| shell | common name | size | date found | finder | location |
| PHYLUM MOLLUSCA | |||||
| Class: Polyplacophora | |||||
| ISCHNOCHITONIDAE (Chitons) | |||||
| Ischnochiton papillosus | Mesh-Pitted Chiton | 12.1 mm | 07/15/01 | R.Davenport | Port O'Conner |
| Unknown chiton | 8.8 mm | 01/01/00 | J.Nill | S. Padre Is. | |
| Class: Gastropoda | |||||
| FISSURELLOIDEA | |||||
| FISSURELLIDAE (Limpets) | |||||
| Diodora cayenensis | Keyhole Limpet | 31.0 mm | 03/01/83 | J.Nill | S. Padre Is. |
| Fissurella rosea | Rosy Keyhole Limpet | 31.7 mm | 12/20/00 | R.Davenport | S. Padre Is. |
| Lucapinella limatula | File Fleshy Limpet | 14.6 mm | 01/01/00 | J.Nill | S. Padre Is. |
| TROCHIDAE | |||||
| TROCHIDAE (Top Shells) | |||||
| Calliostoma euglyptum | Sculptured Top-shell | 14.9 mm | 12/30/01 | D.Harris | S. Padre Is. |
| TRICOLIIDAE (Pheasant Shells) | |||||
| Tricolia affinis cruenta | Checkered Pheasant | 6.4 mm | 12/01/96 | B.Bickham | Port Isabel |
| NERITOIDEA | |||||
| NERITIDAE (Nerites) | |||||
| Smaragdia viridis | Emerald Nerite | 7.1 mm | 12/29/00 | J.Nill | Clark Is. |
| Nerita fulgurans | Antillean Nerite | 34.7 mm | 01/01/97 | R.Neuffer | S. Padre Is. |
| Nerita versicolor | Four-Tooth Nerite | 22.7 mm | 07/01/96 | D.Harris | S. Padre Is. |
| Neritina virginea | Virgin Nerite | 14.3 mm | 01/01/88 | L.Crnkovic | L.Madre-Corpus |
| Neritina reclivata | Olive Nerite | 16.4 mm | 04/01/94 | R.Davenport | Carancahua Bay |
| LITTORINOIDEA | |||||
| LITTORINIDAE (Periwinkles) | |||||
| Littorina lineolata | Zebra Periwinkle | 20.6 mm | 07/01/94 | R.Davenport | Corpus Christi Bay |
| Littorina nebulosa | Cloudy Periwinkle | 23.5 mm | 11/01/88 | H.White | Port O'Connor |
| Littorina angulifera | Angulate Periwinkle | 27.5 mm | 05/01/87 | H.White | Port O'Connor |
| Littorina irrorata | Marsh Periwinkle | 29.9 mm | 01/01/94 | D.Harris | W. Galv. Bay |
| Littorina meleagris | 5.4 mm | 11/01/99 | J.Nill | S. Padre Is. | |
| HYDROBIIDAE | |||||
| Texadina barretti | 3.3 mm | 07/15/01 | R. Davenport | Seadrift | |
| Texadina sphinctostoma | Small Mouthed Hydrobid | 2.8 mm | 09/11/00 | R. Davenport | Seadrift |
| RISSOIDEA | |||||
| TRUNCATELLIDAE | |||||
| Truncatella caribaeensis | Caribbean Truncatella | 6.6 mm | 01/01/94 | B.Bickham | Port Aransas |
| ASSIMINEIDAE | |||||
| Assiminea succinea | Atlantic Assiminea | 3.0 mm | 04/01/81 | M.Tate | Port O'Connor |
| CAECIDAE | |||||
| Caecum pulchellum | Beautiful Little Caecum | 2.0 mm | 03/01/82 | J.Nill | Corpus Christi |
| 2.0 mm | 01/01/97 | B.Bickham | S. Padre Is. | ||
| Caecum ryssotitum | Minute Caecum | 1.8 mm | 01/11/01 | R.Davenport | S. Padre Is. |
| CERITHIOIDEA | |||||
| CERITHIDAE (Ceriths) | |||||
| Cerithium lutosum | Muddy Cerith | 21.7 mm | 01/01/87 | L.Crnkovic | Port Aransas |
| Cerithium species | 41.6 mm | 08/13/01 | R.Davenport | S. Padre Is. | |
| Alaba incorta | 7.9 mm | 01/18/02 | R.Davenport | S. Padre Is. | |
| Alaba inCerta | Uncertain Miniature Cerith | 5.2 mm | 01/01/97 | B.Bickham | S. Padre Is. |
| LITIOPIDAE | |||||
| Litiopa melanostoma | Brown Sargassum Snail | 6.0 mm | 04/01/81 | H.White | Port Aransas |
| DIASTOMATIDAE | |||||
| Diastoma varium | Variable Bittium | 5.0 mm | 03/01/82 | J.Nill | Corpus Christi |
| POTAMIDIDAE | |||||
| Cerithidea pliculosa | Plicate Horn Shell | 33.2 mm | 03/01/99 | R.Davenport | Point Comfort |
| VERMETIDAE | |||||
| Serpulorbis decussatus | Decussate Worm Shell | 130.0 mm | 06/01/88 | B.Woodard | Surfside Beach |
| STROMBOIDEA | |||||
| STROMBIDAE (Conchs) | |||||
| Strombus alatus | Fighting Conch | 90.0 mm | 10/01/81 | H.White | Port Aransas |
| CREPIDULOIDEA | |||||
| CREPIDULIDAE (Slippers) | |||||
| Crepidula fornicata | Common Atlantic Slipper Shell | 49.0 mm | 12/01/83 | J.Nill | S. Padre Is. |
| Crepidula convexa | Faded Slipper Shell | 15.0 mm | 03/01/82 | J.Nill | Corpus Christi |
| Crepidula plana | Eastern White Slipper Shell | 42.5 mm | 01/01/88 | D.Harris | Surfside Beach |
| CYPRAEOIDEA | |||||
| OVULIDAE (Egg Shells) | |||||
| Cyphoma mcgintyi | McGinty's Cyphoma | 34.0 mm | 05/01/85 | J.Nill | S. Padre Is. |
| Simnialena marferula | Sea Whip Simnia | 18.9 mm | 03/01/99 | R.Davenport | St. Joseph Is. |
| Simnialena uniplicata | Single-toothed Simnia | 13.8 mm | 12/15/00 | R.Davenport | S. Padre Is. |
| NATICOIDEA | |||||
| NATICIDAE (Moon Shells) | |||||
| Polinices duplicatus | Shark's Eye | 75.8 mm | 03/01/93 | B.Bickham | Surfside Beach |
| Sinum perspectivum | Common Baby's Ear | 34.6 mm | 01/01/97 | R.Davenport | S. Padre Is. |
| Natica pusilla | Miniature Natica | 5.2 mm | 01/01/97 | B.Bickham | S. Padre Is. |
| TONNOIDEA | |||||
| CASSIDAE (Helmets) | |||||
| Phalium granulatum | Scotch Bonnet | 72.0 mm | 01/01/84 | B.Sanchez | St. Joseph Is. |
| TONNIDAE (Tun Shells) | |||||
| Tonna galea | Giant Tun Shell | 134.0 mm | 09/01/86 | J.Nill | Boca Chica |
| Tonna maculosa | Partridge Tun | 67.2 mm | 01/01/01 | R.Davenport | Clark Island |
| RANELLIDAE (Tritons) | |||||
| Cymatium muricinum | Knobbed Triton | 48.5 mm | 1/26/2002 | R.Davenport | S. Padre Is. |
| Cymatium nicobaricum | Gold-Mouthed Triton | 46.6 mm | 11/01/95 | J.Nill | S. Padre Is. |
| Cymatium pileare | Atlantic Hairy Triton | 48.7 mm | 01/03/03 | R.Davenport | South Padre Island |
| Cymatium parthenopeum | 30.0 mm | 12/06/02 | R.Davenport | South Padre Island | |
| CERITHIOPSIDAE | |||||
| Seila adamsi | Adams' Miniature Cerith | 10.6 mm | 01/12/02 | L.Crynkovic | Port Isabel |
| Cerithiopsis greeni | Greens' Miniature Cerith | 4.4 mm | 01/01/97 | B.Bickham | S. Padre Is. |
| TRIPHOROIDEA | |||||
| TRIPHORIDAE | |||||
| Triphora nigrocincta | Black-Lined Triphora | 5.2 mm | 12/21/02 | R.Davenport | South Bay Channel |
| EPITONIIDAE (Wentletraps) | |||||
| Amaea mitchelli | Mitchell's Wentletrap | 50.0 mm | 01/01/84 | B.Sanchez | Quintana Beach |
| Epitonium tollini | Tollin's Wentletrap | 9.0 mm | 05/01/81 | B.Bickham | Quintana Beach |
| Epitonium humphreysi | Humphrey's Wentletrap | 16.0 mm | 02/01/88 | B.Bickham | Christmas Bay |
| Epitonium angulatum | Angulate Wentletrap | 31.5 mm | 04/01/93 | B.Bickham | Quintana Beach |
| Epitonium apiculatum | Dall's Wentletrap | 11.9 mm | 01/01/98 | J.Nill | S. Padre Is. |
| Epitonium multistriatum | Multi-ribbed Wentletrap | 9.5 mm | 03/01/93 | B.Bickham | San Luis Pass, G. |
| Epitonium albidum | White Wentletrap | 13.0 mm | 05/01/81 | B.Bickham | Bryan Beach |
| Epitonium rupicola | Brown-Banded Wentletrap | 18.0 mm | 02/01/80 | O.Vordeman | Surfside Beach |
| Epitonium novangliae | New England Wentletrap | 10.8 mm | 01/01/01 | R.Davenport | Clark Island |
| JANTHINIDAE (Snails) | |||||
| Janthina janthina | Common Purple Sea Snail | 32.0 mm | 05/01/83 | P.Brockman | Surfside Beach |
| Janthina globosa | Elongate Janthina | 25.0 mm | 04/01/81 | O.Vordeman | Surfside Beach |
| Janthina exigua | Dwarf Purple Sea Snail | 11.0 mm | 04/01/81 | B.Echart | Surfside Beach |
| EULIMOIDEA | |||||
| EULIMIDAE | |||||
| Melanella arcuata | 2.0 mm | 01/11/01 | R.Davenport | S. Padre Is. | |
| Melanella conoidea | Conoidal Melanella | 5.0 mm | 08/15/01 | R.Davenport | S. Padre Is. |
| Melanella jamaicensis | Jamaica Melanella | 11.5 mm | 1/26/2002 | R.Davenport | S. Padre Is. |
| MURICOIDEA | |||||
| MURICIDAE (Murex) | |||||
| Phyllonotus pomum | Apple Murex | 46.0 mm | 12/01/83 | J.Nill | S. Padre Is. |
| Hexaplex fulvescens | Giant Eastern Murex | 178.0 mm | 02/01/79 | W.Lindveit | Christmas Bay |
| Thais haemastoma canaliculata | Hays' Rock Shell | 101.5 mm | 06/09/05 | H.White | Christmas Bay |
| Thais rustica | Rustic Rock Shell | 33.0 mm | 02/01/96 | R.Davenport | S.Padre,near jetty |
| Morula nodulosa | Blackberry Drupe | 18.2 mm | 01/01/96 | J.Nill | S. Padre Is. |
| COLUMBELLIDAE (Dove Shells) | |||||
| Anachis semiplicata | Semiplicate Dove-shell | 14.0 mm | 03/01/82 | F.White | L.Madre-Corpus |
| Anachis obesa | Fat Dove-shell | 5.0 mm | 06/01/80 | S.Varner | Quintana Beach |
| Anachis ostreicola | Ostreicola Dove-shell | 4.5 mm | 01/01/97 | B.Bickham | S. Padre Is. |
| Anachis sp.? | ? Dove-shell | 12.5 mm | 01/01/97 | B.Bickham | S. Padre Is. |
| Anachis sparsa | Sparse Dove-shell | 8.4 mm | 01/11/01 | R.Davenport | S. Padre Is. |
| Mitrella lunata | Lunar Dove-shell | 4.5 mm | 01/01/97 | B.Bickham | S. Padre Is. |
| Anachis floridana | Florida Dove-shell | 12.5 mm | 11/01/95 | R.Davenport | S. Padre Is. |
| Suturoglypta iontha | Ravenel's Pyrene | 6.2 mm | 01/01/97 | B.Bickham | S. Padre Is. |
| Mitrella multitineata | 3.4 mm | 06/06/02 | R.Davenport | South Padre Island | |
| BUCCINIDAE | |||||
| Pisania tincta | Tinted Cantharus | 34.0 mm | 02/01/96 | R.Davenport | S.Padre,near jetty |
| Cantharus cancellarius | Cancellate Cantharus | 35.3 mm | 10/01/98 | R.Mundorff | Follets Beach |
| MELONGENIDAE (Busycon Whelks) | |||||
| Busycon perversum pulleyi | Lightning Whelk | 270.0 mm | 03/01/84 | J.Nill | S. Padre Is. |
| Busycon spiratum plagosum | Pear Whelk | 127.0 mm | 03/01/88 | R.Savage | W. Galv. Bay |
| NASSARRIIDAE (Nassa Mud Snails) | |||||
| Nassarius albus | Variable Nassa | 14.3 mm | 06/30/01 | R.Davenport | S. Padre Is. |
| Nassarius vibex | Common Eastern Nassa | 16.9 mm | 02/01/96 | R.Davenport | Port Isabel |
| Nassarius acutus | Sharp-Knobbed Nassa | 11.6 mm | 01/27/01 | L.Crynkovic | San Luis Pass |
| Nassarius polygonatus | 17.2 mm | 11/01/99 | J.Nill | Port Isabel,n.shore | |
| FASCIOLARIIDAE (Tulip/Spindle) | |||||
| Fasciolaria lilium lilium | Banded Tulip Shell | 118.0 mm | 11/01/96 | J.Nill | Port Isabel |
| Pleuroploca gigantea | Florida Horse Conch | 372.6 mm | 01/09/05 | J. Nill | S. Padre Is. |
| OLIVIDAE (Olives) | |||||
| Oliva sayana | Lettered Olive | 76.2 mm | 12/29/00 | R.Davenport | Clark Is. |
| Olivella minuta | Minute Dwarf Olive | 13.3 mm | 07/01/00 | R.Davenport | Clark Is. |
| Olivella dealbata | Whitened Dwarf Olive | 10.1 mm | 01/13/02 | L.Crynkovic | Clark Is. |
| Olivella pusilla | 8.1 mm | 11/01/95 | B.Bickham | Port Aransas | |
| Olivella verreauxii | 9.6 mm | 12/18/2001 | |||
| Olivella adelae | 10.5 mm | 01/27/02 | R.Davenport | Clark Island | |
| Olivella sp. | 10.0 mm | 01/27/02 | R.Davenport | Clark Island | |
| CANCELLAIIDAE (Nutmegs) | |||||
| Cancellaria reticulata | Common Nutmeg | 44.4 mm | 12/29/00 | R.Davenport | Clark Is. |
| CONOIDEA | |||||
| CONIDAE (Cones) | |||||
| Conus cancellatus | 48.8 mm | 08/01/98 | D. Harris | San Luis Pass | |
| TEREBRIDAE (Augers) | |||||
| Terebra dislocata | Common Atlantic Auger | 44.5 mm | 01/27/01 | J.Nill | San Luis Pass |
| Hastula salleana | Salle's Auger | 40.5 mm | 06/01/88 | D.Harris | Surfside Beach |
| Hastula maryleeae | Marylee's Terebra | 29.5 mm | 07/01/87 | J.Nill | S. Padre Is. |
| Terebra Species | 6.2 mm | 08/14/01 | R.Davenport | Clark Is. | |
| TURRIDAE (Turrids) | |||||
| Crassispira monilis | 13.8 mm | 07/01/00 | R.Davenport | S. Padre Is. | |
| Cryoturris cerinella | Wax-Colored Mangelia | 9.2 mm | 02/01/88 | B.Bickham | W. Galv. Bay |
| Kurtziella limonitella | Punctate Mangelia | 5.4 mm | 06/01/00 | R.Davenport | S. Padre Is. |
| Kurtziella cerina | 7.1 mm | 01/13/02 | L.Crynkovic | Clark Island | |
| Pyrgocythara coxi (?) | 6.3 mm | 11/01/00 | R.Davenport | S. Padre Is. | |
| Pyrgocythara plicosa | Plicate Mangelia | 7.0 mm | 04/01/83 | B.Bickham | Christmas Bay |
| Turrid species | Unidentified Turrid | 10.2 mm | 01/13/02 | L.Crynkovic | Clark Island |
| ARCHITECTONICOIDEA | |||||
| ARCHITECTONICIDAE (Sundial) | |||||
| Architectonica nobilis | Common Sundial | 43.5 mm | 12/01/88 | J.Brockman | Surfside Beach |
| PYRAMIDELLOIDEA | |||||
| PYRAMIDELLIDAE (Pyram) | |||||
| Pyramidella crenulata | Notched Pyram | 10.0 mm | 01/01/87 | J.Nill | Port Aransas |
| Odostomia impressa | Impressed Odostome | 7.0 mm | 03/01/84 | B.Bickham | Christmas Bay |
| Sayella livida | Dark Pyram | 4.5 mm | 04/01/88 | B.Bickham | W. Galv. Bay |
| Turbonilla crenulata | 4.5 mm | 12/30/00 | R.Davenport | S. Padre Is. | |
| Turbonilla interrupta | Interrupted Turbonilla | 12.0 mm | 02/01/88 | D.Harris | W. Galv. Bay |
| Turbonilla hemphilli | Hemphill's Turbonilla | 8.0 mm | 03/01/84 | B.Bickham | Christmas Bay |
| Turbonilla incisa | 9.7 mm | 01/01/00 | R.Davenport | Stedman Is. | |
| Turbonilla sp? | 4.8 mm | D.Harris | Quintana Beach | ||
| PHILINOIDEA | |||||
| ACTEONIDAE | |||||
| Acteon punctostriatus | Adam's Baby-Bubble | 6.0 mm | 02/01/83 | L.Sipple | Christmas Bay |
| 6.0 mm | 02/01/83 | B.Bickham | Christmas Bay | ||
| SCHAPHANDRIDAE | |||||
| Acteocina canaliculata | Channeled Barrel-Bubble | 6.0 mm | 02/01/88 | D.Harris | W. Galv. Bay |
| Acteocina bidentata | Orbigny's Baby-Bubble | 5.8 mm | 03/01/83 | J.Nill | S. Padre Is. |
| BULLIDAE (Bubbles) | |||||
| Bulla striata | Striate Bubble | 26.2 mm | 01/01/00 | J.Nill | S. Padre Is. |
| HAMINOEIDAE (Paper Bubbles) | |||||
| Haminoea antillarum | Elegant Paper-Bubble | 16.4 mm | 01/01/96 | R.Davenport | Flour Bluff |
| Haminoea elegans | 12.9 mm | 11/01/00 | R.Davenport | Harbor Is. | |
| Haminoea succinea | Conrad's Paper-Bubble | 11.2 mm | 04/01/80 | B.Bickham | Christmas Bay |
| APLYSSIOIDEA | |||||
| APLYSSIDAE (Sea Hare) | |||||
| Subclass: Pulmonata | |||||
| Order: Archaeopulmonata | |||||
| Aplysia willcoxi | Willcox's Sea Hare | 44.0 mm | 04/01/82 | J.Nill | S. Padre Is. |
| ELLOBIOIDEA | |||||
| ELLOBIIDAE | |||||
| Melampus bidentatus | Coffee Melampus | 14.0 mm | 01/01/94 | B.Bickham | W. Galv. Bay |
| Pedipes mirabilis | Stepping Shell | 5.0 mm | 02/01/83 | J.Nill | S. Padre Is. |
| Tralia ovula | Egg Melampus | 12.0 mm | 09/01/86 | J.Nill | S. Padre Is. |
| SIPHONARIOIDEA | |||||
| SIPHONARIIDAE (False Limpet) | |||||
| Siphonaria pectiniata | Striped False Limpet | 31.5 mm | 12/01/96 | W.Coker | Port Isabel |
| Class: Schaphopoda | |||||
| DENTALIIDAE | |||||
| DENTALIIDAE (Tusk Shells) | |||||
| Dentalium texasianum | Texas Tusk | 11 mm | 07/13/00 | R.Davenport | Port Isabel |
| Dentalium eboreum | 40.8 mm | 07/20/02 | R.Davenport | Clark Island | |
| Class: Cephalopoda | |||||
| LOLIGINIDAE (Arrow Squids) | |||||
| Loliguncula brevis | Short Squid | 70.0 mm | 01/01/87 | J.Nill | Port Aransas |
| OCTOPODOIDEA | |||||
| OCTOPODIDAE (Octopus) | |||||
| Octopus vulgaris | Common Atlantic Octopus | 28.0 mm | 01/01/97 | B.Bickham | S. Padre Is. |
| Class: Bivalvia | |||||
| NUCULANOIDEA | |||||
| NUCULANIDAE (Nut Clams) | |||||
| Nuculana acuta | Pointed Nut Clam | 6.6 mm | 12/01/96 | J.Nill | Port Isabel |
| ARCOIDEA | |||||
| ARCIDAE (Arks) | |||||
| Arca imbricata | Mossy Ark | 46.5 mm | 01/01/96 | J.Nill | S. Padre Is. |
| Arca zebra | Turkey Wing | 43.0 mm | 01/04/03 | R.Davenport | Clark Island |
| Anadara chemintzii | Cheminitz's Ark | 23.9 mm | 12/30/00 | J.Nill | Clark Is. |
| Anadara transversa | Transverse Ark | 28.0 mm | 03/01/84 | B.Bickham | Corpus Christi |
| Anadara floridana | Cut-Ribbed Ark | 94.0 mm | 12/01/83 | J.Nill | S. Padre Is. |
| Anadara ovalis | Blood Ark | 54.9 mm | 01/01/96 | B.Bickham | San Luis Pass Beach |
| Anadara brasiliana | Incongruous Ark | 60.2 mm | 06/12/05 | D.Harris | Surfside Beach |
| Anadara brasiliana | Incongruous Ark | 60.2 mm | 11/01/95 | H.White | Surfside Beach |
| Noetia ponderosa | Ponderous Ark | 60.6 mm | 01/01/98 | J.Nill | S. Padre Is. |
| Barbatia cancellaria | Red Brown Ark | 15.0 mm | 05/01/92 | B.Bickham | Follet's Beach |
| Barbatia domingensis | White Miniature Ark | 21.9 mm | 12/01/97 | R.Davenport | S. Padre Is. |
| Barbatia candida | White Bearded Ark | 47.4 mm | 01/01/97 | R.Davenport | S. Padre Is. |
| Barbatia tenera | Doc Bales' Ark | 13.3 mm | 12/01/94 | B.Bickham | S. Padre Is. |
| Arcopsis adamsi | Adams' Miniature Ark | 11.3 mm | 12/01/94 | B.Bickham | S. Padre Is. |
| MYTILOIDEA | |||||
| MYTILIDAE (Sea Mussels) | |||||
| Brachidontes exustus | Scorched Mussel | 22.0 mm | 02/01/83 | F.White | L.Madre-Corpus |
| Brachidontes domingensis | Domingo Mussel | 20.0 mm | 03/01/82 | J.Nill | Surfside Jetty |
| Ischadium recurvum | Hooked Mussel | 62.4 mm | 01/01/85 | H.White | Christmas Bay |
| Lioberus castaneus | Say's Chestnut Mussel | 18.0 mm | 03/01/83 | J.Nill | S. Padre Is. |
| Lithophaga bisulcata | Mahogany Date Mussel | 32.0 mm | 04/01/82 | L.Washburn | St.Joseph Is. |
| Lithophaga aristata | Scissor Date Mussel | 41.6 mm | 01/01/98 | J.Nill | S. Padre Is. |
| Modiolus americanus | Tulip Mussel | 74.2 mm | 01/01/97 | B.Bickham | S. Padre Is. |
| Amydgalum papyrium | Paper Mussel | 39.5 mm | 01/01/88 | L.Crnkovic | L.Madre-Corpus |
| Geukensia demissa granosissima | Ribbed Mussel | 118.2 mm | 02/01/95 | R.Davenport | Christmas Bay |
| Musculus lateralis | Lateral Musculus | 12.0 mm | 07/01/91 | B.Bickham | Follett's Beach |
| Modiolus modiolus squamosus | False Tulip Mussel | 20.4 mm | 07/01/91 | B.Bickham | Follett's Beach |
| Perna perna | Perna Mussel | 107.2 mm | 11/01/95 | R.Davenport | Port Isabel |
| PTERIOIDEA | |||||
| PTERIIDAE (Pearl Oyster) | |||||
| Pteria colymbus | Atlantic Wing Oyster | 80.7 mm | 01/01/97 | D.Harris | Pelican Is. C.C.Bay |
| Pinctada imbricata | Atlantic Pearl Oyster | 73.6 mm | 07/01/97 | G.Vaudagna | Surfside Beach |
| ISOGNOMONIDAE | |||||
| Isognomon alatus | Flat Tree Oyster | 89.6 mm | 01/13/02 | L.Crnkovic | S. Padre Is. |
| Isognomon radiatus | Lister's Tree Oyster | 21.0 mm | 05/01/88 | B.Bickham | Follett's Is. |
| Isognomon bicolor | Two-Toned Tree Oyster | 34.4 mm | 12/01/94 | J.Nill | S. Padre Is. |
| PINNOIDEA | |||||
| PINNIDAE (Pen Shells) | |||||
| Pinna carnea | Amber Pen Shell | 119.5 mm | 05/01/88 | B.Bickham | Follett's Is. |
| Atrina rigida | Stiff Pen Shell | 166.0 mm | 02/01/82 | H.White | S. Padre Is. |
| Atrina seminuda | Half-Naked Pen Shell | 244.0 mm | 03/01/83 | J.Nill | S. Padre Is. |
| Atrina serrata | Saw-Tooth Pen Shell | 287.0 mm | 07/01/85 | J.Nill | Corpus Christi |
| LIMOIDEA | |||||
| LIMIDAE (File Clams) | |||||
| Lima pellucida | Antillean Lima | 22.5 mm | 12/01/94 | D.Harris | S. Padre Is. |
| Lima lima | Spiny Lima | 24.5 mm | 09/01/94 | K.Dryman | Follett's Beach |
| OSTREOIDEA | |||||
| OSTREIDAE (True Oysters) | |||||
| Ostrea equestris | Horse or Crested Oyster | 31.0 mm | 12/01/83 | B.Bickham | Corpus Christi |
| Crassostrea virginica | Eastern Oyster | 201.0 mm | 03/01/83 | J.Nill | Matagorda Bay |
| Crassostrea rhizophorae | Rhizophorae Oyster | 70.5 mm | 05/01/88 | D.Harris | Port Aransas |
| Lopha frons | Frons or 'coon Oyster | 53.5 mm | 06/01/88 | D.Harris | Surfside Beach |
| Neopycnodonte cochlear | Poli's Oyster | 39.6 mm | 03/01/93 | D.Harris | Surfside Beach |
| PECTINOIDEA | |||||
| PECTINIDAE (Scallops) | |||||
| Aequipecten muscosus | Rough Scallop | 27.2 mm | 12/14/00 | R.Davenport | S.Padre Is. |
| Argopecten irradians amplicostatus | Atlantic Bay Scallop | 80.0 mm | 01/01/88 | L.Crnkovic | L.Madre-Corpus |
| Argopecten gibbus | Calico Scallop | 24.0 mm | 05/01/88 | B.Bickham | Follett's Is. |
| ?Lyropecten antillarum | Antillean Scallop | 18.0 mm | 05/01/88 | B.Bickham | San Luis Pass |
| Amusium papyraceum | Paper Scallop | 47.0 mm | 03/01/90 | M.Jones | Quintana Beach |
| SPONDYLIDAE (Thorny Oyster) | |||||
| Spondylus americanus | Atlantic Thorny Oyster | 50.9 mm | 12/07/02 | R.Davenport | Clark Island |
| ANOMIOIDEA | |||||
| ANOMIIDAE (Jingle) | |||||
| Anomia simplex | Common Jingle Shell | 35.4 mm | 01/01/96 | J.Nill | S. Padre Is. |
| LUCINOIDEA | |||||
| LUCINIDAE (Lucines) | |||||
| Linga amiantus | 7.4 mm | 07/01/99 | R.Davenport | S. Padre Is. | |
| Lucina pectinata | Thick Lucina | 52.0 mm | 03/01/80 | M.Tate | Christmas Bay |
| Parvilucina crenella | Many-lined Lucina | 5.8 mm | 01/28/02 | R.Davenport | S. Padre Is. |
| UNGULINIDAE (Diplodon Clams) | |||||
| Diplodonta semiaspera | 14.8 mm | 01/01/98 | J.Nill | S. Padre Is. | |
| Diplodonta soror | Soror Diplodon | 17.0 mm | 12/01/81 | D.Hazlett | Surfside Beach |
| CHAMOIDEA | |||||
| CHAMIDAE (Jewel Box) | |||||
| Chama congregata | Little Corrugated Jewel Box | 31.0 mm | 08/01/83 | J.Nill | S. Padre Is. |
| Chama macerophylla | Leafy Jewell Box | 62.5 mm | 09/01/89 | M.Jones | Quintana Beach |
| LEPTONIDAE | |||||
| Lepton lepidum | 4.3 mm | 12/4/2001 | R.Davenport | Galveston | |
| CRASSATELLOIDEA | |||||
| CRASSATELLIDAE | |||||
| Crassinella lunulata | Lunate Crasinella | 7.2 mm | 06/30/01 | R.Davenport | S.Padre Is. |
| CARDIOIDEA | |||||
| CARDIIDAE (Cockles) | |||||
| Trachycardium isocardia | Prickley Cockle | 68.4 mm | 01/09/05 | J. Nill | S. Padre Is. |
| Trachycardium muricatum | Yellow Cockle | 50.0 mm | 04/01/88 | B.Bickham | Christmas Bay |
| Laevicardium mortoni | Morton's Egg Cockle | 22.0 mm | 01/01/88 | M.Rogers | L.Madre-Corpus |
| Laevicardium pictum | Ravenel's Egg Cockle | 16 mm | 06/17/01 | R.Davenport | S. Padre Is. |
| Dinocardium robustum vanhyningi | Giant Atlantic Cockle | 118.6 mm | 01/01/96 | H.Murphy | W.Galveston Bay |
| Laevicardium laevigatum | Common Egg Cockle | 43.6 mm | 01/01/97 | R.Davenport | S. Padre Is. |
| MACTROIDEA | |||||
| MACTRIDAE (Mactra Clams) | |||||
| Mactra fragilis | Fragile Atlantic Mactra | 49.0 mm | 05/01/82 | J.Nill | Corpus Christi |
| Spisula solidissima similis | Atlantic Surf Clam | 113.0mm | 06/01/88 | B.Woodard | San Luis Pass |
| Mulinia lateralis | Dwarf Surf Clam | 18.0 mm | 12/01/81 | S.Varner | Quintana Beach |
| Rangia cuneata | Common Rangia | 78.0 mm | 07/01/80 | R.Runnels | 332 Levee Rd. |
| Rangia flexuosa | Brown Rangia | 55.0 mm | 03/01/84 | H.White | 332 Levee Rd. |
| Anatina anatina | Smooth Duck Clam | 58.0 mm | 12/01/81 | J.Nill | Surfside Beach |
| 58.0 mm | 01/01/97 | R.Davenport | S. Padre Is. | ||
| Raeta plicatella | Channeled Duck Clam | 76.3 mm | 01/01/96 | B.Bickham | Bryan Beach |
| MESODESMATIDAE | |||||
| Ervilia concentrica | Concentric Ervilia | 2.3 mm | 08/14/01 | R.Davenport | Clark Is. |
| SOLENOIDEA | |||||
| SOLENIDAE (Razor/Jackknife Clam) | |||||
| Solen viridis | Green Jackknife Clam | 31.5 mm | 12/01/87 | B.Bickham | S. Padre Is. |
| CULTELLIDAE | |||||
| Ensis minor | Jackknife Clam | 82.8 mm | 06/13/05 | B.Bickham | Bolivar |
| TELLINOIDEA | |||||
| TELLINIDAE (Tellins/Macomas) | |||||
| Tellina alternata | Alternate Tellin | 65.9 mm | 12/01/96 | H.White | Quintana Beach |
| Tellina alternata tayloriana | Taylor's Tellin | 63.0 mm | 12/01/81 | L.Washburn | Bryan Beach |
| Tellina nitens | Dwarf Shiny Tellin | 19.0 mm | 01/01/00 | J.Nill | S. Padre Is. |
| Tellina texana | Say's Tellin | 14.0 mm | 04/01/88 | H.White | L.Madre-Corpus |
| Tellina versicolor | DeKay's Dwarf Tellin | 11.0 mm | 12/01/81 | J.Nill | Surfside Beach |
| Tellina iris | Iris Tellin | 15.0 mm | 01/01/83 | S.Mundorff | San Luis Pass |
| 15.0 mm | 01/01/83 | B.Bickham | San Luis Pass | ||
| Tellina tampaensis | Tampa Tellin | 16.0 mm | 12/01/87 | B.Bickham | L.Madre-Corpus |
| Tellidora cristata | White Crested Tellin | 32.0 mm | 02/01/88 | B.Bickham | W. Galv. Bay |
| Macoma tenta | Tenta Macoma | 21.0 mm | 12/01/81 | B.Bickham | Surfside Beach |
| Macoma mitchelli | Mitchell's Macoma | 23.0 mm | 07/01/80 | R.Runnels | 332 Levee Rd. |
| Macoma constricta | Constricted Macoma | 44.0 mm | 04/01/96 | R.Davenport | Texas City dike |
| DONACIDAE (Wedge Clams) | |||||
| Donax variabilis | Coquina Shell | 26.0 mm | 12/01/81 | H.White | Surfside Beach |
| Donax texasianus | Fat Gulf Donax | R.Davenport | San Luis Pass (Galv.) | ||
| SEMELIDAE (Semele Clams) | |||||
| Semele proficua | White Atlantic Semele | 30.8 mm | 12/28/00 | J.Nill | Port Isabel |
| Semele bellastriata | Cancellate Semele | 17.0 mm | 01/01/00 | J.Nill | Port Isabel,n.shore |
| Abra aequalis | Common Atlantic Abra | 14.0 mm | 12/01/81 | D.Hazlett | Quintana Beach |
| Cumingia tellinoides | Tellin-Like Cumingia | 17.0 mm | 01/01/88 | L.Crnkovic | L.Madre-Corpus |
| PSAMMOBIIDAE (False Razor Clam) | |||||
| Tagelus plebeius | Stout Tagelus | 76.0 mm | 01/01/97 | S.McKey | Mouth of Brazos |
| Tagelus divisus | Purplish Tagelus | 28.0 mm | 03/01/84 | B.Bickham | Corpus Christi |
| DREISSENOIDEA | |||||
| DREISSENIDAE (False Mussels) | |||||
| Mytilopsis leucophaeta | Conrad's False Mussel | 18.0 mm | 04/01/81 | S. Varner | Freeport Levee |
| CORBICULOIDEA | |||||
| Marsh Clams | |||||
| Polymesoda caroliniana | Carolina Marsh Clam | 34.0 mm | 08/01/80 | S.Mundorff | Point Bolivar |
| Polymesoda maritima | Florida Marsh Clam | 26.0 mm | 02/01/82 | H.White | L. Madre, Corpus |
| VENERIDAE (Clams) | |||||
| Mercenaria mercenaria texana | Texas Quahog | 148.5 mm | 03/01/88 | B.Bickham | W. Galv. Bay |
| Chione cancellata | Crossed-Barred Venus | 42.0 mm | 03/01/84 | J.Nill | Corpus Christi |
| Chione clenchi | Clench's Venus | 19.0 mm | 12/28/01 | J.Nill | Port Isabel, n.shore |
| Chione grus | Gray Pygmy Venus | 10.0 mm | 11/01/00 | R.Davenport | S. Padre Is. |
| Chione intapurpurea | Lady-in-waiting Venus | 28.9 mm | 06/01/97 | R.Davenport | S. Padre Is. |
| Chione pygmaea | White Pygmy Venus | 7.0 mm | 07/01/91 | B.Bickham | Follett's Beach |
| Anomalocardia auberiana | Pointed Venus | 17.0 mm | 01/01/88 | L.Crnkovic | L.Madre-Corpus |
| Agriopoma texasiana | Texas Venus | 48.0 mm | 08/01/80 | S.Mundorff | Crystal Beach |
| Dosinia elegans | Elegant Dosinia | 39.0 mm | 01/14/02 | L.Crnkovic | S. Padre Is. |
| Dosinia discus | Disk Dosinia | 86.0 mm | 03/01/88 | D.Harris | W. Galv. Bay |
| Cyclinella tenuis | Atlantic Cyclinella | 30.3 mm | 01/01/97 | R.Davenport | S. Padre Is. |
| Gemma gemma | Amethyst Gem Clam | 3.5 mm | 03/01/98 | R.Davenport | Stedman Is. |
| Gouldia cerina | Serene Gould Clam | 7.4 mm | 07/01/00 | R.Davenport | Port Isabel |
| Parastarte triquetra | Brown Gem Clam | 3.8 mm | 03/01/99 | R.Davenport | Stedman Is. |
| Pitar cordatus | Schwengel's Venus | 20.3 mm | 01/01/97 | R.Davenport | S. Padre Is. |
| PETRICOLIDAE (False Angel Wing) | |||||
| Petricola pholadiformis | False Angel Wing | 42.7 mm | 03/01/93 | J.Nill | Quintana Beach |
| Rupellaria sp.? | Unidentified Rupellaria | 9.7 mm | 03/01/93 | B.Bickham | Port Aransas |
| Rupellaria typica | Atlantic Rupellaria | 25.0 mm | 01/01/96 | J.Nill | S. Padre Is. |
| MYIDAE (Soft-shell Clam) | |||||
| Paramya subovata | Subovate Paramya | 11.0 mm | 02/01/84 | B.Bickham | Christmas Bay |
| Sphenia antillensis | Antillean Sphenia | 12.0 mm | 03/01/93 | B.Bickham | Quintana Beach |
| CORBULIDAE | |||||
| Corbula contracta | Contracted Corbula | 7.1 mm | 08/14/01 | R.Davenport | Clark Is. |
| Corbula dietziana | 4.8 mm | 11/01/00 | R.Davenport | Port Isabel | |
| Corbula swiftiana | Swift's Corbula | 8.5 mm | 12/18/01 | R.Davenport | S. Padre Is. |
| Corbula sp.? | Unidentified Corbula | 5.3 mm | 12/01/96 | D.Harris | Port Isabel |
| HIATELLOIDEA | |||||
| HIATELLIDAE | |||||
| Panopea bitruncata | Atlantic Geoduck | 133.0 mm | 01/01/83 | J.Nill | S. Padre Is. |
| Hiatella arctica | Arctic Saxicave | 7.5 mm | 08/01/88 | B.Bickham | Surfside Beach |
| Hiatella striata | Striate Saxicave | 7.5 mm | 07/01/91 | B.Bickham | Follett's Beach |
| PHOLADOIDEA | |||||
| PHOLADIDAE (Angel Wing/Martesia) | |||||
| Barnea truncata | Fallen Angel Wing | 37.4 mm | 03/01/93 | J.Nill | Quintana Beach |
| Cyrtopleura costata | Angel Wing | 135.6 mm | 04/01/83 | B.Sanchez | Christmas Bay |
| Pholas campechiensis | Campeche Angel Wing | 81.7 mm | 03/01/83 | R.Davenport | Port Isabel |
| Martesia fragilis | Fragile Martesia | 36.0 mm | 05/01/80 | B.Bickham | Surfside Beach |
| Martesia cuneiformis | Wedge-Shaped Martesia | 16.0 mm | 01/01/82 | S.Varner | Sargent Beach |
| Diplothyra smithii | Oyster Piddock | 10.0 mm | 10/01/80 | S.Varner | Sargent Beach |
| 10.0 mm | 10/02/80 | B.Bickham (Tie) | |||
| TEREDINIDAE (Shipworms) | |||||
| Teredo bartschi | Bartsch's Shipworm | 7.0 mm | 05/01/88 | B.Bickham | Follett's Is. |
| PANDOROIDEA | |||||
| PERIPLOMATIDAE | |||||
| Periploma margaritaceum | Unequal Spoon Clam | 24.2 mm | 01/01/96 | B.Bickham | Quintana Beach |
| LYONSIIDAE | |||||
| Lyonsia hyalina | Glassy Lyonsia | 15.0 mm | 03/01/84 | B.Bickham | Christmas Bay |
| Lyonsia beana | Pearly Lyonsia | 7.0 mm | 07/01/91 | B.Bickham | Follett's Beach |
| PANDORIDAE | |||||
| Pandora trilineata | Say's Pandora | 19.7 mm | 12/29/00 | J.Nill | Clark Is. |