| 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 | 339.7 mm | 03/01/95 | B.Bickham | Corpus Christi Bay |
| 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. |