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Mollusca - Gastropods | The Phylum Mollusca is a large and varied invertebrate group within the Animal Kingdom. They are characterized by a soft body with a strong muscular foot and usually (but not always) covered by a shell. The Gastropods (Snails) are a very familiar Class of mollusks as the coiled shelled animals are found throughout the world in a variety of habitats including marine, freshwater and terrestrial. While most gastropods possess a coiled shell, some groups do not possess a shell (slugs) and others have a coiled shell only in the larval stage but retain a simple conical shell in maturity (limpets). Gastropods arose in the Late Cambrian but were not as diverse as the bivalves or brachiopods during the Paleozoic. Following rapid diversification in the Mesozoic, gastropods today represent one of the largest animal groups based on number of species. Like the bivalves and brachiopods, within the Finis the nearly four dozen species of recorded gastropods represent a significant portion of the fauna. As with the other groups, a small portion of the genera make up the most common finds. Amphiscapha, Euphemites, Glabrocingulum, Phymatopleura, Shansiella, Strobeus, Trepospira and Worthenia all can be commonly found. Scroll through images or click to enlarge. Fossils are in alphabetical order by Genus. Collections are from Mike DeBrock (MD), Josh Hanley (JH), Dr. Peter Holterhoff (PH), Mark McKinzie (MM), John McLeod (JM), ), Dr. Ben Neuman (BN), Bob Williams (BW), Sveta Earnest (SE), and Rodney Wise (RW). All scales are shown in millimeters unless otherwise noted. |
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Images | Taxonomy/Stratigraphy/ | Images | Taxonomy/Stratigraphy/ |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Neogastropoda Family: Turridae Genus: Amaurotoma Species: A. humerosum Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Stylommatophora Family: Euomphalidae Genus: Amphiscapha (Euomphalus) Species: A. plummeri Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Euomphalida Family: Euomphalidae Genus: Amphiscapha Species: A. subrugosa Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: RW Note: Formerly known as Straparollus | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Family: Genus: Anomphalus Species: A. cf umbilicatus Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Architaenioglossa Family: Melanopsidae Genus: Baylea Species: B. gurleyi Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Bellerophontidia Family: Bellerophontidae Genus: Bellerophon Species: B. crassus Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: MM |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Bellerophontidia Family: Bellerophontidae Genus: Bellerophon Species: B. laticallis Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: BN | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Murchisoniina Family: Portiockiellidae Genus: Catazona Species: C. nsp Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: BW |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Bellerophontidia Family: Bellerophontidae SubFamily: Knightitinae Genus: Cymatospira Species: C. montifortianus Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: RW, MM Note: Formerly Knightites montfortianus | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Heterostropha Family: Donaldinidae Genus: Donaldina Species: D. robusta Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Family: Genus: Eotrochus Species: E. cf tenuimarginatus Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Family: Genus: Euconospira Species: E. turbiniforma Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Bellerophontida Family: Bellerophontidae Genus: Euphemites Species: E. blaneyanus Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: RW, | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Bellerophontida Family: Bellerophontidae Genus: Euphemities Species: E. vittatus Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: MM |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Euomphalina Family: Euomphalidae Genus: Euomphalus Species: E. subquadratus Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: RW, | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Pleurotomariida SuperFamily: Schizongonioidea Family: Glabrocingulini Genus: Glabrocingulum (Ananias) Species: G. tularosaensis Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: RW |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Pleurotomariida SuperFamily: Schizogonioidea Family: Glabrocingulini Genus: Glabrocingulum (Ananias) Species: G. welleri Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: RW | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Pleurotomariida Superfamily: Schizogonioidea Family: Glabrocingulini Genus: Glabrocingulum Species: G. grayvillense Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: RW |
Kingdom: Animalia Phylum: Mollusca Class: Caenogastropoda Order: Goniasmatida Family: Goniasmatidae Genus: Goniasma Species: G. lasallensis Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: MM. | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Superfamily: Family: Genus: Jedria Species: J. meeki Finis Shale, Graham Formation Jacksboro Cem, Jacksboro, TX Collection: JH |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Murchisoniina Family: Soleniscidae Genus: Leptoptygma Species: L. simplex Finis Shale, Graham Formation Finis Road Cut, TX Collection: BN, photo Allison Reimers | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Caenopastropoda Family: Meekospiridae Genus: Meekospira Species: M. peracuta Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: MM |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Superfamily: Family: Genus: Desc: Neritacea operculum (Form 1) Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Superfamily: Family: Genus: Desc: Neritacea operculum (Form 2) Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Superfamily: Family: Genus: Orthonema Species: O. salteri Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Subclass: Neritimorpha Order: Cyrtoneritida Family: Orthonychiidae Genus: Orthonychia Species: O. parva Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: JH |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Family: Genus: Palaeostylus (Psuedozygopleura) Species: P. belli Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Patellogastropoda Family: Knightitidae Genus: Patellilabia Species: P. sp. Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: MM |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Family: Genus: Peruvispira Species: P. sp. Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Bellerophontida Family: Bellerophontidae Genus: Pharkidontus Species: P. percarinatus Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: MM, RW |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Bellerophontida Family: Bellerophontidae Genus: Pharkidontus Species: P. sp. Large sp.Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: MM | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Murchisoniina Family: Phymatopleuridae Genus: Phymatopleura Species: P. brazoensis Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: MM |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Patellogastropoda Family: Knightitidae Genus: Platyzona Species: P. hespera Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: MM | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Patelogastropoda Superfamily: Family: Knightitidae Genus: Platyzona Species: P. sp. nov. Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: SE |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Zygopleuroidea Family: Pseudozygopleuridae Genus: Pseudozygopleura Species: P. mutabilis Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: SE, MM, RW, | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Bellerophontida Family: Bellerophontidae Subfamily: Knightitinae Genus: Retispira Species: R. tenuilineata Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: MM, RW |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Murchisoniina Family: Portiockiellidae Genus: Shansiella Species: S. beckwithana Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: JH | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Murchisoniina Family: Portiockiellidae Genus: Shansiella Species: S. carbonaria Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: JH, MM |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Murchisoniina Family: Loxonematoidea Genus: Soleniscus Species: S. primigenius Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: RW | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Murchisoniina Family: Loxonematoidea Genus: Soleniscus Species: S. typicus Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: RW |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Murshisoniina Family: Gosseletinidae Genus: Spiroscala Species: S. pagoda Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Mark McKinzie Collection | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Subclass: Orthogastropoda Order: Murchisoniina Superfamily: Loxonematoidea Family: Soleniscidae Genus: Strobeus Species: S. brevis Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: MM |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Subclass: Orthogastropoda Order: Murchisoniina Superfamily: Loxonematoidea Family: Soleniscidae Genus: Strobeus Species: S. paludinaeformis Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: MM | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Subclass: Orthogastropoda Order: Murchisoniina Superfamily: Loxonematoidea Family: Soleniscidae Genus: Strobeus Species: S. sp. New Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: MM |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Subclass: Orthogastropoda Order: Murchisoniina Superfamily: Eotomarioidea Family: Gosseletinidae Genus: Trepospira Species: T. discoidalis Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: MM |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Subclass: Orthogastropoda Order: Murchisoniina Superfamily: Eotomarioidea Family: Gosseletinidae Genus: Trepospira Species: T. illinoisensis Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: MM | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Subclass: Orthogastropoda Order: Murchisoniina Superfamily: Eotomarioidea Family: Gosseletinidae Genus: Trepospira Species: T. sphaerulata Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: MM |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Murchisoniidae Family: Genus: Stegocoelia Species: S. wortheni Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: MM | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Murchisoniina Superfamily: Trochonematoidea Family: Lophospiridae Genus: Worthenia Species: W. tabulata Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: MM |
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