 | Texas Pennsylvanian FossilsDedicated to the Study of Pennsylvanian Fossils, Sponsored by Members of the Dallas Paleontological Society |
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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 grouped taxonomically and ordered phylogenetically as in the Treatise. 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: Bellerophontida 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: Bellerophontida 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: Bellerophontida Family: Bellerophontidae SubFamily: Knightitinae Genus: Cymatospira Species: C. montifortianus Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: BN, RW, MM Note: Formerly Knightites montfortianus | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Bellerophontida Family: Bellerophontidae Genus: Patellilabia Species: P. sp. Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: MM, MD |
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 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: Bellerophontida Family: Euphemitidae 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: Euphemitidae 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. plummeri Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: BN Note: Alternate name combo is Straparollus (Euomphalus) plummeri | 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: BN |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Euomphalina Family: Euomphalidae Genus: Amphiscapha Species: A. subrugosa Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: RW, BN Note: Formerly known as Straparollus | 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: BN, JH |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Uncertain Superfamily: Neritoidea Desc: Neritacea operculum (Form 1) Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Uncertain Superfamily: Neritoidea Desc: Neritacea operculum (Form 2) Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Uncertain Superfamily: Neritoidea Family: Naticopsidae Genus: Jedria Species: J. meeki Finis Shale, Graham Formation Jacksboro Cem, Jacksboro, TX Collection: JH | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Subclass: Neritimorpha Order: Cyrcloneritida Family: Trachyspiridae Genus: Trachydoma Species: T. cf. sayeri Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: BN |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Murchisoniina Family: Eotomariidae Genus: Euconospira Species: E. turbiniforma Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Murshisoniina Family: Eotomariidae Genus: Spiroscala Species: S. pagoda Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: MM |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Murchisoniina Family: Luciellidae Genus: Eotrochus Species: E. cf tenuimarginatus Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Murchisoniina Family: Gosseletinidae Genus: Baylea Species: B. gurleyi Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Murchisoniina Family: Gosseletinidae Genus: Glabrocingulum (Ananias) Species: G. tularosaensis Finis Shale, Graham Formation Lost Creek Cem., Jacksboro, TX Collection: MD |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Murchisoniina Family: Gosseletinidae Genus: Glabrocingulum (Ananias) Species: G. welleri Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: RW | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Murchisoniina Family: Gosseletinidae Genus: Glabrocingulum Species: G. grayvillense Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: RW, MD |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Murchisoniina Family: Gosseletinidae Genus: Peruvispira Species: P. sp. Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Subclass: Orthogastropoda Order: Murchisoniina 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 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 Family: Gosseletinidae Genus: Trepospira Species: T. sphaerulata Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: |
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: BN, MM | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Murchisoniina Family: Phymatopleuridae Genus: Worthenia Species: W. tabulata Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: MM |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Murchisoniina Family: Portlockiellidae Genus: ? Species: ? Finis Shale, Graham Formation Finis, TX Collection: BN | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Murchisoniina Family: Portlockiellidae Genus: Shansiella Species: S. beckwithana Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: MD |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Murchisoniina Family: Portlockiellidae 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: Phymatopleuridae Genus: Catazona Species: C. n. sp. Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: BW |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Subclass: Orthogastropoda Order: Murchisoniina Family: Soleniscidae Genus: Strobeus Species: S. brevis Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: BN, MM | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Subclass: Orthogastropoda Order: Murchisoniina Family: Soleniscidae Genus: Strobeus Species: S. paludinaeformis Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: BN, MM |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Subclass: Orthogastropoda Order: Murchisoniina Family: Soleniscidae Genus: Strobeus Species: S. n. sp. Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: BN | 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: Caenogastropoda Family: Goniasmatidae Genus: Goniasma Species: G. lasallensis Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: BN, MM. | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Caenogastropoda Family: Goniasmatidae Genus: Platyzona Species: P. hespera Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: JH |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Caenogastropoda Family: Goniasmatidae Genus: Platyzona Species: P. sp. nov. Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: SE | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Caenogastropoda Family: Goniasmatidae Genus: Stegocoelia Species: S. wortheni Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: MM |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Caenogastropoda 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: Caenogastropoda Family: Meekospiridae Genus: Girtyspira Species: G. minuata? Finis Shale, Graham Formation Lost Creek Cem., Jacksboro, TX Collection: MD |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Caenogastropoda Family: Orthonematidae Genus: Orthonema Species: O. ascensus? Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: BW | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Caenogastropoda Family: Orthonematidae Genus: Orthonema Species: O. salteri Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: BN |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Uncertain Superfamily: Zygopleuroidea Family: Pseudozygopleuridae Genus: Cyclozyga Species: C. promohumera Finis Shale, Graham Formation TXV-70 Collection: Anderson & Boardman (1989) | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Uncertain Superfamily: Zygopleuroidea Family: Pseudozygopleuridae Genus: Plocezyga Species: P. ornata Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: BW |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Uncertain Superfamily: Zygopleuroidea Family: Pseudozygopleuridae Genus: Pseudozygopleura Species: P. macra Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: BW | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Uncertain Superfamily: 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: Uncertain Superfamily: Zygopleuroidea Family: Pseudozygopleuridae Genus: Pseudozygopleura Species: P. schucherti Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: BN | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Uncertain Superfamily: Zygopleuroidea Family: Pseudozygopleuridae Genus: Pseudozygopleura Species: P. scitula Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: BN |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Uncertain Superfamily: Zygopleuroidea Family: Pseudozygopleuridae Genus: Plocezyga Species: P. ampla? Finis Shale, Graham Formation Lost Creek Cem., Jacksboro, TX Collection: MD | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Zygopleuroidea Family: Pseudozygopleuridae Genus: Palaeostylus (Psuedozygopleura) Species: P. belli Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Heterostropha Family: Donaldinidae Genus: Donaldina Species: D. robusta Finis Shale, Graham Formation Lost Creek Cemetery, Jacksboro, TX Collection: MD | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Heterostropha Family: Donaldinidae Genus: Donaldina Species: D. stevensana Finis Shale, Graham Formation Lost Creek Cemetery, Jacksboro, TX Collection: MD |
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Heterostropha Family: Donaldinidae Genus: Donaldina Species: D. swallowiana Finis Shale, Graham Formation Lost Creek Cemetery, Jacksboro, TX Collection: MD | Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Heterostropha Family: Donaldinidae Genus: Royalella Species: R. quadrolirata Finis Shale, Graham Formation Lost Creek Dam, Jacksboro, TX Collection: BN |
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