Welcome to Catnapin's
Pennsylvanian Fossil Gallery - Brachiopod
Brachiopoda, Articulata, Strophomenida
(Phylum, Class, Order)
Red text = needs information
Fossil identification by Jo Cox unless otherwise noted
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Chonetidae
(Family)
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Chonetinella verneuiliana Period: Pennsylvanian Location: near Gunsight Texas Collection: Jo Cox Size: 16 mm hinge (left) |
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Description: convexi-concave --- deep sulcus on the pedicle valve, fold on brachial valve, even or widest at hinge, hinge has 4 spines |
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Mesolobus decipiens Period: Pennsylvanian Location: ? (near Moran, Texas) Collection: Hardin-Simmons University Size: 14 mm hinge |
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Description: convexi-concave --- double sulcus on the pedicle valve |
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Neochonetes sp. (? puebloensis) Period: Pennsylvanian Location: between Cisco & Moran, Texas Collection: Jo Cox Size: 27 mm hinge |
2 specimens |
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Description: convexi-concave, fine radial ribs, fine growth rings --- widest at hinge, shape wider than long -- spine bumps on pedicle valve hinge line |
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Linoproductidae
(Family)
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Linoproductus prattenianus Period: Pennsylvanian Location: ? (north of Cisco, Texas) Collection: Hardin-Simmons University Size: 35 mm hinge |
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Description: convexi-concave, fine radial ribs --- pedicle valve covered with evenly spaced spines --- ears have prominent spine attachments |
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Marginiferidae
(Family)
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Kozlowskia splendens Period: Pennsylvanian Location: near Moran, Texas Collection: Hardin-Simmons University Size: 21 mm hinge |
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Description: convexi-concave, smooth surface --- deep narrow sulcus on the tall pedicle valve with one spine attachment on each lobe, this specimen no longer has wings so hinge is narrower than width --- brachial valve fold is at the lamellose anterior margin only |
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Orthotetidae
(Family)
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Derbyia crassa Period: Pennsylvanian - Permian Location: ? Collection: Hardin-Simmons University Size: 36 mm wide |
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Description: both valves almost flat convex, fine even radial ribs --- growth rings --- hinge nearly as wide as valve |
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Derbyia jacksboroensis Period: Pennsylvanian - Permian Location: ? Collection: Hardin-Simmons University Size: 74 mm wide, 83 mm wide |
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Description: both valves almost flat convex, fine even radial ribs --- growth rings --- hinge nearly as wide as valve |
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