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Devonian Fossil Gallery - Brachiopod
Brachiopoda, Articulata, Rhynchonellida
(Phylum, Class, Order)
Red text = needs information
Fossil identification by Jo Cox unless otherwise noted
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Wellerellidae
(Family)
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Pugnax sp. Period: Devonian Stage: Frasnian Formation: Lime Creek Member: Cerro Gordo Location: Bird Hill, north central Iowa Collection: Jo Cox Size: 15 mm tall (left) Identification: Charles Newsom, U. of Iowa |
2 specimens |
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Description: convexi-concave --- Surface is very plain. Pedicle valve has 3 main radial ribs starting mid-valve and 3 minor side ribs. Brachial valve has 3 main radial ribs starting mid-valve, which are not pronounced, and 3 minor side ribs, which only break the edge. Larger specimen is crushed inward on left side of Brachial valve. Shorter specimen's anterior edge has been rubbed off and most of shell is missing. |
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