Ptygmactrum extensum Cooper and Grant 1976 (lamp shell)

Rhynchonellata - Rhynchonellida - Petasmatheridae

Full reference: G. A. Cooper and R. E. Grant. 1976. Permian Brachiopods from West Texas, IV. Smithsonian Contributions to Paleobiology 21:1923-2607

Belongs to Ptygmactrum according to G. A. Cooper and R. E. Grant 1976

Sister taxa: Ptygmactrum acutum, Ptygmactrum angulatum, Ptygmactrum depressum, Ptygmactrum mordicum, Ptygmactrum spiculatum

Type specimen: USNM 148321b, a shell (Articulated shell)

Ecology: stationary epifaunal suspension feeder

Distribution:

• Permian of United States (3: Texas collections)

Total: 3 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.


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