†Ptygmactrum Cooper and Grant 1976 (lamp shell)
Click image to enlarge. Click to access iDigBio record.
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
Parent taxon: Petasmatheridae according to A. Williams et al. 2002
See also Sepkoski 2002
Sister taxa: Elassonia, Iotina, Petasmatherus
Subtaxa: Ptygmactrum acutum Ptygmactrum angulatum Ptygmactrum depressum Ptygmactrum extensum Ptygmactrum mordicum Ptygmactrum spiculatum
Type: Ptygmactrum extensum
Ecology: stationary epifaunal suspension feeder
Distribution:
• Permian of United States (14: Texas collections)
Total: 14 collections including 17 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.