†Crenispirifer effrenus Cooper and Grant 1976 (lamp shell)
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Rhynchonellata - Spiriferinida - Spiriferellinidae
Full reference: G. A. Cooper and R. E. Grant. 1976. Permian Brachiopods of west Texas, V. Smithsonian Contributions to Paleobiology 24:2609-3159
Belongs to Crenispirifer according to G. A. Cooper and R. E. Grant 1976
Sister taxa: Crenispirifer alpheus, Crenispirifer angulatus, Crenispirifer dzhulfensis, Crenispirifer jubatus, Crenispirifer myllus, Crenispirifer nakamurai, Crenispirifer sagus
Type specimen: USNM 153065f, a shell (Articulated shell)
Ecology: stationary low-level epifaunal suspension feeder
Distribution: found only at USNM732, Guadalupe Pass, Guadalupe Mountains (Permian of Texas)
Specimen images are retrieved through the ePANDDA API.
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