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Ptygmactrum extensum

Rhynchonellata - Rhynchonellida - Petasmatheridae

Taxonomy
Ptygmactrum extensum was named by Cooper and Grant (1976). Its type specimen is USNM 148321b, a shell (Articulated shell), and it is not a trace fossil. It is the type species of Ptygmactrum.

Synonymy list
YearName and author
1976Ptygmactrum extensum Cooper and Grant p. 1942 figs. Pl 505, figs 31-58; pl 520, figs 40-44

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
Lophophorata
PanbrachiopodaCarlson and Cohen 2020
RankNameAuthor
phylumBrachiopodaCuvier 1805
subphylumRhynchonelliformeaWilliams et al. 1996
classRhynchonellataWilliams et al. 1996
orderRhynchonellidaKuhn 1949
superfamilyWellerelloideaLicharew 1956
familyPetasmatheridaeCooper and Grant 1976
genusPtygmactrum
speciesextensum

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Ptygmactrum extensum Cooper and Grant 1976
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Diagnosis
No diagnoses are available