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Morphology Ecology and taphonomy   Age range and collections

Trigonosemus

Rhynchonellata - Terebratulida - Terebrataliidae

Taxonomy
Trigonosemus is a genus. It is not extant. Its type is Trigonosemus elegans. It is the type genus of Trigonoseminae.

It was assigned to Terebratulida by Sepkoski (2002); and to Trigonoseminae by Williams et al. (2006).

Synonymy list
YearName and author
2002Trigonosemus Sepkoski, Jr.
2006Trigonosemus Williams et al. p. 2215

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Eutriploblastica
Neotriploblastica
Eucoelomata
superphylumLophotrochozoa
Lophophorata
phylumBrachiopodaCuvier 1805
RankNameAuthor
subphylumRhynchonelliformeaWilliams et al. 1996
classRhynchonellataWilliams et al. 1996
orderTerebratulida
suborderTerebratellidinaMuir-Wood 1955
superfamilyLaqueoideaThomson 1927
familyTerebrataliidaeRichardson 1975
subfamilyTrigonoseminaeElliott 1965
genusTrigonosemus

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.

Diagnosis
No diagnoses are available