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Trachycheilus

Trilobita - Ptychopariida - Alokistocaridae

Taxonomy
Trachycheilus was named by Resser (1945) [Sepkoski's age data: Cm mMid-u Sepkoski's reference number: 1089]. It is not extant.

It was assigned to Ptychopariida by Sepkoski (2002); and to Alokistocaridae by Jell and Adrain (2003).

Synonymy list
YearName and author
1945Trachycheilus Resser
2002Trachycheilus Sepkoski, Jr.
2003Trachycheilus Jell and Adrain p. 454

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
RankNameAuthor
subphylumMandibulata
classTrilobitaWalch 1771
orderPtychopariidaSwinnerton 1915
suborderPtychopariinaRichter 1933
familyAlokistocaridaeResser 1939
genusTrachycheilusResser 1945

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