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Tretaspis sagenosus

Artiopoda - Trinucleida - Trinucleidae

Taxonomy
Tretaspis sagenosus was named by Whittington (1959) [Paratypes: USNM 137691a-c]. Its type specimen is USNM 137690, a cephalon/head (cranidium), and it is a 3D body fossil.

Sister species lacking formal opinion data
T. calcaria, T. ceryx, T. clarkei, T. convergens, T. eximia, T. hadelandicab, T. norvegicus

Synonymy list
YearName and author
1959Tretaspis sagenosus Whittington p. 448 figs. Pl. 24, figs. 1-5

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—EcdysozoaAguinaldo et al. 1997
—Panarthropoda
phylumArthropodaGravenhorst 1843
classArtiopodaHou and Bergstrom
RankNameAuthor
classTrilobitaWalch 1771
subclassLibristoma
orderTrinucleida(Swinnerton 1915)
familyTrinucleidaeHawle and Corda 1847
subfamilyTrinucleinaeHawle and Corda 1847
genusTretaspis
speciessagenosus

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.

†Tretaspis sagenosus Whittington 1959
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Diagnosis
No diagnoses are available