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Xystocrania pyriformis

Trilobita - Phacopida - Cheiruridae

Taxonomy
Xystocrania pyriformis was named by Ross (1972). Its type specimen is USNM 167229, a cephalon/head (cranidium), and it is a 3D body fossil. Its type locality is D1968 CO. Meiklejohn mud-mound, which is in a Whiterockian reef, buildup or bioherm limestone in the Antelope Valley Formation of Nevada.

Synonymy list
YearName and author
1972Xystocrania pyriformis Ross, Jr. p. 39 figs. Pl. 17, figs. 17-20

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Ecdysozoa
—Panarthropoda
phylumArthropodaLatreille 1829
RankNameAuthor
subphylumArtiopoda(Hou and Bergstrom)
classTrilobitaWalch 1771
orderPhacopidaSalter 1864
suborderCheirurinaHarrington and Leanza 1957
familyCheiruridaeHawle and Corda 1847
genusXystocrania
speciespyriformis

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.

†Xystocrania pyriformis Ross, Jr. 1972
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Diagnosis
No diagnoses are available