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Elrathia grazierensis

Trilobita - Ptychopariida - Alokistocaridae

Taxonomy
Elrathia grazierensis was named by Rasetti (1965). Its type specimen is USNM 145029, a cephalon/head (cranidium), and it is a 3D body fossil. Its type locality is USNM 23t, which is in a Solvan/Menevian carbonate limestone in the Pleasant Hill Limestone Formation of Pennsylvania.

Sister species lacking formal opinion data

Synonymy list
YearName and author
1965Elrathia grazierensis Rasetti p. 1013 figs. Pl. 119, fig. 21-23

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
RankNameAuthor
subphylumArtiopoda(Hou and Bergstrom)
classTrilobitaWalch 1771
subclassLibristoma
orderPtychopariidaSwinnerton 1915
familyAlokistocaridaeResser 1939
genusElrathiaWalcott 1924
speciesgrazierensis

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.

Elrathia grazierensis Rasetti 1965
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Diagnosis
No diagnoses are available