Basic info Taxonomic history Classification Included Taxa
Morphology Ecology and taphonomy External Literature Search Age range and collections

Elrathia occidentalis

Trilobita - Ptychopariida - Alokistocaridae

Taxonomy
Ptychoparia occidentalis was named by Walcott (1884).

It was recombined as Elrathia occidentalis by Palmer (1954).

Sister species lacking formal opinion data
E. alaskensis, E. chuwansis, E. kindlei

Synonymy list
YearName and author
1884Ptychoparia occidentalis Walcott p. 51 figs. pl. 10, fig. 5
1954Elrathia occidentalis Palmer p. 78

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—EcdysozoaAguinaldo et al. 1997
—Panarthropoda
phylumArthropodaLatreille 1829
RankNameAuthor
subphylumArtiopoda(Hou and Bergstrom)
classTrilobitaWalch 1771
subclassLibristoma
orderPtychopariidaSwinnerton 1915
familyAlokistocaridaeResser 1939
genusElrathiaWalcott 1924
speciesoccidentalis()

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 occidentalis Walcott 1884
show all | hide all
Diagnosis
No diagnoses are available