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Thomondia

Trilobita - Ptychopariida - Isocolidae

Taxonomy
Thomondia was named by Harper (1942) [Sepkoski's age data: O Ashg]. It is not extant.

It was assigned to Isocolidae by Weir (1959); to Trilobita by Sepkoski (2002); and to Shumardiidae by Jell and Adrain (2003).

Synonymy list
YearName and author
1942Thomondia Harper
1959Thomondia Weir p. 375
2002Thomondia Sepkoski, Jr.
2003Thomondia Jell and Adrain p. 453

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
RankNameAuthor
phylumArthropodaLatreille 1829
subphylumMandibulata
classTrilobitaWalch 1771
orderPtychopariidaSwinnerton 1915
familyIsocolidaeAngelin 1854
genusThomondiaHarper 1942

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
ReferenceDiagnosis
J. A. Weir 1959Isocolidae with a single pair of pit-like lateral glabellar furrows confluent with occipital furrow; lateral border furrows conf1uent with preglabellar furrow; facial sutures situated on lateral border.