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Dielasma brevicostatum
Taxonomy
Dielasma brevicostatum was named by Cooper (1957). Its type specimen is USNM 125413 and is a 3D body fossil. Its type locality is UO 2202-2, "Triangulation Hill", Grindstone-Twelvemile Creek area, which is in a Kungurian marine limestone/sandstone in the Coyote Butte Formation of Oregon.
It was recombined as Gilledia brevicostatum by Bamber and Waterhouse (1971).
It was recombined as Gilledia brevicostatum by Bamber and Waterhouse (1971).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1957 | Dielasma brevicostatum Cooper p. 66 figs. Pl 12, figs 32-41 |
| 1971 | Gilledia brevicostatum Bamber and Waterhouse p. 154 |
| 1996 | Dielasma brevicostatum Shi and Waterhouse p. 151 figs. Pl 30, figs 1-12 |
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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.
†Dielasma brevicostatum Cooper 1957
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Diagnosis
No diagnoses are available