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Dielasma brevicostatum

Rhynchonellata - Terebratulida - Dielasmatidae

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).

Synonymy list
YearName and author
1957Dielasma brevicostatum Cooper p. 66 figs. Pl 12, figs 32-41
1971Gilledia brevicostatum Bamber and Waterhouse p. 154
1996Dielasma brevicostatum Shi and Waterhouse p. 151 figs. Pl 30, figs 1-12

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
—Lophophorata
—PanbrachiopodaCarlson and Cohen 2020
phylumBrachiopodaCuvier 1805
RankNameAuthor
subphylumRhynchonelliformeaWilliams et al. 1996
classRhynchonellataWilliams et al. 1996
orderTerebratulida
suborderTerebratulidina
superfamilyDielasmatoideaSchuchert 1913
familyDielasmatidaeSchuchert 1913
subfamilyDielasmatinaeSchuchert 1913
genusDielasmaKing 1856
speciesbrevicostatum

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
Measurements
partNmeanminimummaximummedians.d.
shell height211.810.813.011.91.56

Composition: low Mg calcitep
Environment: marineuc
Locomotion: stationaryo
Attached: yesp
Life habit: low-level epifaunalo
Diet: suspension feedero
Vision: blindc
Created: 2004-02-28 14:14:12
Modified: 2018-11-10 17:47:38
Source: o = order, c = class, p = phylum, uc = unranked clade
References: Aberhan et al. 2004, Nesnidal et al. 2013

Age range: base of the Asselian to the top of the Kungurian or 298.90000 to 272.30000 Ma

Collections (10 total)


Time interval Ma Country or state Original ID and collection number
Asselian298.9 - 295.5Canada (Yukon) Gilledia brevicostatum (101732)
Sakmarian293.52 - 290.1Canada (Yukon) Dielasma brevicostatum (117684 117723)
Kungurian279.3 - 272.3USA (Oregon) Dielasma brevicostatum (type locality: 40969 40977 40979 41232 41275 41277 129201)