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Dielasma rotundum

Rhynchonellata - Terebratulida - Dielasmatidae

Taxonomy
Dielasma rotundum was named by Chronic (1949). Its type specimen is AMNH 26957/1:1, a shell (Articulated shell), and it is a 3D body fossil. Its type locality is AMNH297, Bed 13a, Cerro Ampáy section 7, Abancáy, which is in an Asselian/Sakmarian marine limestone in Peru.

Synonymy list
YearName and author
1949Dielasma rotundum Chronic p. 101
1953Dielasma rotundum Chronic p. 96 figs. Pl 18, figs 1a-3b

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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
speciesrotundum

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 rotundum Chronic 1949
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Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
shell height212.011.412.612.00.849

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: Nesnidal et al. 2013, Aberhan et al. 2004

Age range: base of the Asselian to the top of the Sakmarian or 298.90000 to 290.10000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Asselian - Sakmarian298.9 - 290.1Peru (Apurimac) Dielasma rotundum (type locality: 41352)