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Vex semisimplex

Rhynchonellata - Terebratulida

Taxonomy
Terebratula semisimplex was named by White (1879). It is a 3D body fossil. Its type locality is USNM 9344, John Gray's Lake (locality 1), Unit A, which is in a Spathian marine mixed carbonate-siliciclastic in the Thaynes Formation of Idaho.

It was recombined as Vex semisimplex by Hoover (1979), Cooper (1983).

Synonymy list
YearName and author
1879Terebratula semisimplex White p. 108
1979Vex semisimplex Hoover p. 10 figs. Pl 1, figs 25-42; pl 2, figs 1-5
1983Vex semisimplex Cooper p. 50 figs. Pl 61, figs 16-20

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
—Lophophorata
—PanbrachiopodaCarlson and Cohen 2020
RankNameAuthor
phylumBrachiopodaCuvier 1805
subphylumRhynchonelliformeaWilliams et al. 1996
classRhynchonellataWilliams et al. 1996
orderTerebratulida
suborderTerebratulidina
genusVex
speciessemisimplex()

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.

†Vex semisimplex White 1879
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Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
shell height226.863.5010.27.251.94

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: Spathian or 248.10000 to 246.70000 Ma

Collections (11 total)


Time interval Ma Country or state Original ID and collection number
Olenekian249.9 - 246.7USA (Idaho) Vex semisimplex (61722 109729 109754 109760)
Smithian - Spathian249.9 - 246.7USA (Nevada) Terebratula semisimplex (35168)
Spathian248.1 - 246.7USA (Idaho) Terebratula semisimplex (type locality: 120982) Vex semisimplex (109725 109726 109727 109755 109770)