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Lyroschizodus orbicularis

Bivalvia - Trigoniida - Trigoniidae

Taxonomy
Lyroschizodus orbicularis was named by Newell and Boyd (1975). Its type specimen is USNM 177161, a valve (Left valve), and it is a 3D body fossil. Its type locality is USNM726r, Hess Canyon, Glass Mountains, which is in a Roadian carbonate limestone in the Word Formation of Texas.

Synonymy list
YearName and author
1975Lyroschizodus orbicularis Newell and Boyd p. 149 fig. 90,91
2004Lyrioschizodus orbicularis Kues p. 196 figs. 18.10-18.11
2012Lyroschizodus orbicularis Quiroz-Barroso et al. p. 172 figs. 5.5, 5.6

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
phylumMollusca
classBivalvia
Eubivalvia
subclassAutobranchia(Groblen 1894)
RankNameAuthor
infraclassHeteroconchia(Gray 1854)
UniomorphiGray 1854
UnioniGray 1854
UnionataGray 1854
orderTrigoniida(Dall 1889)
superfamilyTrigonioidea(Lamarck 1819)
familyTrigoniidaeLamarck 1819
genusLyroschizodus
speciesorbicularis

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.

Lyroschizodus orbicularis Newell and Boyd 1975
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Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
shell height111.4----
valve height910.65.6038.110.59.90

Composition: aragonitec
Locomotion: facultatively mobileo
Life habit: infaunalo
Diet: suspension feedero
Vision: blindc
Created: 2004-02-28 12:34:20
Modified: 2004-02-28 14:34:20
Source: o = order, c = class
Reference: Aberhan et al. 2004

Age range: base of the Virgilian to the top of the Roadian or 303.40000 to 268.80000 Ma

Collections (7 total)


Time interval Ma Country or state Original ID and collection number
Virgilian303.4 - 298.9USA (New Mexico) Lyrioschizodus orbicularis (156715)
Asselian298.9 - 295.5Mexico Lyroschizodus orbicularis (117974)
Kungurian279.3 - 272.3USA (Texas) Lyroschizodus orbicularis (81592 81711 101785)
Roadian272.3 - 268.8USA (Texas) Lyroschizodus orbicularis (43512 type locality: 105932)