Basic info Taxonomic history Classification Included Taxa
Morphology Ecology and taphonomy External Literature Search Age range and collections

Lyroschizodus

Bivalvia - Trigoniida - Trigoniidae

Taxonomy
Lyroschizodus was named by Newell and Boyd (1975) [Sepkoski's age data: P Leon-m Sepkoski's reference number: 1066].

It was assigned to Trigonioida by Sepkoski (2002); to Pelecypoda by Kues (2004); and to Trigoniidae by Boyd and Newell (1979) and Quiroz-Barroso et al. (2012).

Synonymy list
YearName and author
1975Lyroschizodus Newell and Boyd p. 149
1979Lyroschizodus Boyd and Newell p. 17
2002Lyroschizodus Sepkoski
2004Lyrioschizodus Kues p. 196
2012Lyroschizodus Quiroz-Barroso et al. p. 172

Is something missing? Join the Paleobiology Database and enter the data

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

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.

G. †Lyroschizodus Newell and Boyd 1975
show all | hide all
†Lyroschizodus djemelensis Boyd and Newell 1979
†Lyroschizodus orbicularis Newell and Boyd 1975
†Lyroschizodus praecox Waagen 1881
†Lyroschizodus subelegans Waagen 1881
†Lyroschizodus tobai Hayasaka 1925
Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
shell height48.345.8511.48.542.30
valve height2310.64.3538.112.06.75

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 Changhsingian or 303.70000 to 252.17000 Ma

Collections (56 total)


Time interval Ma Country or state Original ID and collection number
Virgilian303.7 - 298.9USA (New Mexico) Lyrioschizodus orbicularis (156715)
Asselian298.9 - 295.5Mexico L. orbicularis (117974)
Kungurian279.3 - 272.3Russian Federation Schizodus tobai (225521)
Kungurian279.3 - 272.3USA (Oklahoma) Schizodus oklahomensis (90741 90742 90743 90744 90748)
Kungurian279.3 - 272.3USA (Texas) L. orbicularis (81592 81711 101785) Schizodus oklahomensis (90740 90745 90746 90749 90750 90751)
Kungurian279.3 - 272.3USA (Wyoming) Schizodus oklahomensis (105371)
Kungurian279.3 - 272.3Malaysia L. sp. (51566)
Roadian272.3 - 268.8Russian Federation L. praecox (113627)
Roadian272.3 - 268.8Japan Myophoria tobai (109636)
Roadian272.3 - 268.8USA (Wyoming) Schizodus oklahomensis (90006)
Roadian272.3 - 268.8USA (Texas) L. orbicularis (43512 105932)
Wordian266.9 - 264.28Tunisia (Madanin) L. djemelensis (41654 41835 41853 41862 41864 41875 41880 41976)
Wordian266.9 - 264.28Japan Schizodus tobai (114493 114494)
Capitanian264.28 - 259.51USA (Wyoming) Schizodus oklahomensis (105275)
Capitanian264.28 - 259.51USA (Oklahoma) Schizodus oklahomaensis (136219) Schizodus oklahomensis (116653)
Capitanian264.28 - 259.51USA (Montana) Schizodus oklahomensis (81427)
Capitanian264.28 - 259.51USA (Texas) Schizodus oklahomensis (81989 97264 116644 116645 116648 116650)
Capitanian264.28 - 259.51Tunisia (Madanin) L. djemelensis (41660 41661 41837 41959 41962)
Wuchiapingian259.9 - 254.17USA (Wyoming) Schizodus oklahomensis (95417)
Wuchiapingian259.9 - 254.17Pakistan Schizodus praecox (126895)
Changhsingian254.17 - 252.17Pakistan Myophoria praecox, Myophoria subelegans (89061 119554) Myophoria subelegans, Schizodus praecox (126933) Schizodus praecox (126934 126981)