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

Lyroschizodus praecox

Bivalvia - Trigoniida - Trigoniidae

Taxonomy
Myophoria praecox was named by Waagen (1881).

It was recombined as Schizodus praecox by Reed (1944); it was recombined as Lyroschizodus praecox by Muromtseva and Guskov (1984).

Synonymy list
YearName and author
1881Myophoria praecox Waagen p. 243 figs. Pl 19, figs 17-19
1944Schizodus praecox Reed
1984Lyroschizodus praecox Muromtseva and Guskov p. 82 figs. Pl 35, fig 14

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

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
speciespraecox()

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 praecox Waagen 1881
show all | hide all
Diagnosis
No diagnoses are available
Measurements
partNmean
shell height19.00
valve height115.0

Composition: aragonitef
Environment: marinef
Locomotion: fast-movingf
Life habit: shallow infaunalf
Diet: suspension feederf
Vision: blindf
Created: 2025-05-16 13:05:25
Modified: 2025-05-16 13:05:25
Source: f = family
References: Ros-Franch et al. 2014, Aberhan et al. 2004

Age range: base of the Roadian to the top of the Changhsingian or 274.40000 to 251.90200 Ma

Collections (7 total)


Time interval Ma Country or state Original ID and collection number
Roadian274.4 - 266.9Russian Federation Lyroschizodus praecox (113627)
Wuchiapingian259.51 - 254.14Pakistan Schizodus praecox (126895)
Changhsingian254.14 - 251.902Pakistan Myophoria praecox (89061 119554) Schizodus praecox (126933 126934 126981)