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Opisthotrigonia retrorsa

Bivalvia - Trigoniida - Trigoniidae

Taxonomy
Trigonia retrorsa was named by Kitchin (1903). It is not extant. It is the type species of Opisthotrigonia.

It was recombined as Opisthotrigonia retrorsa by Cox (1952).

Synonymy list
YearName and author
1903Trigonia retrorsa Kitchin
1952Opisthotrigonia retrorsa Cox

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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
genusOpisthotrigonia
speciesretrorsa(Kitchin 1903)

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.

Opisthotrigonia retrorsa Kitchin 1903
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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: Aberhan et al. 2004, Ros-Franch et al. 2014

Age range: base of the Late/Upper Tithonian to the top of the Berriasian or 145.06000 to 137.05000 Ma

Collections (3 total)


Time interval Ma Country or state Original ID and collection number
Tithonian149.2 - 143.1India (Gujarat) Opisthotrigonia retrorsa (64623)
Late/Upper Tithonian145.06 - 143.1India (Gujarat) Opisthotrigonia retrorsa (66780)
Berriasian143.1 - 137.05India (Gujarat) Opisthotrigonia retrorsa (64624)