| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Opisthotrigonia
Taxonomy
Opisthotrigonia was named by Cox (1952) [Sepkoski's age data: J Kimm K Apti Sepkoski's reference number: 1115]. It is not extant. Its type is Trigonia retrorsa.
It was assigned to Trigoniidae by Cox (1952); and to Trigonioida by Sepkoski (2002).
It was assigned to Trigoniidae by Cox (1952); and to Trigonioida by Sepkoski (2002).
Species
Species lacking formal opinion data
Is something missing? Join the Paleobiology Database and enter the data
|
|
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.
Diagnosis
No diagnoses are available
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|
||||
|
|
||||
| Source: f = family | |||||
| References: Ros-Franch et al. 2014, Aberhan et al. 2004 | |||||
Age range: base of the Late/Upper Kimmeridgian to the top of the Late/Upper Valanginian or 152.21000 to 132.60000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Kimmeridgian | Tanzania | O. curta (36331) | |
| Tithonian | India (Gujarat) | O. retrorsa (64623) | |
| Late/Upper Tithonian | India (Gujarat) | O. retrorsa (66780) | |
| Berriasian | India (Gujarat) | O. retrorsa (64624) | |
| Late/Upper Valanginian | India (Gujarat) | O. spissicostata (66781) |