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Trimarginia
Taxonomy
Trimarginia was named by Arkell (1952) [Sepkoski's age data: J Bajo-u]. Its type is Trimarginia sinaitica.
It was assigned to Oppeliinae by Arkell et al. (1957); and to Ammonoidea by Sepkoski (2002).
It was assigned to Oppeliinae by Arkell et al. (1957); and to Ammonoidea by Sepkoski (2002).
Species
T. sinaitica (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1952 | Trimarginia Arkell p. 308 |
| 1957 | Trimarginia Arkell et al. p. 275 |
| 2002 | Trimarginia Sepkoski |
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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
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: Bajocian or 170.30000 to 168.30000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Bajocian | Kenya | T. sp. (191124) | |
| Late/Upper Bajocian | Egypt | T. sinaitica (184587) | |
| Bajocian | Egypt | Oppelia waterhousei (170868) |