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Composita discina
Taxonomy
Composita discina was named by Cooper and Grant (1976). Its type specimen is USNM 153013a, a shell (Articulated shell), and it is not a trace fossil.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1976 | Composita discina Cooper and Grant p. 2151 figs. Pl 656, figs 1-20 |
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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.
†Composita discina Cooper and Grant 1976
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 28 | 6.93 | 2.50 | 12.3 | 7.45 | 2.50 |
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| Source: subo = suborder, c = class, p = phylum, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Nesnidal et al. 2013 | |||||
Age range: base of the Gzhelian to the top of the Artinskian or 303.70000 to 283.30000 Ma
Collections (18 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Gzhelian | USA (Texas) | Composita discina (43587) | |
| Artinskian | USA (Texas) | Composita discina (43533 43540 43559 43578 43579 43588 44509 44566 75885 75931 75933 75954 102613 105674 105680 105721) | |
| Artinskian - Kungurian | USA (Texas) | Composita discina (105740) |