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Composita emarginata affinis
Taxonomy
Composita emarginata affinis was named by Girty (1909) [Composita emarginata var affinis]. Its type specimen is USNM 118609a, a shell, and it is a 3D body fossil.
It was recombined as Composita affinis by Cloud (1944), Cooper and Grant (1976), Torres-MartÃnez et al. (2019).
It was recombined as Composita affinis by Cloud (1944), Cooper and Grant (1976), Torres-MartÃnez et al. (2019).
Sister species lacking formal opinion data
Athyris globularis, Athyris globularis, Athyris globularis, Athyris protea, Athyris protea, Athyris protea, Athyris protea, Athyris protea, C. ambigua, C. ambigua, C. argenta, C. athabaskensis, C. bellula, C. caimaensis, C. casteri, C. dawsoni, C. deltoides, C. ficoidea, C. gibbosa, C. globularis, C. hendersoni, C. humilis, C. humulis, C. hunanensis, C. immatura, C. lateralis, C. madisonensis, C. matutina, C. megala, C. mexicana, C. obligata, C. oblonga, C. ozarkana, C. poposiensis, C. prolixa, C. ptygmation, C. salve, C. strigata, C. struniensis, C. subquadtrata, C. subtilata, C. subtilia, C. trilobata, C. trilobata, C. trilobita, C. wasatchensis, C. windsorensis, C. humilis, C. ozarkana
Synonymy list
| Year | Name and author |
|---|---|
| 1909 | Composita emarginata affinis Girty p. 389 figs. Pl 15, figs 6-7b |
| 1944 | Composita affinis Cloud p. 65 figs. Pl 18, figs 20-22 |
| 1976 | Composita affinis Cooper and Grant p. 2142 figs. Pl 652, figs 1-44 |
| 2019 | Composita affinis Torres-MartÃnez et al. p. 43 figs. 4.9-4.11 |
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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 emarginata affinis Girty 1909
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 2 | 12.7 | 11.6 | 14.0 | 12.8 | 1.70 |
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| Source: subo = suborder, c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Aberhan et al. 2004 | |||||
Age range: base of the Roadian to the top of the Capitanian or 274.40000 to 259.51000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Roadian | USA (Texas) | Composita emarginata (113208) | |
| Roadian | Mexico (Coahuila) | Composita emarginata (133173 150563) | |
| Wordian | USA (Texas) | Composita emarginata (150256) | |
| Capitanian | USA (Texas) | Composita emarginata (108812) |