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Composita apsidata
Taxonomy
Composita apsidata was named by Cooper and Grant (1976). Its type specimen is USNM 153004d, a shell (Articulated shell), and it is not a trace fossil. Its type locality is USNM702d, Hill 5725, Glass Mountains, which is in a Kungurian reef, buildup or bioherm limestone in the Hess Formation of Texas.
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 |
|---|---|
| 1976 | Composita apsidata Cooper and Grant p. 2145 figs. Pl 653, figs 11-37 |
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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 apsidata Cooper and Grant 1976
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 39 | 6.86 | 1.40 | 16.4 | 8.40 | 5.06 |
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| Source: subo = suborder, c = class, p = phylum, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Nesnidal et al. 2013 | |||||