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Composita pyriformis
Taxonomy
Composita pyriformis was named by Cooper and Grant (1976). Its type specimen is USNM 153030x, 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 pyriformis Cooper and Grant p. 2161 figs. Pl 660, figs 1-31 |
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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 pyriformis Cooper and Grant 1976
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 30 | 4.62 | 1.80 | 10.7 | 4.90 | 2.62 |
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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 Wordian to the top of the Capitanian or 266.90000 to 259.51000 Ma
Collections (14 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Wordian | USA (Texas) | Composita pyriformis (81586 81939 101867 102619 105896 105902) | |
| Capitanian | USA (Texas) | Composita pyriformis (81613 81626 81632 81697 81706 101809 105895 105994) |