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Coosella perplexa
Taxonomy
Crepicephalus perplexus was named by Palmer (1954) [Crepicephalus? perplexus]. Its type specimen is UT-32119, a cephalon/head (cranidium), and it is a 3D body fossil. Its type locality is MC-529, which is in a Paibian marine limestone in the Riley Formation of Texas.
It was recombined as Coosella perplexa by Stitt and Perfetta (2000).
It was recombined as Coosella perplexa by Stitt and Perfetta (2000).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1954 | Crepicephalus perplexus Palmer p. 733 figs. Pl. 77, fig 1, 2, 4 |
| 2000 | Coosella perplexa Stitt and Perfetta p. 206 fig. 7.12–7.18 |
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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.
†Coosella perplexa Palmer 1954
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: g = genus, f = family, c = class | |||||
| References: Whittington et al. 1997, Hendy 2009, Aberhan et al. 2004 | |||||
Age range: Paibian or 497.00000 to 494.20000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Paibian | USA (Texas) | Crepicephalus perplexus (208657 type locality: 208674) | |
| Dresbachian | USA (South Dakota) | Coosella perplexa (7287 7403 8021) |