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Derbyia dirata
Taxonomy
Derbyia dirata was named by Grant (1993). Its type specimen is USNM 402119, a valve (Ventral valve), and it is not a trace fossil. Its type locality is USNM9592, Agrelias 2, Chios, which is in a Roadian open shallow subtidal bindstone in the Gymnocodiacean Limestone Formation of Greece.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1993 | Derbyia dirata Grant pp. 8-9 figs. 7.1-7.7 |
| 2007 | Derbyia dirata Shen and Shi p. 32 figs. Pl 12, fig 14 |
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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.
†Derbyia dirata Grant 1993
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: c = class, p = phylum, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Nesnidal et al. 2013 | |||||
Age range: base of the Roadian to the top of the Changhsingian or 272.30000 to 252.17000 Ma
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Roadian | Greece | Derbyia dirata (75536 109356 109358 109362 109366) | |
| Changhsingian | China (Chongqing) | Derbyia dirata (94984) |