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Taxonomy
Orbicula quadrata was named by McCoy (1844). It is not extant.
It was recombined as Petrocrania quadrata by Brunton and Tilsley (1991).
It was recombined as Petrocrania quadrata by Brunton and Tilsley (1991).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1844 | Orbicula quadrata McCoy p. 104 figs. Pl. XX, Fig. 1 |
| 1991 | Petrocrania quadrata Brunton and Tilsley p. 289 |
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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.
†Petrocrania quadrata McCoy 1844
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: g = genus, o = order, c = class | |||||
| References: Williams et al. 1996, Hendy 2009, Aberhan et al. 2004 | |||||