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Ophiacantha subtilirugosa
Taxonomy
Ophiacantha subtilirugosa was named by Kristan-Tollmann and Gramann (1992). It is a 3D body fossil. Its type locality is Sample S08-61KD, Sonne Cruise 8, Wombat Plateau, which is in a Rhaetian deep subtidal marl in Australia.
Synonymy list
| Year | Name and author |
|---|---|
| 1992 | Ophiacantha subtilirugosa Kristan-Tollmann and Gramann p. 468 figs. PI. 3 figs. 1-6 |
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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.
†Ophiacantha subtilirugosa Kristan-Tollmann and Gramann 1992
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| E. Kristan-Tollmann and F. Gramann 1992 | The eight laterals are moderately arched with faint or missing constriction. There are three to four medium-sized, not very projected bases of thorns and one or two flat pillars at the proximal
edge. The whole surface consists of faint, subtle, slightly undulating transversal striae, some of which are branching or vanishing. The striae slightly coarsen toward the distal rim. |
Measurements
No measurements are available
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| Source: f = family, c = class, p = phylum | |||||
| References: Warner 1982, Aberhan 1992, Aberhan et al. 2004 | |||||