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Stegophiura trispinosa
Taxonomy
Stegophiura trispinosa was named by Jagt (2000). It is not extant. Its type specimen is Holotype NHMM JJ 10604a, paratypes NHMM JJ 10604b, MB NHMM 1044-9d/g.
Synonymy list
| Year | Name and author |
|---|---|
| 2000 | Stegophiura trispinosa Jagt p. 20 figs. pl. 3, fig. 3-9 |
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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.
†Stegophiura trispinosa Jagt 2000
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. W. M. Jagt 2000 | Strongly curved lateral arm plates with concave proximal and convex
distal margin, three crater-like spine tubercles in a much constricted ventral portion of the plate, adjacent to the tentacle pore indentation. Outer surface, except proximal margin pitted, with pits aligned. Radial shields large, curved, smooth with bevelled margin; a pit-like depression for genital articulation on the inner surface. |
Measurements
No measurements are available
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| Source: c = class, p = phylum | |||||
| References: Aberhan et al. 2004, Aberhan 1992 | |||||
Age range: base of the Late/Upper Campanian to the top of the Early/Lower Maastrichtian or 83.50000 to 66.00000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Campanian | Belgium (Liege) | Stegophiura trispinosa (32147) | |
| Early/Lower Maastrichtian | Belgium (Liege) | Stegophiura trispinosa (32148) |