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Perisphinctes (Dichotomosphinctes) lehmani
Taxonomy
Orionoides lehmani was named by Collignon (1959). Its type specimen is UBGD.010277 and is a 3D body fossil. Its type locality is Ravin Andangovato I, which is in an Oxfordian marine marl in Madagascar.
It was recombined as Perisphinctes (Dichotomosphinctes) lehmani by Pandey et al. (2012).
It was recombined as Perisphinctes (Dichotomosphinctes) lehmani by Pandey et al. (2012).
Sister species lacking formal opinion data
Dichotomosphinctes decaryi, Dichotomosphinctes martini, Dichotomosphinctes sikilyensis, P. africanus, P. andium, P. mairei-matheyi, P. malinowskae, P. panderi, P. polygyratus, P. praestenocyclus, P. progeron, P. quadratus, P. scythicus, P. siemiradzkii, P. eucostatus, P. quadratus, P. pickeringius, P. buckmani, P. buckmanni, P. luciaeformis, P. crassissimus, P. A, P. B, P. anguiculus, P. patturatensis, P. siemirazkii, P. roedereri, P. alatus, P. andelotensis, P. densecostatus, P. pumilus, P. dorsoplanus, P. dacquei, P. polygyratus
Synonymy list
| Year | Name and author |
|---|---|
| 1959 | Orionoides lehmani Collignon pp. 59, 60 figs. 276, 277 |
| 2012 | Perisphinctes (Dichotomosphinctes) lehmani Pandey et al. p. 516 |
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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.
†Perisphinctes (Dichotomosphinctes) lehmani Collignon 1959
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D.K. Pandey et al. 2012 | Shell small, incomplete, evolute, depressed. Whorl section rounded with uniformly arched lanks and venter (Fig. 47A). Ornamentation consists of thick, prorsiradiate primary ribs branching into two or three iner secondaries at the ventrolateral region (Fig. 47B), which cross the venter either straight or with very faint backward-directed convexity. Constrictions deep, forwardly inclined. |
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: Late/Upper Oxfordian or 161.20000 to 155.70000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Oxfordian | Madagascar (Atsimo-Andrefana) | Orionoides lehmani (234237 234238) |