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Perisphinctes (Perisphinctes) indogermanus
Taxonomy
Perisphinctes indogermanus was named by Waagen (1875). It is not extant.
It was recombined as Perisphinctes (Perisphinctes) indogermanus by Pandey et al. (2012).
It was recombined as Perisphinctes (Perisphinctes) indogermanus by Pandey et al. (2012).
Sister species lacking formal opinion data
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
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1875 | Perisphinctes indogermanus Waagen p. 185 figs. Pl. 47, fig. 1a-c |
| 1875 | Perisphinctes rota Waagen p. 186 figs. Pl. 48, fig. 1a, b |
| 1875 | Perisphinctes obliplicatus Waagen p. 187 figs. Pl. 45, figs. 4a-b; pl. 48, figs. 2a-b |
| 1959 | Dichotomosphinctes (Otosphinctes) rota Collignon p. LXVIII fig. 298 |
| 2012 | Perisphinctes (Perisphinctes) indogermanus Pandey et al. p. 489 figs. Pl. 47, ig. 1a-c (non pl. 48, igs. 3, 4). |
| 2012 | Perisphinctes (Arisphinctes) rota Pandey et al. pp. 507-508 |
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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 (Perisphinctes) indogermanus Waagen 1875
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Invalid names: Perisphinctes obliplicatus Waagen 1875 [synonym], Perisphinctes rota Waagen 1875 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D.K. Pandey et al. 2012 (Perisphinctes (Arisphinctes) rota) | Shells moderately large, evolute, incomplete. Whorl section slightly compressed, suboval to subquadrate with maximum thickness at one-fourth of whorl height, and rounded venter (Fig. 31A). Umbilical wall indistinct, umbilical margin obtusely rounded. Ornamentation consists of gradually varicostate, moderately sharp, dense (inner whorls) to more distant (outer whorls; Fig. 31B) primary ribs originating at umbilical wall near the umbilical margin with rursiradiate orientation then becoming prorsiradiate near the umbilical margin. Primary ribs branch regularly into two secondaries just below the ventrolateral shoulder, which cross the venter with slight forward-directed convexity. Ventral region of outer whorls almost smooth. Ribbing density low to moderate, increasing slightly from diameters of 60 mm to 110 mm (Fig. 32). Constrictions distinct, numbering at least three per whorl. |
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: base of the Late/Upper Oxfordian to the top of the Oxfordian or 161.20000 to 157.30000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Callovian - Oxfordian | India | Perisphinctes indogermanus (68644) | |
| Oxfordian | Chile (Antofagasta) | Perisphinctes indogermanus (172175) | |
| Oxfordian | Madagascar | Otosphinctes rota (98213) | |
| Late/Upper Oxfordian | Madagascar (Atsimo-Andrefana) | Dichotomosphinctes rota (234238) |