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Perisphinctes (Liosphinctes) plicatilis
Taxonomy
Ammonites plicatilis was named by Sowerby (1817).
It was recombined as Perisphinctes plicatilis by Waagen (1875); it was recombined as Perisphinctes (Kranaosphinctes) plicatilis by Schlegelmilch (1994); it was recombined as Arisphinctes plicatilis by Guo et al. (2011); it was recombined as Perisphinctes (Liosphinctes) plicatilis by Pandey et al. (2012).
It was recombined as Perisphinctes plicatilis by Waagen (1875); it was recombined as Perisphinctes (Kranaosphinctes) plicatilis by Schlegelmilch (1994); it was recombined as Arisphinctes plicatilis by Guo et al. (2011); it was recombined as Perisphinctes (Liosphinctes) plicatilis 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
Synonymy list
| Year | Name and author |
|---|---|
| 1817 | Ammonites plicatilis Sowerby p. 149 fig. 166 |
| 1875 | Perisphinctes plicatilis Waagen p. 183 |
| 1994 | Perisphinctes (Kranaosphinctes) plicatilis Schlegelmilch p. 59 figs. Pl 18, fig 2 |
| 2011 | Arisphinctes plicatilis Guo et al. |
| 2012 | Perisphinctes (Liosphinctes) plicatilis Pandey et al. p. 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 (Liosphinctes) plicatilis Sowerby 1817
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D.K. Pandey et al. 2012 | Shells small to large, incomplete, septate till end, evolute. Inner whorls depressed, but becoming compressed around 40 mm of shell diameter. Whorl section quadrate in inner whorls, oval in outer whorls with convex to lat lanks merging smoothly into the obtusely rounded venter (Fig. 33A-G). Maximum inlation near umbilical margin. Ornamentation consists of gradually varicostate, very ine to ine, closely spaced (Fig. 34), prorsiradiate primary ribs originating either at the umbilical suture or near the umbilical margin in a rursiradiate fashion to turn prorsiradiate on the lank. Primaries branch into two secondaries at the ventrolateral shoulder on inner whorls and at slightly above or around mid-lateral height on outer whorls. Secondaries cross the venter with slightly forward-directed convexity. Umbilical wall distinct, gradually merging with lanks at the rounded umbilical margin. Constrictions present, numbering at least three per whorl. |
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: base of the Late/Upper Oxfordian to the top of the Middle Oxfordian or 161.20000 to 155.70000 Ma
Collections (10 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Callovian - Kimmeridgian | Russian Federation | Arisphinctes plicatilis (213017 213018) | |
| Late/Upper Callovian - Early/Lower Kimmeridgian | Russian Federation | Arisphinctes plicatilis (213016) | |
| Late/Upper Callovian - Tithonian | Russian Federation | Arisphinctes plicatilis (213019) | |
| Oxfordian - Early/Lower Berriasian | Russian Federation | Arisphinctes plicatilis (213005) | |
| Middle Oxfordian | Russian Federation | Perisphinctes plicatilis (58826) | |
| Middle Oxfordian | France | Perisphinctes plicatilis (11085 12288 163587) | |
| Late/Upper Oxfordian - Early/Lower Kimmeridgian | India (Gujarat) | Perisphinctes plicatilis (234314) |