| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Perisphinctes (Kranaosphinctes) pagri
Taxonomy
Perisphinctes pagri was named by Waagen (1875). It is not extant. Its type locality is Kanthkot Ammonite Bed exposed on bed of Trambau River, which is in an Oxfordian/Kimmeridgian marine sandstone in India.
It was recombined as Perisphinctes (Kranaosphinctes) pagri by Pandey et al. (2012).
It was recombined as Perisphinctes (Kranaosphinctes) pagri by Pandey et al. (2012).
Sister species lacking formal opinion data
Kranaosphinctes subbullingdonensis, Kranaosphinctes poissoni, Kranaosphinctes randrianarivonyi, 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 |
|---|---|
| 1875 | Perisphinctes pagri Waagen pp. 181, 42 figs. Fig. 2a-c |
| 2012 | Perisphinctes (Kranaosphinctes) pagri Pandey et al. p. 492 |
Is something missing? Join the Paleobiology Database and enter the data
|
|
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 (Kranaosphinctes) pagri Waagen 1875
show all | hide all
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D.K. Pandey et al. 2012 | Shell small to moderately large, incomplete, septate till end, evolute and depressed. Whorl section subcircular with moderately to acutely rounded lanks merging smoothly into wide, slightly arched venter (Fig. 11A-E). Umbilical wall short, moderately distinct, steeply inclined. Ornamentation consists of varicostate, moderately thick, sharp primary ribs, numbering about 40 per whorl (Fig. 12A) and originating near the umbilical suture or the middle of the umbilical wall with more or less rectiradiate orientation and becoming very slightly prorsiradiate around the umbilical margin. Primaries branch regularly into two or three iner secondaries at the ventrolateral region (Fig. 11F). They cross the venter either straight or with slight forward or backward directed convexity. Such convexity is more common on outer whorls. Constrictions distinct, more strongly inclined towards the aperture than the ribs (forming an angle of around 20˚ with primary ribs), numbering at least two per whorl. |
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|
||||
|
|
||||
| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: base of the Late/Upper Oxfordian to the top of the Early/Lower Kimmeridgian or 161.20000 to 150.80000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Oxfordian - Early/Lower Kimmeridgian | India (Gujarat) | Perisphinctes pagri (234314) |