Cephalopoda - Ceratitida - Gyronitidae
Alternative combination: Prionolobus atavus
Synonyms: Gyronites evolvens Waagen 1895, Gyronites planissimus Spath 1934, Mudiceras planissimum Spath 1934
Full reference: W. Waagen. 1895. Fossils from the Ceratite Formation. Salt Range Fossils, Palaeontologia Indica, Series 13 2(1):1-323
Belongs to Ambites according to D. Ware and H. Bucher 2018
See also Brühwiler and Bucher 2012, Brühwiler et al. 2010, Spath 1934, Waagen 1895, Ware and Bucher 2018 and Xu 1988
Sister taxa: Ambites bjerageri, Ambites bojeseni, Ambites discus, Ambites ferruginus, Ambites frechi, Ambites impressa, Ambites lilangensis, Ambites nyingmai, Ambites radiatus, Ambites rupestris, Ambites subradiatus, Ambites superior, Ambites tenuis, Ambites wissneri
Type specimens:
- Ambites atavus: Its type locality is Virgal, Lower Ceratite Limestone, Salt Range, which is in a Dienerian marine limestone in the Lower Ceratite Limestone Formation of Pakistan
- Gyronites evolvens: Its type locality is Khoora, Ceratite Marls, Salt Range, which is in a Dienerian carbonate limestone in the Ceratite Marls Formation of Pakistan.
- Gyronites planissimus: BMNH C. 10447.
Average measurements (in mm): shell diameter 40.2
Distribution:
• Triassic of China (4 collections), India (5), Pakistan (10), the Russian Federation (2)
Total: 21 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.