Pachydiscus (Pachydiscus) yama Forbes 1846 (ammonite)

Cephalopoda - Ammonitida - Pachydiscidae

Alternative combination: Ammonites yama

Full reference: E. Forbes. 1846. Report on the fossil invertebrata from southern India, collected by Mr. Kaye and Mr. Cunliffe. Transactions of the Geological Society of London, Series 2 7:97-174

Belongs to Pachydiscus (Pachydiscus) according to W. J. Kennedy and R. A. Henderson 1992

See also Forbes 1846

Sister taxa: Pachydiscus (Pachydiscus) arkansanus, Pachydiscus (Pachydiscus) armenicus, Pachydiscus (Pachydiscus) australis, Pachydiscus (Pachydiscus) awajiensis, Pachydiscus (Pachydiscus) cayeuxi, Pachydiscus (Pachydiscus) colligatus, Pachydiscus (Pachydiscus) complanatus, Pachydiscus (Pachydiscus) dossantosi, Pachydiscus (Pachydiscus) duelmensis, Pachydiscus (Pachydiscus) egertoni, Pachydiscus (Pachydiscus) gutierrezi, Pachydiscus (Pachydiscus) haldemsis, Pachydiscus (Pachydiscus) hazzardi, Pachydiscus (Pachydiscus) jacquoti, Pachydiscus (Pachydiscus) jeani, Pachydiscus (Pachydiscus) kamishakensis, Pachydiscus (Pachydiscus) launayi, Pachydiscus (Pachydiscus) noetlingi, Pachydiscus (Pachydiscus) oldhami, Pachydiscus (Pachydiscus) ootacodensis, Pachydiscus (Pachydiscus) paulsoni, Pachydiscus (Pachydiscus) rogeri, Pachydiscus (Pachydiscus) subcompressus, Pachydiscus (Pachydiscus) subrobustus, Pachydiscus (Pachydiscus) ultimus

Ecology: fast-moving nektonic carnivore

Average measurements (in mm): shell diameter 16.8

Distribution: found only at Pondicherry (Cretaceous of India)

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