Pseudopolygnathus is an extinct genus of conodonts in the family Polygnathidae.
Pseudopolygnathus granulobatus is from the Late Devonian or Early Carboniferous of Italy.Conodonts across the Devonian/Carboniferous boundary in SE Sardinia (Italy). Angelo Mossoni, Nicola Carta, Carlo Corradini and Claudia Spalletta, Bulletin of Geosciences, 2015, volume 90, issue 2, pages 371–388,
The three subspecies of P. granulosus, P. g. laepensis, P. g. salawinensis and P. g. maepoensis are from the Late Devonian of Thailand.Late Devonian conodonts from northwestern Thailand. Norman M. Savage (2013), Bourland Printing / Trinity Press. pages 1–48, .
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