Heteroptychodus

Heteroptychodus is an extinct genus of cartilaginous fish that lived during the Early Cretaceous period. It contains two species, H. kokutensis and H. steinmanni that have been found in Thailand.[1] Additionally, one more unidentified Heteroptychodus has been discovered in Japan.[1] It was first thought to be a type of Ptychodontidae but has more recently been reclassified as a Hybodontid.[2]

Heteroptychodus
Temporal range: Early Cretaceous,
Scientific classification Edit this classification
(disputed)
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Order: †Hybodontiformes
Family: †Hybodontidae
Genus: †Heteroptychodus
Yabe and Obata, 1930
Species
  • †Heteroptychodus kokutensis
  • †Heteroptychodus steinmanni

References
  1. "†Heteroptychodus Yabe and Obata 1930 (elasmobranch)". fossilworks.org. Retrieved 28 August 2023.
  2. "Heteroptychodus ✝". mindat.org. Retrieved 28 August 2023.
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