Notidanodon is an extinct genus of cow shark. Fossils ascribed to this genus are known from the Jurassic and Cretaceous periods. Recently, the genus underwent a major revision and was split into two after the erection of Xampylodon to accommodate the species X. dentatus, X. loozi, and X. brotzeni.
Species
The earliest occurrences of attributed specimens are from the
Tithonian of New Zealand, and the latest are from the
Maastrichtian of Antarctica. Currently, only two
Mesozoic species,
Notidanodon pectinatus and
Notidanodon lanceolatus, are attributed to the genus. A putative third species,
Notidanodon antarcti, appears only in the caption of Figure 2 in Grande and Chatterjee (1987), but the same material was treated as
Notidanodon sp. in the main text. Later,
N. antarcti was considered a
nomen dubium and regarded as a junior synonym of
Notidanodon pectinatus.
