THE FIRST RECORD OF THE ORECTOLOBIFORM SHARK GENUS CEDERSTROEMIA (ELASMOBRANCHII, ORECTOLOBIDAE) IN ASIA (KASHIMA FORMATION, UPPER CRETACEOUS; YUBARI AREA, HOKKAIDO, JAPAN)
| Autor: | MASAHIKO KANEKO, SERGEY V. SOLONIN |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | Rivista Italiana di Paleontologia e Stratigrafia, Vol 130, Iss 2 (2024) |
| Druh dokumentu: | article |
| ISSN: | 2039-4942 0035-6883 |
| DOI: | 10.54103/2039-4942/22195 |
| Popis: | We described fossil teeth assigned to the orectolobiform shark genus, Cederstroemia collected from the tuffaceous sandstone of the Kashima Formation (Santonian) in the Yubari area, Hokkaido, Japan. This is the first report of fossil remains of Cederstroemia from Asia. Due to the small number of specimens and their poor preservation, we left the studied material in open nomenclature as Cederstroemia sp. At the same time, the studied material may belong to a new previously undescribed morphology of Cederstroemia. The occurrence of Cederstroemia fossils in Japan indicates that this genus dispersed to the northwestern part of the Pacific Ocean in the Late Cretaceous, which considerably extends the range and previously known habitat of this genus. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|