Early Campanian (Late Cretaceous) squatiniform and synechodontiform selachians from the Åsen locality, Kristianstad Basin, Sweden

M. Siversson, Todd Donald Cook, P. Cederström, H. E. Ryan

Research output: Chapter in Book/Report/Conference proceedingChapter

14 Scopus citations

Abstract

The latest early Campanian archipelago deposits of the Kristianstad Basin, southern Sweden, yield one of the most diverse Cretaceous chondrichthyan faunas collected from a narrow stratigraphical interval. Building on previous descriptions of various selachians, squatiniform and synechodontiform sharks are added to the faunal list. Squatinidae is represented by Squatina (Squatina) lundegreni sp. nov. and Squatina (Squatina) fortemordeo sp. nov. The poorly preserved type specimens of the nominal Squatina hassei from the Maastrichtian of The Netherlands were recently regarded conspecific with better preserved Santonian-Maastrichtian teeth of Squatina (Cretascyllium) from the Anglo-Paris Basin. This appears to have been based largely on the assumption that the nominal S. hassei was the only Squatina present in NW Europe during the Santonian- Maastrichtian. The Swedish material indicates a greater diversity of squatinoids, and the nominal S. hassei is here regarded as a nomen dubium of uncertain subgeneric affinity. Two types of synechodontid teeth with a tall central cusp co-occur in the Campanian of the Kristianstad Basin. Based on articulated jaws of the markedly dignathic S. dubrisiensis from the Cenomanian of England, the two morphs are regarded as upper and lower anterior teeth of the single species S. filipi sp. nov.

Original languageEnglish (US)
Title of host publicationGeological Society Special Publication
PublisherGeological Society of London
Pages251-275
Number of pages25
Edition1
DOIs
StatePublished - Jan 1 2016

Publication series

NameGeological Society Special Publication
Number1
Volume434
ISSN (Print)0305-8719

All Science Journal Classification (ASJC) codes

  • Water Science and Technology
  • Ocean Engineering
  • Geology

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