Mesozoic Biotas of Scandinavia and its Arctic Territories

Scandinavia and its Arctic territories of Svalbard and Greenland represent geographical regions with a long history of Mesozoic palaeontology. However, the last few decades have witnessed a surge of new discoveries. Especially famous are the Triassic and Late Jurassic Lagerstätten of East Greenland and Spitsbergen in the Svalbard Archipelago, together with the Late Cretaceous strata of southern Sweden and the UNESCO World Heritage locality at Stevns Klint in Denmark. The latter records one of the most complete terminal Mesozoic rock successions known globally. Collectively, these deposits encompass the spectrum of Mesozoic biotic evolution, including the explosive radiation of marine faunas after the Permian–Triassic extinction, seminal specialization of amniotes for life in the sea, Late Triassic–Jurassic domination of the land by dinosaurs and the Cretaceous development of modern terrestrial floras and marine ecosystems. This volume, authored by leading experts in the field, encapsulates key aspects of the latest research and will provide a benchmark for future investigations into the Scandinavian Mesozoic world.
Early Campanian (Late Cretaceous) squatiniform and synechodontiform selachians from the Åsen locality, Kristianstad Basin, Sweden
-
Published:January 01, 2016
-
CiteCitation
M. Siversson, T. D. Cook, P. Cederström, H. E. Ryan, 2016. "Early Campanian (Late Cretaceous) squatiniform and synechodontiform selachians from the Åsen locality, Kristianstad Basin, Sweden", Mesozoic Biotas of Scandinavia and its Arctic Territories, B. P. Kear, J. Lindgren, J. H. Hurum, J. Milàn, V. Vajda
Download citation file:
- Share
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.
- assemblages
- biostratigraphy
- Campanian
- Chondrichthyes
- Chordata
- Cretaceous
- dentition
- Elasmobranchii
- Europe
- fossil localities
- holotypes
- Invertebrata
- Kristianstad Sweden
- lower Campanian
- mangrove swamps
- Mesozoic
- mires
- morphology
- paleoecology
- paratypes
- phylogeny
- Pisces
- preservation
- Scandinavia
- Selachii
- shore features
- Skane Sweden
- species diversity
- swamps
- Sweden
- taxonomy
- teeth
- Upper Cretaceous
- Vertebrata
- Western Europe
- Squatina
- Squatinidae
- Synechodus
- Squatiniformes
- Palaeospinacidae
- Asen Sweden
- Synechodontiformes
- Synechodus filipi
- Squatina lundegreni
- Squatina fortemordeo