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On the actinopterygian fish fauna (Upper Cretaceous: Campanian) from the Kristianstad Basin, southern Sweden.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
2014 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Actinopterygian remains have been recovered from Upper Cretaceous (uppermost lower to lowermost upper Campanian) marine strata of the Kristianstad Basin, southern Sweden. This is the first record of Upper Cretaceous bony fish from the Fennoscandian shield. The fauna consists of higher taxa including Pachycormiformes (Pachycormidae), Elopiformes (Pachyrhizodontidae), Pycnodontiformes (Pycnodontidae), Aulopiformes (Enchodontidae), Ichthyodectiformes (Ichthyodectidae), and indeterminable teleost fish. The ichthyofauna comprises a relative vast number of disarticulated meso-to macroscopic bony elements (e.g. vertebrae, isolated teeth, cycloid scales, coprolites, otolithes and fin spines). All major groups are so far only recognized by a few numbers of isolated dental remains suggesting major taphonomic losses prior to preservation. The total amount of recovered bony fish elements indicates the presence of a diverse teleostean/actinopterygian fauna, although taxonomic assessments of the material are severely hampered by the low preservational degree. In addition, previous works on the vertebrate assemblage of the Kristianstad Basin have resulted in major collection biases towards larger marine vertebrates which has led to an under-representation of the actinopterygian fauna. The ichthyofauna of the Kristianstad Basin bears compositional resemblance towards those in the North American Western Interior Seaway suggesting palaeobiogeographical communication.

Place, publisher, year, edition, pages
2014. , 44 p.
, Självständigt arbete, 88
Keyword [en]
Keyword [ar]
شعاعيات الزعانف
Keyword [sv]
Strålfeniga fiskar, Krita, Kristianstadbassängen, Åsen
National Category
Natural Sciences Geology
URN: urn:nbn:se:uu:diva-225788OAI: oai:DiVA.org:uu-225788DiVA: diva2:723364
Educational program
Bachelor Programme in Earth Science
2014-06-04, Hambergsalen, Institutionen för geovetenskaper, Villavägen 16, Uppsala, 11:00 (English)
Available from: 2014-06-10 Created: 2014-06-06 Last updated: 2014-07-14Bibliographically approved

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