uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
A near-tetrapod from the Baltic Middle Devonian
Natural History Museum of London .
2000 (English)In: Palaeontology, ISSN 0031-0239, E-ISSN 1475-4983, Vol. 43, 533-548 p.Article in journal (Refereed) Published
Abstract [en]

The tetrapodomorph sarcopterygian Livoniana multidentata gen. et sp. nov, is described on the basis of lower jaw fragments from the Middle Devonian (late Givetian) of Latvia and Estonia. It possesses a suite of derived characters previously only known fromtetrapods, which first appear in the late Devonian (late Frasnian), and a phylogenetic analysis places it on the internode between Panderichthys and the base of the Tetrapoda.The analysis also reveals that the 'Elpistostegalia' are paraphyletic to Tetrapoda, with Elpistostege closer to tetrapods than is Panderichthys. Owing to incompleteness of thematerial, there is almost no overlap between the data sets for Elpistostege and Livoniana;the analysis places the two genera in an unresolved trichotomy. In addition to the tetrapodfeatures, Livoniana has a strikingly autapomorphic dentary dentition comprising multiple tooth rows. It thus provides evidence both for the unexpectedly early evolution of tetrapodcharacteristics and for morphological radiation around the fish-tetrapod transition.

Place, publisher, year, edition, pages
2000. Vol. 43, 533-548 p.
National Category
Natural Sciences
URN: urn:nbn:se:uu:diva-105823DOI: 0.1111/j.0031-0239.2000.00138.xISI: 000089659600006OAI: oai:DiVA.org:uu-105823DiVA: diva2:222567
Available from: 2009-06-09 Created: 2009-06-09 Last updated: 2013-06-20Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Ahlberg, Per E.
In the same journal
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 160 hits
ReferencesLink to record
Permanent link

Direct link