A new genus and species of Ptyctodont (Placodermi) from the Late Devonian Gneudna Formation, Western Australia, and an analysis of Ptyctodont phylogeny.
MetadataShow full item record
An almost complete but predominantly disarticulated ptyctodont fish, Kimbryanodus williamburyensis n. gen., n.sp. from the Late Devonian Gneudna Formation, is described. The fossils occur as three-dimensionally preserved isolated plates, and this has allowed the reconstruction of the fish. A taxonomic revision of the ptyctodonts was undertaken based on recently described Australian taxa and new reconstructions of Australian, American and European specimens. The phylogenetic analysis supports a threefold division of the ptyctodonts, with Rhamphodopsis being the most basal taxon and the other ptyctodonts divided into those possessing a median dorsal spine, spinal plate and simple V-shaped overlap of the anterior lateral and anterior dorsolateral plates and those taxa which do not.
Showing items related by title, author, creator and subject.
The potential of x-ray and synchrotron CT scanning in determining soft tissue anatomy in early vertebratesTrinajstic, Kate; Long, J. (2009)Vertebrate hard parts are potentially a rich source of informatio about the biology of the extinct animals. However, established techniques for studying vertebrate fossils recover only a small part of this information and ...
Trinajstic, Katherine; Boisvert, C.; Long, J.; Maksimenko, A.; Johanson, Z. (2015)Newly discovered pelvic and reproductive structures within placoderms, representing some of the most crownward members of the gnathostome stem group and the most basal jawed vertebrates, challenge established ideas on the ...
Long, J.; Mark-Kurik, E.; Johanson, Z.; Lee, M.; Young, G.; Min, Z.; Ahlberg, P.; Newman, M.; Jones, R.; den Blaauwen, J.; Choo, B.; Trinajstic, Katherine (2015)Reproduction in jawed vertebrates (gnathostomes) involves either external or internal fertilization1. It is commonly argued that internal fertilization can evolve from external, but not the reverse. Male copulatory claspers ...