Early Gnathostome Phylogeny Revisited: Multiple Method Consensus [PDF]
This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.A series of recent ...
A Pradel +149 more
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The extinct marine megafauna of the Phanerozoic. [PDF]
The modern marine megafauna is known to play important ecological roles and includes many charismatic species that have drawn the attention of both the scientific community and the public.
Pimiento C +35 more
europepmc +3 more sources
A well-preserved ‘placoderm’ (stem-group Gnathostomata) upper jaw from the Early Devonian of Mongolia clarifies jaw evolution [PDF]
The origin of jaws and teeth remains contentious in vertebrate evolution. ‘Placoderms’ (Silurian-Devonian armoured jawed fishes) are central to debates on the origins of these anatomical structures.
Ariunchimeg, Ya +7 more
core +1 more source
A right marginal plate (over 11 cm long) of Tityosteus cf. rieversae Gross, 1960, emend., has been found in the late part of the Early Emsian (late Zlichovian) in the Mariposas Fm. of the Eastern Iberian Cordillera in southern Aragón. The palaeoecological conditions correspond to a hemipelagic ensialic basin, with predominant elements of Hercynic ...
Elga Mark-Kurik, Peter Carls
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New information on Titanichthys (Placodermi, Arthrodira) from the Cleveland Shale (Upper Devonian) of Ohio, USA [PDF]
AbstractThe placoderm Titanichthys from the Late Devonian (Famennian) is based on incomplete and fragmentary specimens that have hindered understanding of its overall anatomy and phylogenetic relationships. A new, nearly complete, articulated specimen from the Upper Devonian Cleveland Shale provides new information about the previously undescribed ...
James Boyle, Michael J. Ryan
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Ornamentation of dermal bones of Placodermi from the Lower Devonian of Morocco as a measure of biodiversity [PDF]
Dermal bones are formed early during growth and thus constitute an important tool in studies of ontogenetic and evolutionary changes amongst early vertebrates.
Antczak, Mateusz, Berkowski, Błażej
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ABSTRACT A new species of the phlyctaeniid arthrodire genus Groenlandaspis from the upper Famennian of Belgium is described. The remains of Groenlandaspis potyi, sp. nov., consist of dissociated thoracic armor elements, but the specimen designated to be the holotype displays the median dorsal, anterior, and posterior dorsolateral plates in articulation.
Olive, Sébastien +2 more
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Der rest eines actinolepididen placodermen (Pisces) aus der bohrung bolland (emsium, Belgien) [PDF]
A small arctolepidid arthrodire of the subfamily Actinolepidinae is described f r om the Lower Emsium of the drilling Bolland near Liege/Belgium. The new genus resembles most A ctinolepis but differs from that genus and other Actinolepidinae in the shape
Schmidt, W.
core
Redescription of Szelepis Liu, 1981 (Placodermi, Arthrodira), from the Lower Devonian of China
ABSTRACTThe skull roof of the species Szelepis yunnanensis (Liu, 1979) from the Early Devonian of Yunnan is redescribed, as well as other Szelepis material previously published. It appears that only the holotype of S. yunnanensis can be confidently assigned to this genus.
Vincent Dupret, Min Zhu, Jun-Qing Wang
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Première découverte d'un Arthrodire (Placodermi, Vertebrata) dans le Dévonien d'Amérique du Sud [PDF]
Des plaques dermiques d'un grand Arthrodire eubrachyhtoracide (Placodermi, Vertebrata), provisoirement attribuées à un Dunkleosteidae, ont été découvertes dans les faciès détritique de la Formation de Colpacucho (Famennien), sur la Péninsule de Cumana ...
Diaz Martinez, Enrique +3 more
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