Results 41 to 50 of about 191 (100)

Pelvic and reproductive structures in placoderms (stem gnathostomes)

open access: yes, 2014
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 origin of the pelvic girdle and ...
Boisvert, C.   +5 more
core   +1 more source

Étude anatomique des genres Kujdanowiaspis Stensiö 1942 et Erikaspis nov. gen. (Placodermi Arthrodira " Actinolepida ") du Dévonien inférieur de Podolie (Ukraine) (Nouvelle proposition de la phylogénie des Arthrodira)

open access: yes, 2003
Le statut phylogénétique des " Actinolepida " (Placodermi Arthrodira) demeurait ambigu. L'étude de matériel du Dévonien inférieur de Podolie (Ukraine) est prétexte à une analyse phylogénétique pour résoudre les relations de parenté entre les ...
DUPRET, Vincent, GOUJET, Daniel
core  

Atlantidosteus Lelievre 1984

open access: yes, 2003
Genus Atlantidosteus Lelièvre, 1984 REMARKS Lelièvre (1984a) defined his new genus on the following features of the SO plate: suborbital lamina strongly incurved in a medial direction; high postorbital lamina; ornamentation of very small tubercles ...
Young, Gavin C.
core   +1 more source

A new placoderm fish (Acanthothoraci) from the Early Devonian Jauf Formation (Saudi Arabia) [PDF]

open access: yes, 2011
peer reviewedAn exceptionally well-preserved new acanthothoracid (placoderm fish) presenting complete endocranium and skull roof, from Saudi Arabia (Qasr Limestone Member, Jauf Formation), Early Devonian in age, is described as Arabosteus variabilis n ...
Olive, Sébastien   +7 more
core   +1 more source

Reconstructing Dunkleosteus terrelli (Placodermi: Arthrodira): A new look for an iconic Devonian predator

open access: yesPalaeontologia Electronica
Engelman, Russell K. (2023): Reconstructing Dunkleosteus terrelli (Placodermi: Arthrodira): A new look for an iconic Devonian predator.
openaire   +2 more sources

Redescription of a Middle Devonian placoderm from Manitoba and comments on the polyphyly of Eastmanosteus (Arthrodira: Eubrachythoraci)

open access: yesJournal of Systematic Palaeontology
Arthrodires are the most common and diverse placoderms, an extinct group of early jawed vertebrates. Although commonly found, numerous taxa remain poorly known, thereby complicating the establishment of their taxonomic affinities. An excellent example of this is the genus Eastmanosteus: originally assigned to the wastebasket Dinichthys, it now ...
Jobbins, Melina   +3 more
openaire   +1 more source

Placodermi pražské pánve (spodní paleozoikum barrandienské oblasti)

open access: yes, 2010
Placodermi sa v pražskej panve nachádzajú výhradne na devónskych lokali- tách, datovaných od lochkova do givetu. Najbohatšou je lokalita Černá rokle pri Kosoři s faciami radotínskych vápencov.
Kašpar Vaškaninová, Valéria
core  

Revision of the Estonian Arthrodira. P. 1.: Family Homostiidae Jaekel

open access: yes, 1934
Digiteeritud Euroopa Regionaalarengu Fondi rahastusel, projekti "Eesti teadus- ja õppekirjandus" (2014-2020.12.03.21-0848) raames.https://www.ester.ee/record=b2001413 ...
Heintz, Anatol
core  

Data from: Evolutionary origins of teeth in jawed vertebrates: conflicting data from acanthothoracid dental plates (‘Placodermi’)

open access: yes, 2017
Placoderms (Devonian fossil fishes) are resolved phylogenetically to the base of jawed vertebrates and provide important evidence for evolutionary origins of teeth, particularly with respect to the Arthrodira. The arthrodires represent a derived group of
Meredith Smith, Moya   +3 more
core   +1 more source

The skull ofHagiangella goujetiJanvier, 2005, a high-crested acanthothoracid (Vertebrata, Placodermi) from the Lower Devonian of northern Vietnam

open access: yes, 2011
The acanthothoracid Hagiangella goujeti Janvier, 2005, has been described exclusively on the basis of isolatedthoracic plates from the Lochkovian (Lower Devonian) Khao Loc Formation of Tung Vai, Ha Giang Province, northernVietnam.
Ta Hoa Phuong   +11 more
core   +1 more source

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