Results 151 to 160 of about 1,690 (206)

The Silurian Placoderms from Vietnam: A Reappraisal Based on the Consideration of Silurian “Maxillate Placoderms” from South China

Paleontological Journal
P. Janvier
exaly   +3 more sources

The relationship of placoderms

Journal of Vertebrate Paleontology, 1984
ABSTRACT A review of the evidence suggests that placoderms are more closely related to osteichthyans than chondrichthyans. A new phylogeny of placoderms is proposed in which the ptyctodonts are considered the collateral descendants of all other placoderms.
B. Gardiner
exaly   +3 more sources

New Early Devonian (late Emsian) placoderms from Belarus

Journal of Paleontology, 2020
. Four placoderm fishes are described from the Lepel Beds of the Vitebsk Regional Stage of the Lower Devonian (upper Emsian) of Belarus. Two forms are new (Stipatosteus svidunovitchi new genus, new species and Actinolepis zaikai new species) and the ...
D. Plax, M. Newman
semanticscholar   +2 more sources

Middle-late devonian placoderms (Pisces: Antiarchi) from Central and northern Asia

Paleontological Journal, 2012
S. Moloshnikov
exaly   +2 more sources

MIDDLE DEVONIAN COCCOSTEID PLACODERMS FROMTHE VORONEZH REGION (GIVETIAN OF THE PAVLOVSK QUARRY) BY MATERIALS IN THE COLLECTION OF EARTH SCIENCE MUSEUM

THE LIFE OF THE EARTH, 2022
Remains of coccosteid placoderm fishes (Placodermi: Euarthrodira: Coccosteidae) from the Ardatovka Beds (Givetian, Middle Devonian) of the Pavlovsk Quarry, Voronezh Region (the territory of the Central Devonian field) are briefly described. This material
S. Moloshnikov
semanticscholar   +1 more source

The Preorbital Depression and Recess of Antiarch Placoderms (Jawed Stemgnathostomes) Revisited From an Ontogenetic (Saltatory) Point of View

Journal of Vertebrate Paleontology, 2022
During fish growth, short periods of rapid changes (morphological, behavioral, physiological, ecological), or thresholds, are interspersed with longer periods of slower development, the steps.
France Charest, Z. Johanson, R. Cloutier
semanticscholar   +1 more source

Origin and evolution of gnathostome dentitions: a question of teeth and pharyngeal denticles in placoderms

Biological Reviews, 2005
Zerina Johanson
exaly   +2 more sources

Palaeoichthyology: Gogo Placoderms

Nature, 1972
exaly   +2 more sources

FINDS OF THE DUNKLEOSTEID PLACODERMS (PISCES, PLACODERMI) IN THE EUROPEAN PART OF RUSSIA (CENTRAL DEVONIAN FIELD)

, 2021
The Dunkleosteidae Stensiö family includes large predatory Paleozoic armour fishes. Their remains are rare in the Devonian deposits of the European part of Russia (Central Devonian field).
S. Moloshnikov
semanticscholar   +1 more source

Devonian Placoderm Scales from Australia

Journal of Vertebrate Paleontology, 1998
The morphology and histology of Australian placoderm scales which were found associated with dermal plates are described and compared. The specimens include the arthrodire Buchanosteus confertituberculatus from the Early Devonian (Emsian) of Buchan, Victoria, the arthrodires Goodradigbeeon australianium and Buchanosteidae gen. et sp.
Burrow C.J., Turner S.
openaire   +2 more sources