M. S. Arkhangelsky
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View article: Callovian Marine Reptiles of European Russia
Callovian Marine Reptiles of European Russia Open
Our knowledge of marine reptiles of the Callovian age (Middle Jurassic) is majorly based on the collections from the Oxford Clay Formation of England, which yielded a diverse marine reptile fauna of plesiosaurians, ichthyosaurians, and tha…
View article: Thalattosuchian crocodylomorphs from European Russia, and new insights into metriorhynchid tooth serration evolution and their palaeolatitudinal distribution
Thalattosuchian crocodylomorphs from European Russia, and new insights into metriorhynchid tooth serration evolution and their palaeolatitudinal distribution Open
From the Middle Jurassic to the Early Cretaceous, metriorhynchid crocodylomorphs inhabited marine ecosystems across the European archipelago. Unfortunately, European metriorhynchids are only well known from Germany, France, and the UK, wit…
View article: MARINE FISHES (CHONDRICHTHYES, HOLOCEPHALI, ACTINOPTERYGII) FROM THE UPPER CRETACEOUS (CAMPANIAN) RYBUSHKA FORMATION NEAR BELOE OZERO, SARATOV OBLAST, RUSSIA
MARINE FISHES (CHONDRICHTHYES, HOLOCEPHALI, ACTINOPTERYGII) FROM THE UPPER CRETACEOUS (CAMPANIAN) RYBUSHKA FORMATION NEAR BELOE OZERO, SARATOV OBLAST, RUSSIA Open
A diverse fish paleofauna occurs in the upper Campanian portion of the Rybushka Formation exposed near Saratov city in the Saratov Oblast, Russia. Twenty taxa have been identified, including two holocephalans (Ischyodus bifurcatus and Amyl…
View article: A new elasmosaurid plesiosaurian from the Early Cretaceous of Russia marks an early attempt at neck elongation
A new elasmosaurid plesiosaurian from the Early Cretaceous of Russia marks an early attempt at neck elongation Open
Plesiosaurian marine reptiles evolved a wide range of body shapes during the Jurassic and Cretaceous, including long-necked forms. Many Late Cretaceous members of the clade Elasmosauridae epitomized this part of the plesiosaurian morpholog…
View article: Marine reptiles and climates of the Jurassic and Cretaceous of Siberia
Marine reptiles and climates of the Jurassic and Cretaceous of Siberia Open
All available data on the Jurassic and Cretaceous climates of Siberia, based on isotope, palaeontological and lithological markers are summarized. Late Pliensbachian cooling, early Toarcian warming, followed by late Toarcian to Middle Jura…
View article: A new Lower Cretaceous ichthyosaur from Russia reveals skull shape conservatism within Ophthalmosaurinae
A new Lower Cretaceous ichthyosaur from Russia reveals skull shape conservatism within Ophthalmosaurinae Open
Ophthalmosaurinae is a recently recognized clade of derived ichthyosaurs (marine reptiles) ranging from the Bajocian (Middle Jurassic) to the late Albian (late Early Cretaceous). Whereas the Middle-Late Jurassic ophthalmosaurine Ophthalmos…
View article: Simbirskiasaurus and Pervushovisaurus reassessed: implications for the taxonomy and cranial osteology of Cretaceous platypterygiine ichthyosaurs
Simbirskiasaurus and Pervushovisaurus reassessed: implications for the taxonomy and cranial osteology of Cretaceous platypterygiine ichthyosaurs Open
The ichthyosaur fossil record is interspersed by several hiatuses, notably during the Cretaceous. This hampers our understanding of the evolution and extinction of this group of marine reptiles during the last 50 million years of its histo…
View article: A new Barremian (Early Cretaceous) ichthyosaur from western Russia
A new Barremian (Early Cretaceous) ichthyosaur from western Russia Open
A new ophthalmosaurid ichthyosaur, Sveltonectes insolitus, gen. et sp. nov., is described from a sub-complete and three-dimensionally preserved specimen from the late Barremian of western Russia. This new taxon is supported by 11 cranial, …
View article: Evolution of the Cretaceous short-necked plesiosaurians
Evolution of the Cretaceous short-necked plesiosaurians Open
Plesiosauria is the most diverse and probably the most disparate clade of secondarily aquatic tetrapods. The adaptive landscape of plesiosaurians has been often summarised to two global morphotypes: one for short-necked forms (pliosauromor…
View article: Unexpected diversification of pliosaurid marine reptiles after the Jurassic-Cretaceous boundary
Unexpected diversification of pliosaurid marine reptiles after the Jurassic-Cretaceous boundary Open
Pliosaurids are iconic marine reptiles that dominated marine ecosystems during the Jurassic and the Cretaceous. These giant predators met their demise during the early Late Cretaceous but the final chapter of their long evolutionary histor…
View article: Peculiar macropredatory convergences in Cretaceous marine reptiles
Peculiar macropredatory convergences in Cretaceous marine reptiles Open
Colonization of ecological niches in the marine realm forced evolution of profound evolutionary convergences between several clades of tetrapods, with textbook examples regarding isodonty and body shape. Craniodental details have, however,…