N. Rybczynski

Publications54
h-index18
Citations1,177
Highly Influential Citations97
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Mid-Pliocene warm-period deposits in the High Arctic yield insight into camel evolution
TLDR
The results suggest that the evolutionary history of modern camels can be traced back to a lineage of giant camels that was well established in a forested Arctic, consistent with the presence of a rich, boreal-type forest.
A semi-aquatic Arctic mammalian carnivore from the Miocene epoch and origin of Pinnipedia
TLDR
The discovery of a nearly complete skeleton of a new semi-aquatic carnivore from an early Miocene lake deposit in Nunavut, Canada that represents a morphological link in early pinniped evolution suggests that the evolution of pinnipeds included a freshwater transitional phase, and may support the hypothesis that the Arctic was an early centre of pinnacleiped evolution.
Castorid Phylogenetics: Implications for the Evolution of Swimming and Tree-Exploitation in Beavers
  • N. Rybczynski
  • Environmental Science
    Journal of Mammalian Evolution
  • 5 February 2007
TLDR
Results support the hypothesis that tree-exploitation evolved at high latitudes, possibly influenced by the development of hard winters, and suggest that both behaviors appeared within a single castorid lineage by the beginning of the Miocene.
Cranial anatomy and phylogenetic position of Suminia getmanovi, a basal anomodont (Amniota: Therapsida) from the Late Permian of Eastern Europe
TLDR
A cladistic analysis suggests that a «dicynodont-type» masticatory architecture, with an expanded adductor musculature and sliding jaw articulation, may have originated prior to the advent of the (Venyukovioidea+( Galeops +Dicynadontia)) clade.
Significantly warmer Arctic surface temperatures during the Pliocene indicated by multiple independent proxies
Temperatures in the Arctic have increased by an astounding 1 °C in response to anthropogenic forcing over the past 20 years and are expected to rise further in the coming decades. The Pliocene…
Estimates of Arctic land surface temperatures during the early Pliocene from two novel proxies
Pliocene Arctic temperature constraints from the growth rings and isotopic composition of fossil larch
Climate variability in the Early Pliocene Arctic: Annually resolved evidence from stable isotope values of sub-fossil wood, Ellesmere Island, Canada
Early Pliocene fish remains from Arctic Canada support a pre-Pleistocene dispersal of percids (Teleostei: Perciformes)
Percid remains from Pliocene deposits on Ellesmere Island, Arctic Canada, are identified as a species of Sander, similar to the walleye and sauger of North America and the pike-perch of Europe and…
Kinetic Limitations of Intracranial Joints in Brachylophosaurus canadensis and Edmontosaurus regalis (Dinosauria: Hadrosauridae), and Their Implications for the Chewing Mechanics of Hadrosaurids
TLDR
The intracranial joint morphology is described for both Brachylophosaurus canadensis and Edmontosaurus regalis and their permissive kinematics are established and the movements associated with pleurokinesis are not accommodated in these hadrosaurine dinosaurs.
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