Ottawa [Canada], February 17 (ANI): As per a study driven by McGill University, researchers have discovered impacts of Ice Age sea-level changes in the genomes of Caribbean and Pacific crocodiles in Panama.
Crocodile evolution rebooted by Ice Age glaciations
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Researchers discover impacts of Ice Age sea level changes in the genomes of Caribbean and Pacific crocodiles in Panama
Published: 16Feb2021
Image by José Avila-Cervantes.
Crocodiles are resilient animals from a lineage that has survived for over 200 million years. Skilled swimmers, crocodiles can travel long distances and live in freshwater or marine environments. But they can’t roam far on land. American crocodiles (
Crocodylus acutus) are found in the Caribbean and Pacific coasts of the Neotropics but they arrived in the Pacific before Panama existed, according to researchers from McGill University.
Over 3 million years ago, the formation of the Isthmus of Panama altered global ocean circulation, connecting North and South America and establishing the Caribbean Sea. This resulted in widespread mixing of species on the continent and separation in the seas. On land, mammals from North America such as ma
Research Article
Multidisciplinary discovery of ancient restoration using a rare mud carapace on a mummified individual from late New Kingdom Egypt
Karin Sowada , Roles Conceptualization, Data curation, Funding acquisition, Investigation, Methodology, Project administration, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing Roles Conceptualization, Formal analysis, Investigation, Methodology, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing
Affiliations Department of History and Archaeology, Macquarie University, Sydney, New South Wales, Australia, McDonald Institute for Archaeological Research, Department of Archaeology, University of Cambridge, Cambridge, United Kingdom ⨯
Geraldine Jacobsen, Roles Formal analysis, Investigation, Resource
Discovery of new praying mantis species from the time of the dinosaurs
A McGill-led research team has identified a new species of praying mantis thanks to imprints of its fossilized wings. It lived in Labrador, in the Canadian Subarctic around 100 million years ago, during the time of the dinosaurs, in the Late Cretaceous period. The researchers believe that the fossils of the new genus and species
, Labradormantis guilbaulti, helps to establish evolutionary relationships between previously known species and advances the scientific understanding of the evolution of the most ‘primitive’ modern praying mantises. The unusual find, described in a recently published study in
Researchers have identified a new species of praying mantis thanks to imprints of its fossilized wings.
It lived in Labrador, in the Canadian Subarctic around 100 million years ago, during the time of the dinosaurs, in the Late Cretaceous period.
Artist’s interpretation of
Labradormantis guilbaulti in liftoff among the leaves of a sycamore tree in Labrador around 100 million years ago. (Credit: A. Demers-Potvin/McGill)
The researchers believe that the fossils of the new genus and species,
Labradormantis guilbaulti, helps to establish evolutionary relationships between previously known species and advances the scientific understanding of the evolution of the most “primitive” modern praying mantises. The unusual find, which appears in the journal