Posts Tagged ‘Russel T Sajeev’

WFS News: Evolution of the earliest dinosaurs

@WFS,World Fossil Society,Riffin T Sajeev,Russel T Sajeev Present knowledge of Late Triassic tetrapod evolution, including the rise of dinosaurs, relies heavily on the fossil-rich continental deposits of South America, their precise depositional histories and correlations. We report on an extended succession of the Ischigualasto Formation exposed in the Hoyada del Cerro Las Lajas (La Rioja, […]

WFS News: A new fossil reveals how a mysterious ancient insect captured its meals.

@WFS,World Fossil Society,Riffin T Sajeev,Russel T Sajeev Specialized Predation Drives Aberrant Morphological Integration and Diversity in the Earliest Ants Published:August 06, 2020DOI:https://doi.org/10.1016/j.cub.2020.06.106 Extinct haidomyrmecine “hell ants” are among the earliest ants known . These eusocial Cretaceous taxa diverged from extant lineages prior to the most recent common ancestor of all living ants and possessed bizarre […]

WFS News: Exceptionally small theropod eggs from Japan

@WFS,World Fossil Society,Riffin T Sajeev,Russel T Sajeev When most of us think of dinosaurs, we envision large, lumbering beasts, but these giants shared their ecosystems with much smaller dinosaurs, the smaller skeletons of which were generally less likely to be preserved. The fossilized egg shells of these small dinosaurs can shed light on this lost […]

WFS News: The first juvenile dromaeosaurid (Dinosauria: Theropoda) from Arctic Alaska

@WFS,World Fossil Society,Riffin T Sajeev,Russel T Sajeev Compared to the osteological record of herbivorous dinosaurs from the Late Cretaceous Prince Creek Formation of northern Alaska, there are relatively fewer remains of theropods. The theropod record from this unit is mostly comprised of isolated teeth, and the only non-dental remains known can be attributed to the […]

WFS News: 115-million-year-old fossil of new dinosaur species in Brazil

@WFS,World Fossil Society,Riffin T Sajeev,Russel T Sajeev A team of Brazilian researchers announced on Friday the discovery of a 115-million-year-old fossil belonging to a previously unknown species of dinosaur in the northeastern state of Ceara. The “Aratasaurus museunacionali” is a previously unknown species of the medium-sized theropods, meaning it had hollow bones and three-toed limbs. According to […]

WFS News: Exceptionally small theropod eggs from the Lower Cretaceous , Japan

@WFS,World Fossil Society,Riffin T Sajeev,Russel T Sajeev Exceptionally small theropod eggs from the Lower Cretaceous Ohyamashimo Formation of Tamba, Hyogo Prefecture, Japan Abstract The Kamitaki Locality in the Albian Ohyamashimo Formation in the eastern Hyogo Prefecture of southwestern Japan is among the richest Lower Cretaceous fossil egg sites in the world. So far, eggshells of […]

WFS News: Dry season limnological conditions and basin geology relationships with δ13C and δ15N of carbon sources

@WFS,World Fossil Society,Riffin T sajeev,Russel T Sajeev Dry season limnological conditions and basin geology exhibit complex relationships with δ13C and δ15N of carbon sources in four Neotropical floodplains Abstract Studies in freshwater ecosystems are seeking to improve understanding of carbon flow in food webs and stable isotopes have been influential in this work. However, variation […]

WFS News: Ancient submerged Aboriginal archaeological sites

@WFS,World Fossil Society,Riffin T Sajeev,Russel T sajeev Ancient submerged Aboriginal archaeological sites await underwater rediscovery off the coast of Australia, according to a study published July 1, 2020 in the open-access journal PLOS ONE by Jonathan Benjamin of Flinders University, Adelaide, Australia and colleagues. At the end of the Ice Age, sea level was much lower than […]

WFS News: Oldest Green Algae Fossil

@WFS,World Fossil Society,Riffin T Sajeev,Russel T Sajeev A  newly discovered fossil species of green algae indicates that photosynthesis originated in plants at least 1 billion years ago, paleobiologists reported in Nature Ecology & Evolution yesterday (February 24). The discovery of Proterocladus antiquus helps pinpoint what has been a very broad estimation of when the chlorophyte group of green algae, the relatives […]

WFS News: The Permian-Triassic extinction was directly responsible for disrupting ocean chemistry

@WFS,World Fossil Society,Riffin T Sajeev,Russel T Sajeev A new study shows for the first time that the collapse of terrestrial ecosystems during Earth’s most deadly mass extinction event was directly responsible for disrupting ocean chemistry. The international study, led by the University of Leeds, highlights the importance of understanding the inter-connectedness of ecosystems as our […]