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Oct. 5, 2020 —North American mammals were the winners when the North and South American continents collided millions of years ago. New research shows that South American mammals went extinct at a ...
Aug. 9, 2022 —Spinosaurid dinosaurs were able to develop up to three generations of teeth at the same time, a high replacement rate that explains why so many teeth of this type have been found in Cretaceous ...
July 27, 2022 —Fossils of small plesiosaurs, long-necked marine reptiles from the age of dinosaurs, have been found in a 100-million year old river system that is now Morocco's Sahara Desert. This discovery ...
Jan. 13, 2021 —Researchers find that the evolution of teeth in the giant prehistoric shark Megalodon and its relatives was a by-product of becoming huge, rather than an adaptation to new feeding ...
Sep. 8, 2021 —Where skeletons are rare, isolated teeth can flesh out our understanding of ancient reptile-dominated ecosystems, according to a new ...
July 25, 2022 —Larger fishes are more likely to experience oxygen deficiency in warming water than smaller species. The same applies to fish with large cells, note researchers. In addition, marine fishes are less ...
June 8, 2022 —As the cherished rainforest in South America's Amazon River region continues to shrink, the river itself now presents evidence of other dangers: the overexploitation of freshwater ...
Oct. 7, 2021 —Researchers have discovered an individual Eleotris oxycephala in Akita Prefecture, Japan, which is the northernmost record of this species. The juvenile was discovered in the Yoneshiro River system ...
Nov. 29, 2021 —Snow monkeys living in one of the world's coldest regions survive by 'going fishing' -- scooping live animals, including brown trout, out of Japanese rivers and eating them to stay ...
Mar. 9, 2021 —By closely examining the jaw mechanics of juvenile and adult tyrannosaurids, some of the fiercest dinosaurs to inhabit earth, scientists have uncovered differences in how they bit into their ...
