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Science
Megalodon’s body size and shape reveal why certain aquatic vertebrates can achieve giants
Modified interim body outline for Otodus Megalodon, an extinct megatooth shark, at 24.3 meters (80 feet). Important notes: 1) The exact shape, size, and location of most fins remain unknown based on current fossil records. 2) Adult humans (Homo Sapiens) are drawn for size comparisons, but it must be emphasized that the two species do not coexist. Credit: Shimada En/DePaul…
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Biology
The size of the teeth of South American sea lions reflects historical changes in population abundance
Credit: Ilyn Sosa Druville A new study published in Peerj reveals that the teeth of South American sea lions (Otaria Byronia) have valuable clues on past population dynamics. Researchers from the Instituto de Biología de Organismos Marinos, the Centro para el Estudio de Sistemas Marinos, and the Universidad Nacional de la Patagonia San Juan Bosco analyzed changes in tooth size…
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Earth
Scientists reveal the evolutionary history of regions of the deep mantle continent size
Visualization of the seismic model S40RTS (Ritsema et al., 2011) showing African LLVPs (big red regions) created using Gplates software (Ritsema et al., 2011). Credit: Jeroen Ritsema et al. New research reveals that two continent-sized regions of the Earth’s deep mantle have distinctive history and resulting chemical composition, in contrast to the general assumption that they are the same. The…
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Science
Grasshoppers size shift reveals the winners and losers of the climate change.
Colora Drocky Mountains, a typical glass hopper, Melano Plus Ball Lencis. Credit: Thomas Nuff, 2022 As the number of insects’ groups called “apocalypse of insects” decreases around the world, biologists judge how six -legged creatures react to the world of global warming, and long -term winners. I am desperate to predict the loser. A new study by Coloradographic Hopper shows…
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Biology
Not too big, not too small: Why it’s the ideal size for modern people to speed up.
The speed and size pattern of running animals (blue) shows that intermediate-sized species (such as cheetahs) are usually the fastest. Resizing the computer-generated human model (right) from a mouse to a horse (orange dots) shows the same pattern, revealing the underlying biomechanical reasons. Credit: Nature Communications (2024). DOI: 10.1038/s41467-024-52924-z The fastest animal on land is the cheetah, which can reach…
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