Extinct Giant Sloths Had Vegetarian Diet, Study Shows

Giant sloths, massive animals that lived in the Americas during the Ice Age, subsisted on an exclusively plant-based diet, according to an isotopic analysis of bones reported in the journal Gondwana Research. Megatherium sloths. Image credit: Robert Bruce Horsfall. Sloths may well rank among the world’s most peculiar animals: with …

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Blood-Engorged Tick Found in Dominican Amber

A blood-engorged nymphal tick of the genus Amblyomma surrounded by fossilized mammalian erythrocytes (red blood cells) has been discovered in a piece of 15-45-million-year-old amber. The discovery is reported March 20 in the online edition of the Journal of Medical Entomology. This blood-engorged nymphal hard tick Amblyomma sp. (length – …

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