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The first fully terrestrial vertebrates were reptilian amniotes — their eggs had internal membranes that allowed the developing embryo to breathe but kept water in. This allowed amniotes to lay eggs on dry land, while amphibians generally need to lay their eggs in water (a few amphibians, such as the common Suriname toad, have evolved other ways of getting around this limitation).
Maelestes is a prehistoric shrew-like mammal discovered in 1997 in the Gobi Desert.The animal lived in the late Cretaceous Period, around 71–75 million years ago, and was a contemporary of dinosaurs such as Velociraptor and Oviraptor.
From Eucynodontia came the first mammals. Most early mammals were small shrew-like animals that fed on insects and had transitioned to nocturnality to avoid competition with the dominant archosaurs — this led to the loss of the vision of red and ultraviolet light (ancestral tetrachromacy of vertebrates reduced to dichromacy).
The Mt. Lyell shrew, a mouse-like mammal that lives in the central Sierra Nevada, has never been photographed in the 100 years since it was discovered. It took three industrious college students ...
Eulipotyphla (/ ˌ j uː l ɪ p oʊ ˈ t ɪ f l ə /, from eu-+ Lipotyphla, meaning truly lacking blind gut [1]; sometimes called true insectivores [2]) is an order of mammals comprising the Erinaceidae (hedgehogs and gymnures); Solenodontidae (solenodons); Talpidae (moles, shrew-like moles and desmans); and Soricidae (true shrews) families.
The discovery of a newly identified species — the oldest saber-toothed animal found and an ancient cousin to mammals — fills a longstanding gap in the fossil record. ... were more like a ...
One of the denizens of this challenging landscape was a squat, vaguely pig-like mammal forerunner named Gordonia, with a pug face and two tusks protruding from beaked jaws. Using high-resolution ...
Batodonoides vanhouteni is an extinct shrew-like mammal, thought to be the smallest mammal that ever lived, as well as the smallest synapsid that ever lived. Based on the size of its molar teeth, it is estimated that Batodonoides vanhouteni weighed only 0.93–1.82 g (0.03–0.06 oz) (with 1.3 g (0.05 oz) most likely).