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The space vacuum did not much affect egg-laying in either R. coronifer or M. tardigradum, whereas UV radiation reduced egg-laying in M. tardigradum. [17] In 2011, tardigrades went on the International Space Station STS-134 , [ 18 ] showing that they could survive microgravity and cosmic radiation , [ 19 ] [ 20 ] and should be suitable model ...
Lystrosaurus (/ ˌ l ɪ s t r oʊ ˈ s ɔːr ə s /; 'shovel lizard'; proper Greek is λίστρον lístron ‘tool for leveling or smoothing, shovel, spade, hoe’) is an extinct genus of herbivorous dicynodont therapsids from the late Permian and Early Triassic epochs (around 248 million years ago).
The oldest undisputed lizards date to the Middle Jurassic, from remains found In Europe, Asia and North Africa. [53] Lizard morphological and ecological diversity substantially increased over the course of the Cretaceous. [54] In the Palaeogene, lizard body sizes in North America peaked during the middle of the period. [55]
The discovery of a newly identified species — the oldest saber-toothed animal found and an ancient cousin to ... Called gorgonopsians, the earliest animals in this lineage have long been missing ...
One found in a Pleistocene squirrel burrow in the Duvanny Yar outcrop on the Kolyma River was believed to be about 32,000 years old, while the other, recovered in 2015 near the Alazeya River, was dated at approximately 30,000-40,000 years old. These nematodes were believed to be the oldest living multicellular organisms on Earth.
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They are found in some lizards, where they are mostly made of cartilage, as well as crocodiles and the tuatara, and are not attached to the spine or thoracic ribs. The true ribs are small projections, with small, hooked bones, called uncinate processes, found on the rear of each rib. [54] This feature is also present in birds.
Basilosaurus (meaning "king lizard") is a genus of large, predatory, prehistoric archaeocete whale from the late Eocene, approximately 41.3 to 33.9 million years ago (mya). ). First described in 1834, it was the first archaeocete and prehistoric whale known to scienc