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Hylonomus (/ h aɪ ˈ l ɒ n əm ə s /; hylo-"forest" + nomos "dweller") [2] is an extinct genus of reptile that lived during the Bashkirian stage of the Late Carboniferous.It is the earliest known crown group amniote and the oldest known unquestionable reptile, with the only known species being Hylonomus lyelli.
Studies in other Sauropsida have recognized a similar number but nevertheless, in the genome of the tuatara it has been found a very old clade of retrovirus known as Spumavirus. [ 62 ] More than 8,000 non-coding RNA -related elements have been identified in the tuatara genome, of which the vast majority, about 6,900, are derived from recently ...
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. [16] In 2011, tardigrades went on the International Space Station STS-134 , [ 17 ] showing that they could survive microgravity and cosmic radiation , [ 18 ] [ 19 ] and should be suitable model ...
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.
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 mammals — fills a longstanding gap in the fossil record.
Nyasasaurus (meaning "Lake Nyasa lizard") is an extinct genus of avemetatarsalian archosaur from the putatively Middle Triassic Manda Formation of Tanzania that may be the earliest known dinosaur. The type species Nyasasaurus parringtoni was first described in 1956 in the doctoral thesis of English paleontologist Alan J. Charig , but it was not ...
The well-preserved remains of Bellairsia gracilis were discovered in the Isle of Skye in 2016.