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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.
Quetzalcoatlus (/ k ɛ t s əl k oʊ ˈ æ t l ə s /) is a genus of azhdarchid pterosaur that lived during the Maastrichtian age of the Late Cretaceous in North America. The type specimen, recovered in 1971 from the Javelina Formation of Texas, United States, consists of several wing fragments and was described as Quetzalcoatlus northropi in 1975 by Douglas Lawson.
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
A small scincomorph lizard with blunt teeth. Saurillodon [10] S. sp. Fruita Palaeontological Area, Colorado (Brushy Basin Member) A scincomorph lizard whose remains have been found in Middle Jurassic strata in England and Scotland as well as Late Jurassic strata in Portugal in addition to the Morrison formation remains. [31] Schillerosaurus [10 ...
Alamosaurus (/ ˌ æ l əm oʊ ˈ s ɔːr ə s /; [1] meaning "Ojo Alamo lizard") is a genus of titanosaurian sauropod dinosaurs containing a single known species, Alamosaurus sanjuanensis, from the Maastrichtian age of the Late Cretaceous period in what is now southwestern North America.
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 ...
The oldest known surviving tombstone in the United States is an elaborate display of wealth — an intricately carved slab of black limestone initially laid in the floor of the second church of ...
Seymouria is an extinct genus of seymouriamorph from the Early Permian of North America and Europe. [1] Although they were amphibians (in a biological sense), Seymouria were well-adapted to life on land, with many reptilian features—so many, in fact, that Seymouria was first thought to be a primitive reptile.