Scutellosaurus, genus of small ornithischian dinosaurs from the Early Jurassic Period (roughly 200 million to 176 million years ago) characterized by the presence of small scutes along the back and sides of the body.
Methane burp hypothesis, also called gas hydrate dissociation hypothesis, in oceanography and climatology, an explanation of the sudden onset of the Paleocene-Eocene Thermal Maximum (PETM), an interval of geologic time roughly 55 million years ago characterized by the highest global temperatures of the Cenozoic Era (65 million years ago to the present).
USC, years ago characterized as a football factory that held occasional classes, had become a great academic institution.
Pleuromeia, genus of extinct lycopsid plants from the Triassic Period (about 251 million to 200 million years ago) and characterized by an unbranched trunk up to 2 metres (6.6 feet) tall.
The Archean Eon was preceded by the Hadean Eon, an informal division of geologic time spanning from 4.6 billion to 4 billion years ago and characterized by Earth's initial formation.
A few weeks ago, I characterized Obama-era liberalism as featuring "an imperial presidency, a corporatist economic policy, and then a libertarian turn on almost every social issue," and while that line misses various nuances and complexities, as one-sentence summaries go I think it's pretty good.
The Proterozoic Eon (2.5 billion to about 541 million years ago) is characterized by the formation of several mobile belts, which are long, narrow zones of strongly deformed and metamorphosed rocks that occur between the cratons and probably resulted from the collision between the cratons due to plate tectonic processes.
The emergence of angiosperms more than 180 million years ago is characterized by the acquisition of three dispersal units (seed, fruit, infructescence) subject to evolutionary change, and thus to favour morphological differentiation into multiple LDD syndromes.
Mr. Schumer proceeded down the Eastern Parkway bike path, which was rebuilt about five years ago and is characterized by beautiful shade trees.
Acheulean industry appeared during the Early Stone Age (c. 2,500,000 to 150,000 years ago) and was characterized by the use of simple stone hand axes, choppers, and cleavers.
The late Proterozoic (about 1 billion to 541 million years ago) is again characterized by platform deposits in stable areas, such as the West African craton (Taoudeni and Tindouf basins), the Congo craton, the Kalahari craton (Nama basin of Namibia), and the Tanzania craton (Bukoban beds).
