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Arctotirolites
''Arctotirolites'' is an extinct genus of cephalopod belonging to the ammonite subclass. It was described by Popov in 1963, based on a single specimen found in the Olenyok River The Olenyok (russian: Оленёк, sometimes spelled ''Оленек'', ''Olenek''; sah, Өлөөн, Ölöön) is a major river in northern Siberian Russia, west of the lower Lena and east of the Anabar. It is long, of which around is navigable. ... basin, in the Olenikites zone of northern Siberia. References Ceratitida genera Xenodiscidae {{Ceratitida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yuri N
Yuri may refer to: People and fictional characters Given name *Yuri (Slavic name), the Slavic masculine form of the given name George, including a list of people with the given name Yuri, Yury, etc. *Yuri (Japanese name), also Yūri, feminine Japanese given names, including a list of people and fictional characters *Yu-ri (Korean name), Korean unisex given name, including a list of people and fictional characters Singers *Yuri (Japanese singer), vocalist of the band Move *Yuri (Korean singer), member of Girl Friends *Yuri (Mexican singer) *Kwon Yu-ri, member of Girls' Generation Footballers *Yuri (footballer, born 1982), full name Yuri de Souza Fonseca, Brazilian football forward *Yuri (footballer, born 1984), full name Yuri Adriano Santos, Brazilian footballer * Yuri (footballer, born 1986), full name Yuri Vera Cruz Erbas, Brazilian footballer * Yuri (footballer, born 1989), full name Yuri Naves Roberto, Brazilian football defensive midfielder * Yuri (footballer, born 1990), ful ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ammonite
Ammonoids are a group of extinct marine mollusc animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs, commonly referred to as ammonites, are more closely related to living coleoids (i.e., octopuses, squid and cuttlefish) than they are to shelled nautiloids such as the living ''Nautilus'' species. The earliest ammonites appeared during the Devonian, with the last species vanishing during the Cretaceous–Paleogene extinction event. Ammonites are excellent index fossils, and linking the rock layer in which a particular species or genus is found to specific geologic time periods is often possible. Their fossil shells usually take the form of planispirals, although some helically spiraled and nonspiraled forms (known as heteromorphs) have been found. The name "ammonite", from which the scientific term is derived, was inspired by the spiral shape of their fossilized shells, which somewhat resemble tightly coiled rams' horns. Pliny the Elder ( 79 AD near Pomp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olenyok River
The Olenyok (russian: Оленёк, sometimes spelled ''Оленек'', ''Olenek''; sah, Өлөөн, Ölöön) is a major river in northern Siberian Russia, west of the lower Lena and east of the Anabar. It is long, of which around is navigable. Average water discharge is . The Olenyok is known for its abundance in fish. It is frozen for over eight months every year and the climate in its area is harsh because of the direct influence of the Arctic. History In 1633 Ivan Rebrov reached the Olenyok from the Lena delta and built a fort. In 1642–44 Rebrov and Fedot Alekseyev Popov reached the river but were driven out by the natives. Pioneering Russian Arctic explorer Vasili Pronchishchev and his wife Tatiana (Maria) died of scurvy in the area of the river in September 1736, while mapping the coasts of the Laptev Sea. After their deaths, husband and wife were interred at Ust-Olenyok, near the mouth of the Olenyok. Their tomb was moved after the bodies were exhumed in 1999. In 195 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceratitida Genera
Ceratitida is an order that contains almost all ammonoid cephalopod genera from the Triassic as well as ancestral forms from the Upper Permian, the exception being the phylloceratids which gave rise to the great diversity of post Triassic ammonites. Ceratitids overwhelmingly produced planospirally coiled discoidal shells that may be evolute with inner whorls exposed or involute with only the outer whorl showing. In a few later forms the shell became subglobular, in others, trochoidal or uncoiled. Sutures are typically ceratitic, with smooth saddles and serrate or digitized lobes. In a few the sutures are goniatitic while in others they are ammonitic. Taxonomy * Ceratitida **Ceratitoidea **Choristoceratoidea **Clydonitoidea **Danubitoidea **Dinaritoidea ** Lobitoidea ** Meekoceratoidea ** Megaphyllitoidea ** Nathorstitoidea **Noritoidea **Otoceratoidea **Pinacoceratoidea **Ptychitoidea ** Sageceratoidea **Tropitoidea **Xenodiscoidea Only eight superfamilies are shown i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
