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Asteroceras
''Asteroceras'' is an extinct genus of cephalopod belonging to the Ammonite subclass. These fast-moving nektonic carnivores lived during the Triassic and Jurassic periods (from 205.6 to 189.6 Ma). Species *''Asteroceras blakei'' Spath, 1925 *''Asteroceras confusum'' Spath, 1925 *''Asteroceras obtusum'' (Sowerby, 1817) *''Asteroceras reynesi'' Fucini, 1903 *''Asteroceras saltriensis'' Parona, 1896 *''Asteroceras smithii'' (Sowerby, 1814) *''Asteroceras stellare'' (Sowerby 1815) *''Asteroceras turneri'' (Sowerby, 1814) Paleobiology Database - Asteroceras 2014-05-29. Distribution ''Asteroceras'' fossils may be found in the Jurassic marine strata of Canada, China, Germany, Hong Kong, Hungary, Peru, and Turkey, in the Triassic of United States an ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asteroceras Smithii
''Asteroceras'' is an extinct genus of cephalopod belonging to the Ammonite subclass. These fast-moving nektonic carnivores lived during the Triassic and Jurassic periods (from 205.6 to 189.6 Ma). Species *''Asteroceras blakei'' Spath, 1925 *''Asteroceras confusum'' Spath, 1925 *''Asteroceras obtusum'' (Sowerby, 1817) *''Asteroceras reynesi'' Fucini, 1903 *''Asteroceras saltriensis'' Parona, 1896 *''Asteroceras smithii'' (Sowerby, 1814) *''Asteroceras stellare'' (Sowerby 1815) *''Asteroceras turneri'' (Sowerby, 1814) Paleobiology Database - Asteroceras 2014-05-29. Distribution ''Asteroceras'' fossils may be found in the Jurassic marine strata of Canada, China, Germany, Hong Kong, Hungary, Peru, and Turkey, in the Triassic of United States an ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asteroceras Turneri
''Asteroceras'' is an extinct genus of cephalopod belonging to the Ammonite subclass. These fast-moving nektonic carnivores lived during the Triassic and Jurassic periods (from 205.6 to 189.6 Ma). Species *''Asteroceras blakei'' Spath, 1925 *''Asteroceras confusum'' Spath, 1925 *''Asteroceras obtusum'' (Sowerby, 1817) *''Asteroceras reynesi'' Fucini, 1903 *''Asteroceras saltriensis'' Parona, 1896 *''Asteroceras smithii'' (Sowerby, 1814) *''Asteroceras stellare'' (Sowerby 1815) *''Asteroceras turneri'' (Sowerby, 1814) Paleobiology Database - Asteroceras 2014-05-29. Distribution ''Asteroceras'' fossils may be found in the Jurassic marine strata of Canada, China, Germany, Hong Kong, Hungary, Peru, and Turkey, in the Triassic of United States an ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asteroceras Blakei
''Asteroceras'' is an extinct genus of cephalopod belonging to the Ammonite subclass. These fast-moving nektonic carnivores lived during the Triassic and Jurassic periods (from 205.6 to 189.6 Ma). Species *''Asteroceras blakei'' Spath, 1925 *''Asteroceras confusum'' Spath, 1925 *''Asteroceras obtusum'' (Sowerby, 1817) *''Asteroceras reynesi'' Fucini, 1903 *''Asteroceras saltriensis'' Parona, 1896 *''Asteroceras smithii'' (Sowerby, 1814) *''Asteroceras stellare'' (Sowerby 1815) *''Asteroceras turneri'' (Sowerby, 1814) Paleobiology Database - Asteroceras 2014-05-29. Distribution ''Asteroceras'' fossils may be found in the Jurassic marine strata of Canada, China, Germany, Hong Kong, Hungary, Peru, and Turkey, in the Triassic of United States an ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asteroceras Confusum
''Asteroceras'' is an extinct genus of cephalopod belonging to the Ammonite subclass. These fast-moving nektonic carnivores lived during the Triassic and Jurassic periods (from 205.6 to 189.6 Ma). Species *''Asteroceras blakei'' Spath, 1925 *''Asteroceras confusum'' Spath, 1925 *''Asteroceras obtusum'' (Sowerby, 1817) *''Asteroceras reynesi'' Fucini, 1903 *''Asteroceras saltriensis'' Parona, 1896 *''Asteroceras smithii'' (Sowerby, 1814) *''Asteroceras stellare'' (Sowerby 1815) *''Asteroceras turneri'' (Sowerby, 1814) Paleobiology Database - Asteroceras 2014-05-29. Distribution ''Asteroceras'' fossils may be found in the Jurassic marine strata of Canada, China, Germany, Hong Kong, Hungary, Peru, and Turkey, in the Triassic of United States an ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asteroceras Obtusum
''Asteroceras'' is an extinct genus of cephalopod belonging to the Ammonite subclass. These fast-moving nektonic carnivores lived during the Triassic and Jurassic periods (from 205.6 to 189.6 Ma). Species *''Asteroceras blakei'' Spath, 1925 *''Asteroceras confusum'' Spath, 1925 *''Asteroceras obtusum'' (Sowerby, 1817) *''Asteroceras reynesi'' Fucini, 1903 *''Asteroceras saltriensis'' Parona, 1896 *''Asteroceras smithii'' (Sowerby, 1814) *''Asteroceras stellare'' (Sowerby 1815) *''Asteroceras turneri'' (Sowerby, 1814) Paleobiology Database - Asteroceras 2014-05-29. Distribution ''Asteroceras'' fossils may be found in the Jurassic marine strata of Canada, China, Germany, Hong Kong, Hungary, Peru, and Turkey, in the Triassic of United States an ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asteroceras Reynesi
''Asteroceras'' is an extinct genus of cephalopod belonging to the Ammonite subclass. These fast-moving nektonic carnivores lived during the Triassic and Jurassic periods (from 205.6 to 189.6 Ma). Species *''Asteroceras blakei'' Spath, 1925 *''Asteroceras confusum'' Spath, 1925 *''Asteroceras obtusum'' (Sowerby, 1817) *''Asteroceras reynesi'' Fucini, 1903 *''Asteroceras saltriensis'' Parona, 1896 *''Asteroceras smithii'' (Sowerby, 1814) *''Asteroceras stellare'' (Sowerby 1815) *''Asteroceras turneri'' (Sowerby, 1814) Paleobiology Database - Asteroceras 2014-05-29. Distribution ''Asteroceras'' fossils may be found in the Jurassic marine strata of Canada, China, Germany, Hong Kong, Hungary, Peru, and Turkey, in the Triassic of United States an ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asteroceras Saltriensis
''Asteroceras'' is an extinct genus of cephalopod belonging to the Ammonite subclass. These fast-moving nektonic carnivores lived during the Triassic and Jurassic periods (from 205.6 to 189.6 Ma). Species *''Asteroceras blakei'' Spath, 1925 *''Asteroceras confusum'' Spath, 1925 *''Asteroceras obtusum'' (Sowerby, 1817) *''Asteroceras reynesi'' Fucini, 1903 *''Asteroceras saltriensis'' Parona, 1896 *''Asteroceras smithii'' (Sowerby, 1814) *''Asteroceras stellare'' (Sowerby 1815) *''Asteroceras turneri'' (Sowerby, 1814) Paleobiology Database - Asteroceras 2014-05-29. Distribution ''Asteroceras'' fossils may be found in the Jurassic marine strata of Canada, China, Germany, Hong Kong, Hungary, Peru, and Turkey, in the Triassic of United States an ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asteroceras Stellare
''Asteroceras stellare'', the true star ammonite, is an extinct species of cephalopod belonging to the Ammonite subclass and to the family Arietitidae. These fast-moving nektonic carnivores lived during the lower Jurassic The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The J ... period, around 196.5 to 189.6 million years ago. Description ''Asteroceras stellare'' has a shell reaching a diameter of about . Distribution Fossils of this species may be found in the Jurassic of Germany, Hungary and United Kingdom. References Arietitidae Jurassic ammonites {{Ammonitida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arietitidae
Arietitidae is a family of true ammonites that make up part of the superfamily Psiloceratoidea, named after the type genus ''Arietites''. They comprise medium-size to large or gigantic genera which in general are strongly ribbed, tuberculate in some, with keeled or grooved and keeled venters, and well differentiated ammonitic sutures. The aptycus is single valved with a shiny, concentrically striated surface. Arietitidae dominated Lower Jurassic, Sinemurian ammonites, worldwide, extending into the lower Pliensbachian. The Arietitidae may have their origin in the Schlotheimiidae if not directly from the Psiloceratidae, and is the probably source for the Oxynoticeratidae Oxynoticeratidae is a family of true ammonites (order Ammonitida) included in the superfamily Psiloceratoidea. Oxynoticeratids have a broad, worldwide distribution but a narrow stratigraphic one, being known only from the Upper Sinemurian and .... References * * Donvan, D.T. and Callomon, J.H. 1981, Class ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ammonites Of Europe
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 Pompe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sinemurian
In the geologic timescale, the Sinemurian is an age and stage in the Early or Lower Jurassic Epoch or Series. It spans the time between 199.3 ± 2 Ma and 190.8 ± 1.5 Ma (million years ago). The Sinemurian is preceded by the Hettangian and is followed by the Pliensbachian. In Europe the Sinemurian age, together with the Hettangian age, saw the deposition of the lower Lias, in Great Britain known as the Blue Lias. Stratigraphic definitions The Sinemurian Stage was defined and introduced into scientific literature by French palaeontologist Alcide d'Orbigny in 1842. It takes its name from the French town of Semur-en-Auxois, near Dijon. The calcareous soil formed from the Jurassic limestone of the region is in part responsible for the character of the classic Sancerre wines. The base of the Sinemurian Stage is at the first appearance of the ammonite genera ''Vermiceras'' and '' Metophioceras'' in the stratigraphic record. A global reference profile ( GSSP or golden spike) for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sinemurian Life
In the geologic timescale, the Sinemurian is an age and stage in the Early or Lower Jurassic Epoch or Series. It spans the time between 199.3 ± 2 Ma and 190.8 ± 1.5 Ma (million years ago). The Sinemurian is preceded by the Hettangian and is followed by the Pliensbachian. In Europe the Sinemurian age, together with the Hettangian age, saw the deposition of the lower Lias, in Great Britain known as the Blue Lias. Stratigraphic definitions The Sinemurian Stage was defined and introduced into scientific literature by French palaeontologist Alcide d'Orbigny in 1842. It takes its name from the French town of Semur-en-Auxois, near Dijon. The calcareous soil formed from the Jurassic limestone of the region is in part responsible for the character of the classic Sancerre wines. The base of the Sinemurian Stage is at the first appearance of the ammonite genera ''Vermiceras'' and '' Metophioceras'' in the stratigraphic record. A global reference profile ( GSSP or golden spike) for t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
