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Rybushka Formation
The Rybushka Formation is a Campanian geologic formation in the Penza and Saratov Oblasts of European Russia. Pterosaur, fish and invertebrate fossils have been recovered from the formation. Fossil content The following fossils have been reported from the formation: * '' Amylodon karamysh'' * '' Archaeolamna kopingensis'' * '' Bogolubovia orientalis'' * '' Cretolamna appendiculata'' * '' Ischyodus bifurcatus'' * ''Volgadraco bogolubovi'' * '' Pseudocorax laevis'' * '' Squalicorax kaupi'' * '' Squatina hasei'' * '' Chalmys sp.'' * '' Edaphodon sp.'' * '' Elasmodus sp.'' * '' Eostriatolamia sp.'' * '' Gryphaeostrea sp.'' * '' Heterodontus sp.'' * '' Monticulina sp.'' * '' Prognathodon sp.'' * '' Solariella sp.'' * '' Squatirhina sp.'' * '' ?Clidastes sp.'' * Chelospharginae indet. * Elasmobranchii indet. * Elasmosauridae indet. * Enchodontidae indet. * Mosasauridae indet. * Plesiosauria indet. * Polycotylidae indet. * Testudinata indet. * ?Thoracosaurinae indet. See al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geological Formation
A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics ( lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exposed in a geographical region (the stratigraphic column). It is the fundamental unit of lithostratigraphy, the study of strata or rock layers. A formation must be large enough that it can be mapped at the surface or traced in the subsurface. Formations are otherwise not defined by the thickness of their rock strata, which can vary widely. They are usually, but not universally, tabular in form. They may consist of a single lithology (rock type), or of alternating beds of two or more lithologies, or even a heterogeneous mixture of lithologies, so long as this distinguishes them from adjacent bodies of rock. The concept of a geologic formation goes back to the beginnings of modern scientific geology. The term was used by Abraham Gottlob Wer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elasmobranchii
Elasmobranchii () is a subclass of Chondrichthyes or cartilaginous fish, including sharks (superorder Selachii), rays, skates, and sawfish (superorder Batoidea). Members of this subclass are characterised by having five to seven pairs of gill clefts opening individually to the exterior, rigid dorsal fins and small placoid scales on the skin. The teeth are in several series; the upper jaw is not fused to the cranium, and the lower jaw is articulated with the upper. The details of this jaw anatomy vary between species, and help distinguish the different elasmobranch clades. The pelvic fins in males are modified to create claspers for the transfer of sperm. There is no swim bladder; instead, these fish maintain buoyancy with large livers rich in oil. The definition of the clade is unclear with respect to fossil chondrichthyans. It has been used by different authors as equivalent to Neoselachii (the clade including modern sharks and rays and their last common ancestor) or for al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clidastes
''Clidastes'' is an extinct genus of marine lizard belonging to the mosasaur family. It is classified as part of the Mosasaurinae subfamily, alongside genera like ''Mosasaurus'' and ''Prognathodon''. ''Clidastes'' is known from deposits ranging in age from the Coniacian to the early Campanian in the United States. ''Clidastes'' means "locked vertebrae", which originates from the Greek noun κλειδί, or kleid meaning key (akin to Latin ''claudere'' meaning to shut). This refers to how the vertebral processes allow the proximal heads of the vertebrae to interlock for stability and strength during swimming. It was one of the earliest hydropedalIn mosasaurs, the terms "hydropedal" and "plesiopedal" refers to varying limb conditions and varying degrees of adaptations for marine life. Plesiopedal mosasaurs, such as ''Dallasaurus'' or ''Tethysaurus'' were primitive and largely coastal, while later hydropedal mosasaurs were streamlined and well-adapted to marine life. mosasaurs, repr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Squatirhina
''Squatirhina'' is a genus of Late Cretaceous cartilaginous fish whose fossils have been found in the Aguja and Pen Formations of Big Bend National Park, Texas, USA. See also * List of prehistoric cartilaginous fish This list of prehistoric cartilaginous fish genera is an attempt to create a comprehensive listing of all genera that have ever been included in the class chondrichthyes ''and'' are known from the fossil record. This list excludes purely vernacula ... Footnotes References * Hunt, ReBecca K., Vincent L. Santucci and Jason Kenworthy. 2006. "A preliminary inventory of fossil fish from National Park Service units." in S.G. Lucas, J.A. Spielmann, P.M. Hester, J.P. Kenworthy, and V.L. Santucci (ed.s), Fossils from Federal Lands. New Mexico Museum of Natural History and Science Bulletin 34, pp. 63–69. Prehistoric cartilaginous fish genera Cretaceous cartilaginous fish Late Cretaceous fish of North America Laramie Formation Ojo Alamo Formation {{p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solariella
''Solariella'' is a genus of small to minute sea snails, marine gastropod molluscs in the family Solariellidae within the superfamily Trochoidea, the top snails, turban snails and their allies. MolluscaBase eds. (2022). MolluscaBase. Solariella S. V. Wood, 1842. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=138597 on 2022-06-17 This genus was founded by S. Wood for an English fossil trochid, conical in form, with tubular whorls and a deep umbilicus, its margin crenulated. Species According to the World Register of Marine Species (WoRMS), the following species with valid names are included within the genus ''Solariella'' * '' Solariella amabilis'' (Jeffreys, 1865) * '' Solariella anarensis'' Dell, 1972 * '' Solariella antarctica'' Powell, 1958 * '' Solariella bathyantarctica'' Numanami, 1996 * '' Solariella bermejoi'' Rolán, Hernández & Deniz, 2005 * † '' Solariella bimarginata'' (Deshayes, 1863) * '' Solarie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prognathodon
''Prognathodon'' is an extinct genus of marine lizard belonging to the mosasaur family. It is classified as part of the Mosasaurinae subfamily, alongside genera like ''Mosasaurus'' and ''Clidastes''. ''Prognathodon'' has been recovered from deposits ranging in age from the Campanian to the Maastrichtian in the Middle East, Europe, New Zealand, and North America. ''Prognathodon'' means "forejaw tooth", which originates from the Latin ''pro''- ("earlier" or "prior"), Greek ''gnathos'' ("jaw") and ''odṓn'' ("tooth"). Twelve nominal species of ''Prognathodon'' are recognised, from North America, northern and western Africa, the Middle East, western Europe and New Zealand. Due to the sometimes clear differences between them and the incomplete nature of many of the specimens, the systematics of the genus and which species should properly be considered ''Prognathodon'' is controversial. Some species have been assigned to other genera, such as ''Dollosaurus'' and ''Brachysaurana'', but ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monticulina
''Hydnophora'' is a genus of large polyp stony corals in the family Merulinidae. List of species According to World Register of Marine Species : * '' Hydnophora bonsai'' Veron, 1990 * '' Hydnophora exesa'' (Pallas, 1766) * '' Hydnophora grandis'' Gardiner, 1904 * '' Hydnophora microconos'' (Lamarck, 1816) * '' Hydnophora pilosa'' Veron, 1985 * ''Hydnophora rigida Hydnophora rigida, commonly known as horn coral, are found in reefs and are in the genus ''Hydnophora''. They were first described by Dana in 1846. Their color is naturally green and brown, or sometimes cream. They can also become fluorescent green ...'' (Dana, 1846) References Merulinidae Scleractinia genera {{scleractinia-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eostriatolamia
''Eostriatolamia'' is an extinct genus of sharks in the family Odontaspididae. It was described by Gluckman in 1980. A new species, ''E. paucicorrugata'', was described from the Cenomanian of Canada by Charlie J. Underwood and Stephen L. Cumbaa in 2010.Charlie J. Underwood and Stephen L. Cumbaa (2010). "Chondrichthyans from a Cenomanian (Late Cretaceous) bonebed, Saskatchewan, Canada". Palaeontology 53 (4): 903–944. . Species * ''Eostriatolamia aktobensis'' Zhelezko, 1987 * ''Eostriatolamia lerichei'' Glikman & Zhelezko in Zhelezko, 1977 * ''Eostriatolamia paucicorrugata'' Underwood & Cumbaa, 2010 * ''Eostriatolamia segedini'' Glikman & Zhelezko in Zhelezko, 1977 * ''Eostriatolamia venusta'' Leriche, 1906 * ''Eostriatolamia subulata'' (Agassiz, 1844) References External links ''Eostriatolamia''at the Paleobiology Database The Paleobiology Database is an online resource for information on the distribution and classification of fossil animals, plants, and microorganisms. Hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
