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Curré Formation
The Curré Formation is a geologic formation of the Taraba Basin Group in Costa Rica. The deltaic conglomerates preserve fossils dating back to the Late Miocene to Early Pliocene period (Hemphillian). at .org Fossil content The following fossils have been found in the formation: * '' Aetobatus arcuatus'' * '' Calippus hondurensis'' * ''[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Formation (stratigraphy)
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 (geology), 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Early Pliocene
{{disambiguation, geo ...
Early may refer to: History * The beginning or oldest part of a defined historical period, as opposed to middle or late periods, e.g.: ** Early Christianity ** Early modern Europe Places in the United States * Early, Iowa * Early, Texas * Early Branch, a stream in Missouri * Early County, Georgia Other uses * ''Early'' (Scritti Politti album), 2005 * ''Early'' (A Certain Ratio album), 2002 * Early (name) * Early effect, an effect in transistor physics * Early Records, a record label * the early part of the morning See also * Earley (other) Earley is a town in England. Earley may also refer to: * Earley (surname), a list of people with the surname Earley * Earley (given name), a variant of the given name Earlene * Earley Lake, a lake in Minnesota *Earley parser, an algorithm *Earley ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleiolama
''Pleiolama'' is an extinct genus of terrestrial herbivore in the family Camelidae, endemic to North America during the Pliocene. Taxonomy The genus ''Pleiolama'' was originally named ''Pliauchenia'' by Edward Drinker Cope Edward Drinker Cope (July 28, 1840 – April 12, 1897) was an American zoologist, paleontologist, comparative anatomist, herpetologist, and ichthyologist. Born to a wealthy Quaker family, Cope distinguished himself as a child prodigy interested ... in 1875. Fossil distribution Fossil distribution ranges from southern and north-central United States to Mexico. References Prehistoric camelids Pliocene even-toed ungulates Prehistoric mammals of North America Prehistoric even-toed ungulate genera {{paleo-eventoedungulate-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isurus Desorii
''Isurus'' is a genus of mackerel sharks in the family Lamnidae, commonly known as the mako sharks. Description The two living species are the common shortfin mako shark (''I. oxyrinchus'') and the rare longfin mako shark (''I. paucus''). They range in length from , and have an approximate maximum weight of . They both have a distinctive blue-gray color scheme common among mackerel sharks. Several extinct species are known from fossils found in sediments from the Cretaceous to the Quaternary (age range: 99.7 to 0.781 million years ago). The family Lamnidae also includes the great white shark and the porbeagle. Mako sharks are capable of swimming at speeds up to . The great white shark is also closely related to an ancient mako shark species, ''Isurus hastalis''. However, fossil evidence suggests ''I. hastalis'', like the great white shark, also belonged to the genus '' Carcharodon''. Species The genus contains these species: * ''Isurus oxyrinchus'' ( Rafinesque, 1810) (short ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isogomphodon
The daggernose shark (''Isogomphodon oxyrhynchus'') is a little-known species of requiem shark, in the family Carcharhinidae, and the only extant member of its genus. It inhabits shallow tropical waters off northeastern South America, from Trinidad to northern Brazil, favoring muddy habitats such as mangroves, estuaries, and river mouths, though it is intolerant of fresh water. A relatively small shark typically reaching in length, the daggernose shark is unmistakable for its elongated, flattened, and pointed snout, tiny eyes, and large paddle-shaped pectoral fins. Daggernose sharks are predators of small schooling fishes. Its reproduction is viviparous, with females give birth to 2–8 pups every other year during the rainy season; this species is capable of shifting the timing of its reproductive cycle by several months in response to the environment. Harmless to humans, the daggernose shark is caught for food and as bycatch in artisanal and commercial fisheries. Limited in r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemipristis Serra
''Hemipristis serra'' is an extinct species of weasel shark which existed during the Miocene epoch. It was described by Louis Agassiz in 1843. While today's snaggletooth shark is not very large or dangerous, ''Hemipristis serra'', which lived in the Atlantic Ocean during the Oligocene and Miocene, was considerably larger than its modern-day relative and had much larger teeth. Its total length is estimated to be . Marks made by the teeth of ''H. serra'' are often found on the bones of the manatee ''Metaxytherium'' leading some scientists to hypothesize that ''H. serra'' specialized in preying on these sirenians. In the Gatun Formation of Panama, ''H. serra'' was contemporary with pups of the large lamniform shark ''Otodus megalodon'', and both it and the great hammerhead The great hammerhead (''Sphyrna mokarran'') or great hammerhead shark is the largest species of hammerhead shark, belonging to the family Sphyrnidae, attaining an average length of and reaching a maximum le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gavialosuchus
''Gavialosuchus'' is an extinct genus of gavialid crocodylian from the early Miocene of Europe. Currently only one species is recognized, as a few other species of ''Gavialosuchus'' have since been reclassified to other genera. Taxonomy The type species, ''G. eggenburgensis'', is known from the early Miocene of Austria. Two other species - ''G. americanus'' and ''G. carolinensis'' - have since been reclassified to other genera. Myrick Jr. (2001) proposed synonymizing ''Gavialosuchus americanus'' with '' Thecachampsa antiqua''. Piras ''et al.'' (2007) advocated transferring both ''G. americanus'' and ''G. carolinensis'' to ''Thecachampsa'' as distinct species of the latter genus, however. Jouve ''et al.'' (2008) retained ''G. americanus'' in ''Gavialosuchus'' and found it to be the sister group of ''G. eggenburgensis'' (''G. carolinensis'' was not discussed). However, Jouve ''et al.'' (2008) didn't test ''Thecachampsa antiqua'' in their phylogenetic analysis. Shan ''et al.'' (200 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dinohippus
''Dinohippus'' (Greek: "Terrible horse") is an extinct equid which was endemic to North America from the late Hemphillian stage of the Miocene through the Zanclean stage of the Pliocene (10.3—3.6 mya) and in existence for approximately . Fossils are widespread throughout North America, being found at more than 30 sites from Florida to Alberta and Panama (Alajuela Formation The Alajuela Formation, originally Alhajuela Formation (Tau),Geologic Map, 1980 is a Miocene, Late Miocene (Tortonian, Hemphillian, Early Hemphillian or Clarendonian, Latest Clarendonian in the North American land mammal age, NALMA classification) ...). Taxonomy Quinn originally referred ''"Pliohippus" mexicanus'' to ''Dinohippus'', but unpublished cladistic results in an SVP 2018 conference abstract suggest that ''mexicanus'' is instead more closely related to extant horses than to ''Dinohippus''. Description ''Dinohippus'' was the most common horse in North America and like '' Equus'', it did not have ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dasyatis
''Dasyatis'' (Greek δασύς ''dasýs'' meaning rough or dense and βατίς ''batís'' meaning skate) is a genus of stingray in the family Dasyatidae that is native to the Atlantic, including the Mediterranean. In a 2016 taxonomic revision, many of the species formerly assigned to ''Dasyatis'' were reassigned to other genera (''Bathytoshia'', ''Fontitrygon'', ''Hemitrygon'', '' Hypanus'', ''Megatrygon'' and ''Telatrygon''). Species *'' Dasyatis dipterura'' ( D. S. Jordan & C. H. Gilbert, 1880) (diamond stingray) *''Dasyatis chrysonota'' A. Smith, 1828 (blue stingray) *'' Dasyatis hypostigma'' H. R. S. Santos & M. R. de Carvalho, 2004 (groovebelly stingray) *''Dasyatis marmorata'' Steindachner, 1892 (marbled stingray) *''Dasyatis pastinaca'' Linnaeus, 1758 (common stingray) *'' Dasyatis tortonesei'' Capapé, 1975 (Tortonese's stingray) Fossil species * † '' Dasyatis africana'' Arambourg, 1947 See also * List of prehistoric cartilaginous fish This list of prehi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carcharhinus Priscus
''Carcharhinus'' is the type genus of the family Carcharhinidae, the requiem sharks. One of 12 genera in its family, it contains over half of the species therein. It contains 35 extant and eight extinct species to date, with likely more species yet to be described. Species Extant T Type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specime ... Fossil See also * List of prehistoric cartilaginous fish genera References Bibliography * * * * * * * {{Taxonbar, from=Q312359 Shark genera Extant Eocene first appearances Taxa named by Henri Marie Ducrotay de Blainville ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carcharhinus Longimanus
The oceanic whitetip shark (''Carcharhinus longimanus''), also known as shipwreck shark, Brown Milbert's sand bar shark, brown shark, lesser white shark, nigano shark, oceanic white-tipped whaler, and silvertip shark, is a large pelagic requiem shark inhabiting tropical and warm temperate seas. Its stocky body is most notable for its long, white-tipped, rounded fins. Though slow-moving, it is opportunistic and aggressive, and is reputed to be dangerous to shipwreck survivors. Recent studies show steeply declining populations because its large fins are highly valued as the chief ingredient of shark fin soup, and as with other shark species, the whitetip faces mounting fishing pressure throughout its range. Taxonomy The oceanic whitetip shark, or lesser white shark, was described in 1831 by naturalist René-Primevère Lesson, who named the shark ''Carcharhinus maou''. It was next described by Cuban Felipe Poey in 1861 as ''Squalus longimanus''. The name ''Pterolamiops longimanus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calippus (genus)
''Calippus'' is an extinct genus of hoofed-mammals in the horse family (Equidae), known from the Middle Miocene through the Early Pliocene Early may refer to: History * The beginning or oldest part of a defined historical period, as opposed to middle or late periods, e.g.: ** Early Christianity ** Early modern Europe Places in the United States * Early, Iowa * Early, Texas * Early ... of North and Central America. Fossils have been found in the central and Eastern United States ranging south to Honduras. These equines had high crowned teeth and a quadrangular, wide muzzle, and were small compared to their contemporary relatives, with ''C. elachistus'' weighing 49 kg, ''C. cerasinus'' weighing 102 kg, 132 kg for ''C. theristes'' and 73 kg for ''C. mccartyi''. References Miocene horses Pliocene odd-toed ungulates Prehistoric placental genera Miocene mammals of North America Pliocene mammals of North America Barstovian Clarendonian Hemphillian Blancan Fossil ta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
