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Alachua Formation
The Alachua Formation is a Miocene geologic formation in Florida. The claystones, sandstones and phosphorites of the formation preserve many fossils of mammals, birds, reptiles and fish, among others megalodon. Fossil content The formation has provided the following fossils.Alachua Formation at .org Mammals ;Rodents * '' Harrymys magnus'' * '' Nototamias hulberti'' * ''[...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] |
Fossilworks
Fossilworks is a portal which provides query, download, and analysis tools to facilitate access to the Paleobiology Database The Paleobiology Database is an online resource for information on the distribution and classification of fossil animals, plants, and microorganisms. History The Paleobiology Database (PBDB) originated in the NCEAS-funded Phanerozoic Marine Pale ..., a large relational database assembled by hundreds of paleontologists from around the world. History Fossilworks was created in 1998 by John Alroy and is housed at Macquarie University. It includes many analysis and data visualization tools formerly included in the Paleobiology Database.{{cite web, title=Frequently asked questions, url=http://www.fossilworks.org/cgi-bin/bridge.pl?page=FAQ, publisher=Fossilworks, access-date=17 December 2021 References {{Reflist External links {{Wikidata property, P842 * [Baidu] |
Enhydritherium
''Enhydritherium terraenovae'' is an extinct marine otter endemic to North America that lived during the Miocene through Pliocene epochs from ~9.1–4.9 Ma. ( AEO), existing for approximately . The ancestral lineage of ''Enhydritherium terraenova'' can be traced to Africa and Eurasia, but no clear route of migration can be determined according to Thompson et al. Taxonomy ''Enhydritherium terraenovae'' was named by Berta and Morgan in 1985 and is the genotype for this animal. Its type locality is the phosphate Palmetto Mine in Florida, which is in a Hemphillian marginal marine sandstone in the Upper Bone Valley Formation of Florida. Fossil distribution Fossil specimens were found in California (3 sites) and Florida (8 sites). In 2017, part of a jawbone was found in the Juchipila Basin, Zacatecas , image_map = Zacatecas in Mexico (location map scheme).svg , map_caption = State of Zacatecas within Mexico , coordinates = , coor_pinpoint ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cynelos
'' Cynelos'' is a large extinct genus of bear dogs which inhabited North America, Europe, and Africa from the Early Miocene subepoch to the Late Miocene subepoch 20.4—13.7 Annum, Mya, existing for approximately . Species * ''C. caroniavorus'' White, 1942 * ''C. idoneus'' Matthew, 1924 * ''C. lemanensis'' Pomel, 1846 * ''C. malasi'' Hunt & Stepleton, 2015 * ''C. stenos''Hunt Jr. and Yatkola, 2020Hunt R. M. Jr & Yatkola D. A. 2020. * ''C. jitu''Morlo, 2021 A new species of the amphicyonid carnivore ''Cynelos'' Jourdan, 1862 from the early Miocene of North America, in Bonis L. de & Werdelin L. (eds), Memorial to Stéphane Peigné: Carnivores (Hyaenodonta and Carnivora) of the Cenozoic. ''Geodiversitas'' 42 (5): 57-67. https://doi.org/10.5252/geodiversitas2020v42a5. http://geodiversitas.com/42/5 * ''C. sinapius'' Matthew, 1902 References Miocene mammals of North America Miocene mammals of Europe Miocene mammals of Africa Miocene bear dogs Prehistoric carnivoran genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Borophagus
''Borophagus'' ("gluttonous eater") is an extinct genus of the subfamily Borophaginae, a group of canids endemic to North America from the Middle Miocene epoch through the Early Pleistocene epoch 12—1.8 Mya. Evolution ''Borophagus'', like other borophagines, are loosely known as "bone-crushing" or " hyena-like" dogs. Though not the most massive borophagine by size or weight, it had a more highly evolved capacity to crunch bone than earlier, larger genera such as ''Epicyon'', which seems to be an evolutionary trend of the group (Turner, 2004). During the Pliocene epoch, ''Borophagus'' began being displaced by other ''Canid'' species such as ''Canis edwardii'' and later by ''Aenocyon dirus''. Early species of ''Borophagus'' were placed in the genus ''Osteoborus'' until recently, but the genera are now considered synonyms. Description Typical features of this genus are a bulging forehead and powerful jaws; ''Borophagus'' has been considered to be probably a scavenger by paleonto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphicyon
''Amphicyon'' ("ambiguous dog") is an extinct genus of large carnivorous bone-crushing mammals, popularly known as bear dogs, of the family Amphicyonidae, subfamily Amphicyoninae, from the Burdigalian Epoch until the late Pliocene, with the creature having bear-like and dog-like features. They ranged over North America, Europe, Asia, and Africa from 16.9 to 2.6 Ma ago, existing for approximately . Morphology ''Amphicyon'' was the typical bear-dog amphicyonid with morphology similar to both bears and dogs. With its robust build and maximum length of 2.5 m (8 ft), the largest species looked more like a bear than a dog. It had a large heavy tail, thick neck, robust limbs and teeth like a wolf. It was probably an omnivore with a lifestyle comparable to that of the brown bear. The ''Amphicyon'' was very large for predators of its time but this advantage eventually became a disadvantage because its large body mass was too large to take faster prey. ''A. major'' has been est ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mylagaulidae
The Mylagaulidae or mylagaulids are an extinct clade of sciuromorph rodents nested within the family Aplodontiidae. They are known from the Neogene of North America and China. The oldest member is the Late Oligocene '' Trilaccogaulus montanensis'' that lived some 29 million years ago (Mya), and the youngest was '' Ceratogaulus hatcheri''—formerly in the invalid genus "''Epigaulus"'' —which was found barely into the Pliocene, some 5 Mya.Hopkins (2005) Systematics Three subfamilies are recognized. The taxonomy of '' Galbreathia'' is not resolved; it might belong in Mylagaulinae, but lacks the characteristic apomorphies. Promylagaulinae *Genus '' Crucimys'' *Genus '' Promylagaulus'' *Genus '' Trilaccogaulus'' *Genus '' Simpligaulus'' Mesogaulinae *Genus '' Mesogaulus'' - includes ''Mylagaulodon'' Mylagaulinae *Genus '' Alphagaulus'' ( paraphyletic) *Genus '' Ceratogaulus'' - includes "''Epigaulus"'' *Genus '' Hesperogaulus'' *Genus '' Mylagaulus'' *Genus ''Notogaulus'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lagomorpha
The lagomorphs are the members of the taxonomic order Lagomorpha, of which there are two living families: the Leporidae (hares and rabbits) and the Ochotonidae (pikas). The name of the order is derived from the Ancient Greek ''lagos'' (λαγώς, "hare") + ''morphē'' (μορφή, "form"). There are 110 recent species of lagomorph of which 109 are extant, including 34 species of pika, 42 species of rabbit, and 33 species of hare. Taxonomy and evolutionary history Other names used for this order, now considered synonymous, include: ''Duplicidentata'' - Illiger, 1811; ''Leporida'' - Averianov, 1999; ''Neolagomorpha'' - Averianov, 1999; ''Ochotonida'' - Averianov, 1999; and ''Palarodentia'' - Haeckel, 1895, Lilian, 2016. The evolutionary history of the lagomorphs is still not well understood. Until recently, it was generally agreed that '' Eurymylus'', which lived in eastern Asia and dates back to the late Paleocene or early Eocene, was an ancestor of the lagomorphs. More re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mylagaulus
''Mylagaulus'' is an extinct genus of rodents in the family Mylagaulidae. ''Mylagaulus'' lived in the Americas during the middle to late Miocene. The genus contains the following species: *''M. cambridgensis'' *''M. cornusaulax'' Czaplewski, 2012 – Miocene, Oklahoma (United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...) *''M. elassos'' *''M. kinseyi'' *''M. sesquipedalis'' References Prehistoric rodent genera Extinct mammals of North America {{paleo-rodent-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
