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San Jose Formation
The San Jose Formation is an Early Eocene (Wasatchian in the NALMA classification) geologic formation in the San Juan Basin of New Mexico and Colorado.San Jose Formation at .org Description 
The San Jose Formation is mostly but with some
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New Mexico
) , population_demonym = New Mexican ( es, Neomexicano, Neomejicano, Nuevo Mexicano) , seat = Santa Fe , LargestCity = Albuquerque , LargestMetro = Tiguex , OfficialLang = None , Languages = English, Spanish ( New Mexican), Navajo, Keres, Zuni , Governor = , Lieutenant Governor = , Legislature = New Mexico Legislature , Upperhouse = Senate , Lowerhouse = House of Representatives , Judiciary = New Mexico Supreme Court , Senators = * * , Representative = * * * , postal_code = NM , TradAbbreviation = N.M., N.Mex. , area_rank = 5th , area_total_sq_mi = 121,591 , area_total_km2 = 314,915 , area_land_sq_mi = 121,298 , area_land_km2 = 314,161 , area_water_sq_mi = 292 , area_water_km2 = 757 , area_water_percent = 0.24 , population_as_of = 2020 , population_rank = 36th , 2010Pop = 2,117,522 , population_density_rank = 45th , 2000DensityUS = 17.2 , 2000Density = 6.62 , MedianHouseholdIncome = $51,945 , IncomeRank = 45th , AdmittanceOrder = ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monocline
A monocline (or, rarely, a monoform) is a step-like fold in rock strata consisting of a zone of steeper dip within an otherwise horizontal or gently-dipping sequence. Formation Monoclines may be formed in several different ways (see diagram) * By differential compaction over an underlying structure, particularly a large fault at the edge of a basin due to the greater compactibility of the basin fill, the amplitude of the fold will die out gradually upwards. * By mild reactivation of an earlier extensional fault during a phase of inversion causing folding in the overlying sequence. * As a form of fault propagation fold during upward propagation of an extensional fault in basement into an overlying cover sequence. * As a form of fault propagation fold during upward propagation of a reverse fault in basement into an overlying cover sequence. Examples * Waterpocket Fold in Capitol Reef National Park, Utah *Comb Ridge in southern Utah * Grandview-Phantom Monocline in Grand Can ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxyaena
''Oxyaena'' ("sharp hyena") is an extinct genus of oxyaenid mammal from early Eocene of Europe, Asia and North America (most specimens being found in Colorado). Etymology The name of the genus translates as "sharp hyaena" ( and name of hyena genus '' Hyaena''). Description The species were superficially cat or wolverine-like, with a flexible body long, and short limbs. Some species like ''Oxyaena forcipata'' were bigger with a body mass estimated to be 20 kg. ''Oxyaena'' had a broad, low skull (20 cm long) with a long facial part and a massive lower jaw, while its body and tail were long and its five-toed limbs were short. Oxyaenidae, a family of extinct meat-eating mammals, takes its name from this genus. Oxyaenids may have evolved in North or Central America, and tended to have long bodies and tails with short legs. Because of their shape, early studies often compared them to cats, but this body form has evolved many times in small to medium-sized forest-dwelling ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vulpavus
''Vulpavus'' ("fox grandfather") is an extinct genus of Miacidae Miacids are extinct primitive carnivoramorphans within the family Miacidae that lived during the Paleocene and Eocene epochs, about 62–34 million years ago. Miacids existed for approximately . Miacids are thought to have evolved into the .... It measured 60–90 cm in length and had an estimated weight over 1.19 kg (in ''V. palustris'').http://museumu03.museumwww.naturkundemuseum-berlin.de/cgi-bin/bridge.pl?a=basicTaxonInfo&taxon_no=52680 Notes References * Alexander, J. 1992. Alas poor Notharctus. Natural History 9:54-59. * Flynn, J.J., 1998. Early Cenozoic Carnivora ("Miacoidea"). pp. 110–123 ''in'' C.M. Janis, K.M. Scott, and L.L. Jacobs (''eds.'') ''Evolution of Tertiary Mammals of North America. Volume 1: Terrestrial Carnivores, Ungulates, and Ungulatelike Mammals.'' Cambridge University Press, Cambridge. † Extinct mammals of North America Miacids Eocene carnivorans Preh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diacodexis
''Diacodexis'' is an extinct genus of small herbivore mammals belonging to the family Dichobunidae which lived in North America, Europe and Pakistan from 55.4 mya to 46.2 mya and existing for approximately . Description ''Diacodexis'' is the oldest known even-toed ungulate. In life, it would have resembled a modern duiker A duiker is a small to medium-sized brown antelope native to sub-Saharan Africa, found in heavily wooded areas. The 22 extant species, including three sometimes considered to be subspecies of the other species, form the subfamily Cephalophina ..., measuring about in body length, but with a much longer tail. Unlike most later species of artiodactyl, it still had five toes on each foot, although the third and fourth toes were already elongated. It may also have had small hooves on each toe. Its teeth suggest that it was a herbivorous browser. As suggested by its long legs, ''Diacodexis'' is believed to have been fast-running, capable of leaping relative ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Omomyidae
Omomyidae is a group of early primates that radiated during the Eocene epoch between about (mya). Fossil omomyids are found in North America, Europe & Asia making it one of two groups of Eocene primates with a geographic distribution spanning holarctic continents, the other being the adapids (family Adapidae). Early representatives of the Omomyidae and Adapidae appear suddenly at the beginning of the Eocene (56 mya) in North America, Europe, and Asia, and are the earliest known crown primates. Etymology The Omomyidae are named after the type genus '' Omomys''. While the etymology of this genus is uncertain, it most likely derives from the Ancient Greek ὠμός (ōmós), "raw, crude" + μῦς (mûs), "mouse". Characteristics Features that characterize many omomyids include large orbits (eye sockets), shortened rostra and dental arcades, loss of anterior premolars, cheek teeth adapted for insectivorous or frugivorous diets, and relatively small body mass (i.e., less than 500 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microsyops
''Microsyops'' is a plesiadapiform primate found in Middle Eocene in North America. It is in the family Microsyopidae, a Plesiadapiformes, plesiadapiform family characterized by distinctive lanceolate lower first incisors. It appears to have had a more developed sense of smell than other early primates. It is believed to have eaten fruit, and its fossils show the oldest known dental Dental caries (non-human), cavities in a mammal. There are nine species of ''Microsyops'' that exist in the fossil record from the middle Wasatchian (~53 million years ago) through Uintan (~42 million years ago) North American Land Mammal Ages. ''Microsyops'' is primarily known from the Rocky Mountains, Rocky Mountain region of the United States, though fossils have also been found in California and Texas. Diet and body size Body size diversity of ''Microsyops'' spans from the 700-gram ''Microsyops cardiorestes'' to over 3000 grams for ''Microsyops kratos,'' estimated using the dimensions of the upper ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
