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Haptodus
''Haptodus'' is an extinct genus of basal sphenacodont, member of the clade that includes therapsids and hence, mammals. It was at least in length. It lived in present-day France during the Early Permian. It was a medium-sized predator, feeding on insects and small vertebrates. Discovery and history ''Haptodus baylei'' ''Haptodus baylei'', the type species of ''Haptodus'', is known only from a single, badly preserved specimen hosted in the Muséum National d'Histoire Naturelle of Paris. It was collected at Les Télots, near Autun of France, from a terrestrial horizon dating to the Asselian stage of the Cisuralian series, about 299-296.4 million years old. The taxonomy of many pelycosaurs was revised in details by Alfred Sherwood Romer & Llewellyn Price (1940). They synonymized many genera, including ''Callibrachion'' (from Margenne near Autun, France), ''Datheosaurus'' (from Nowa Ruda of Poland), ''Palaeohatteria'' and ''Pantelosaurus'' (both from Germany), with ''Haptod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haptodus Garnettensis
''"Haptodus" garnettensis'' is an extinct species of basal sphenacodont from the Late Carboniferous ( Pennsylvanian) of Kansas, USA. Taxonomy The holotype of ''"Haptodus" garnettensis'' is RM 14156, a partially articulated skeleton (cranial and postcranial) of immature individual. More than 16 well-preserved specimen of various ontological states were referred to this species. All specimens came from the Garnett Quarry, located in the Anderson County of Kansas. They were collected from the Rock Lake Member of the Stanton Formation (Lansing Group), dating to the late Kasimovian stage of the late Pennsylvanian series, about 304 million years old. Laurin (1993, 1994) suggested that ''Haptodus garnettensis'' would have to be renamed because he saw ''Haptodus baylei'' as a possible ''nomen dubium''. In his dissertation revising taxa assigned to ''Haptodus'', Spindler (2015) proposed that ''"Haptodus" garnettensis'' is not congeneric with the ''Haptodus'' type specie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pantelosaurus
''Pantelosaurus'' (meaning "complete lizard") is an extinct genus of basal sphenacodonts known from the Early Permian period (Asselian stage) of Saxony, Germany. It contains a single species, ''Pantelosaurus saxonicus''. Discovery ''Pantelosaurus'' is known from about 6 individuals including skulls and partial postcranial skeletons. All specimens were collected at Königin-Carola-Schacht locality, in Dresden, from the uppermost part of the Döhlen Formation, lower Rotliegend Group (Döhlen Basin), dating to the Asselian stage of the Cisuralian series, about 299–296.4 million years old. Classification ''Pantelosaurus'' was first described by von Huene (1925) as a pelycosaur. In 1940, Alfred Sherwood Romer and Llewellyn Price revised the taxonomy of pelycosaurs and synonymized ''Pantelosaurus'' with ''Haptodus'', creating the new combination ''Haptodus saxonicus''. After describing a new species of ''Haptodus'' in 1977, Currie (1979) synonymized all European hapto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palaeohatteria
''Palaeohatteria'' is an extinct genus of basal sphenacodonts known from the Early Permian period (Sakmarian stage) of Saxony, Germany. It contains a single species, ''Palaeohatteria longicaudata''. Discovery ''Palaeohatteria'' is based on very young individuals including skulls and partial postcranial skeletons. All specimens were collected at Niederhäslich locality, in Dresden, from the Niederhäslich Limestone Member of the Niederhäslich Formation, Rotliegend Group (Döhlen Basin), dating to the Sakmarian stage of the Cisuralian series, about 295.0 -290.1 million years old. Description ''Palaeohatteria'' was a fairly small synapsid, up to 60 cm in length and with a mass of about 3 kg. The affinities of ''Palaeohatteria'' to the pelycosaur were first described in details by Alfred Sherwood Romer & Llewellyn Price (1940). They revised the taxonomy of pelycosaurs and synonymized ''Palaeohatteria'' (alongside with '' Pantelosaurus'' and others) with ''Ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Callibrachion
''Callibrachion'' is an extinct genus of caseid synapsids that lived in east-central France during the Lower Permian (Asselian). The holotype and only known specimen ( MNHN.F.AUT490) is represented by an almost complete postcranial skeleton associated with skull fragments discovered at the end of the 19th century in the Permian Autun basin in Saône-et-Loire department, in the Bourgogne-Franche-Comté region. It belongs to an immature individual measuring less than 1.50 m in length. ''Callibrachion'' was long considered a junior synonym of the genus ''Haptodus'' and classified among the sphenacodontid pelycosaurs. In 2015, a new study found that ''Callibrachion'' was a different animal from ''Haptodus'' and that it was a caseasaur rather than a sphenacodontid. This was confirmed in 2016 by a cladistic analysis which recovered ''Callibrachion'' as a basal caseid. ''Callibrachions sharp teeth and unenlarged ribcage indicate that this animal was likely faunivorous. Description ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sphenacodont
Sphenacodontia is a stem-based clade of derived synapsids. It was defined by Amson and Laurin (2011) as "the largest clade that includes ''Haptodus baylei'', ''Haptodus garnettensis'' and '' Sphenacodon ferox'', but not ''Edaphosaurus pogonias''". They first appear during the Late Pennsylvanian (Upper Carboniferous) epoch. From the end of the Carboniferous to the end of the Permian, most of them remained large, with only some secondarily becoming small in size. Basal Sphenacodontia constitute a transitional evolutionary series from early pelycosaurs to ancestral therapsids (which in turn were the ancestors of more advanced forms and finally the mammals). One might say that the sphenacodontians are proto-therapsids (even though there is almost a 30-million-years gap between the separation of the ancestors of therapsids from other sphenacodontians and the first appearance of therapsids in the fossil record). Characteristics The defining characteristics include a thickening of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cutleria Wilmarthi
''Cutleria'' is an extinct genus of basal sphenacodontids or derived stem- sphenacodontoid known from the Early Permian period (Sakmarian stage) of the Colorado, United States. It contains a single species, ''Cutleria wilmarthi''. Discovery ''Cutleria'' is known only from the holotype specimen USNM 22099, a fractured but three-dimensionally preserved, a nearly complete skull and articulated partial postcranial skeleton (including vertebral column, ribs and several girdle and limb elements). It was collected at locality 3, near Placerville of San Miguel County, Colorado, from the Cutler Formation, dating to the Sakmarian stage of the Cisuralian series. MCZ 2987, a tip of the rostrum and some teeth collected 2.5 km from the type locality (from localities 11-13), was originally referred to ''C. wilmarthi'' by Lewis and Vaughn (1965). A redescription of sphenacodonts by Michel Laurin (1993 and 1994), revealed that it can't be assigned to any named sphenacodon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Datheosaurus
''Datheosaurus'' is an extinct genus of caseasaur. It was at least in length. It lived during the Latest Carboniferous to Early Permian in Poland. Discovery and history It was originally described in 1905 on a basis of a specimen from late Carboniferous deposits in Poland. It was later considered a synonym of ''Haptodus'' by several authors, but subsequent examination has found it be a caseid rather a sphenacodont. This was confirmed by cladistic analysis, which recovered ''Datheosaurus'' as a basal caseid Caseidae are an extinct family of basal synapsids that lived from the Late Carboniferous to Middle Permian between about 300 and 265 million years ago. Fossils of these animals come from the south-central part of the United States (Texas, Oklaho ... References Caseasaurs Prehistoric synapsid genera Carboniferous synapsids Cisuralian synapsids of Europe Fossil taxa described in 1904 {{Paleo-synapsid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poland
Poland, officially the Republic of Poland, is a country in Central Europe. It is divided into 16 administrative provinces called voivodeships, covering an area of . Poland has a population of over 38 million and is the fifth-most populous member state of the European Union. Warsaw is the nation's capital and largest metropolis. Other major cities include Kraków, Wrocław, Łódź, Poznań, Gdańsk, and Szczecin. Poland has a temperate transitional climate and its territory traverses the Central European Plain, extending from Baltic Sea in the north to Sudeten and Carpathian Mountains in the south. The longest Polish river is the Vistula, and Poland's highest point is Mount Rysy, situated in the Tatra mountain range of the Carpathians. The country is bordered by Lithuania and Russia to the northeast, Belarus and Ukraine to the east, Slovakia and the Czech Republic to the south, and Germany to the west. It also shares maritime boundaries with Denmark and Sweden. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asselian
In the geologic timescale, the Asselian is the earliest geochronologic age or lowermost chronostratigraphic stage of the Permian. It is a subdivision of the Cisuralian Epoch or Series. The Asselian lasted between and million years ago (Ma). It was preceded by the Gzhelian (the latest or uppermost subdivision in the Carboniferous) and followed by the Sakmarian. Stratigraphy The Asselian Stage was introduced into scientific literature in 1954, when the Russian stratigrapher V.E. Ruzhenchev split it from the Artinskian. At that moment the Artinskian still encompassed most of the lower Permian – its current definitions are more restricted. The Asselian is named after the Assel River in the southern Ural Mountains of Kazakhstan and Bashkortostan. The base of the Asselian Stage is at the same time the base of the Cisuralian Series and the Permian System. It is defined as the place in the stratigraphic record where fossils of the conodont ''Streptognathodus isolatus'' first appear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Germany
Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated between the Baltic and North seas to the north, and the Alps to the south; it covers an area of , with a population of almost 84 million within its 16 constituent states. Germany borders Denmark to the north, Poland and the Czech Republic to the east, Austria and Switzerland to the south, and France, Luxembourg, Belgium, and the Netherlands to the west. The nation's capital and most populous city is Berlin and its financial centre is Frankfurt; the largest urban area is the Ruhr. Various Germanic tribes have inhabited the northern parts of modern Germany since classical antiquity. A region named Germania was documented before AD 100. In 962, the Kingdom of Germany formed the bulk of the Holy Roman Empire. During the 16th ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Llewellyn Price
Llewellyn Ivor Price (October 9, 1905 – June 9, 1980) was one of the first Brazilian paleontologists. His work contributed not only to the development of Brazilian but also to global paleontology. He collected '' Staurikosaurus'', the first dinosaur discovered in Brazil. Biography Price was born in Santa Maria. The son of American parents, he studied chemistry and graduated in zoology and geology in the United States. After being professor at Harvard he returned to Brazil. He died of a heart attack in Rio Grande do Sul. Awards * In 1980 he was awarded the ''José Bonifácio de Andrada e Silva'' prize by the Sociedade Brasileira de Geologia The Sociedade Brasileira de Geologia is a learned society, technical and scientific society that aims brings to bring together Brazilian geologists, to disseminate technical and scientific information, and to participate in national decisions invo ....http://www.sbgeo.org.br/index.php/sbgeo/realizacoes Sociedade Brasileira de Geolog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
