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Celtedens Megacephalus
''Celtedens'' is an extinct genus of albanerpetontid amphibian from the Early Cretaceous of England, Spain, Sweden and Italy, and the Late Jurassic of Portugal. Taxonomy * †''Celtedens ibericus'' McGowan and Evans 1995 La Huérguina Formation, Spain, Barremian * †''Celtedens megacephalus'' Costa 1864 Lulworth Formation, United Kingdom, Berriasian Pietraroja Plattenkalk, Italy, Albian * Indeterminate remains attributed to the genus are also known from the Late Jurassic Alcobaça Formation The Alcobaça Formation, previously known as the Guimarota Formation and also known as the Consolação Unit, is a geological formation in Portugal. It dates back to the Kimmeridgian stage of the Late Jurassic. It is an important source of inform ... of Portugal, as well as the earliest Cretaceous (Berriasian) of Sweden. Phylogeny From Daza et al. 2020. References Albanerpetontidae Prehistoric amphibian genera Cretaceous amphibians of Europe Jurassic amphibians of Europe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 specimen(s). Article 67.1 A similar concept is used for suprageneric groups and called a type genus. In botanical nomenclature, these terms have no formal standing under the code of nomenclature, but are sometimes borrowed from zoological nomenclature. In botany, the type of a genus name is a specimen (or, rarely, an illustration) which is also the type of a species name. The species name that has that type can also be referred to as the type of the genus name. Names of genus and family ranks, the various subdivisions of those ranks, and some higher-rank names based on genus names, have such types. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alcobaça Formation
The Alcobaça Formation, previously known as the Guimarota Formation and also known as the Consolação Unit, is a geological formation in Portugal. It dates back to the Kimmeridgian stage of the Late Jurassic. It is an important source of information on the diversity of Late Jurassic mammals. Many of the fossils were collected from the now disused and flooded Camadas de Guimarota coal mine. Vertebrate paleofauna Dinosaur eggs are geographically located in Lisbon District, Portugal. Dinosaur tracks are geographically located in Leiria District, Portugal. Amphibians Ornithischians Indeterminate euornithopod remains located in Lisbon District. Indeterminate stegosaurid remains present in Lisbon District. Saurischians Indeterminate sauropod remains located in Leiria and Lisboa."16.1 Distrito do Leiria, Portugal; 3. Camadas de Alcobaça," and "16.4 Distrito do Lisboa, Portugal; 1. Camadas de Alcobaça," in Weishampel, et al. (2004). Pages 548-549. Turtles Lepido ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cretaceous Spain
The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of the entire Phanerozoic. The name is derived from the Latin ''creta'', "chalk", which is abundant in the latter half of the period. It is usually abbreviated K, for its German translation ''Kreide''. The Cretaceous was a period with a relatively warm climate, resulting in high eustatic sea levels that created numerous shallow inland seas. These oceans and seas were populated with now-extinct marine reptiles, ammonites, and rudists, while dinosaurs continued to dominate on land. The world was ice free, and forests extended to the poles. During this time, new groups of mammals and birds appeared. During the Early Cretaceous, flowering plants appeared and began to rapidly diversify, becoming the dominant group of plants across the Earth by t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jurassic Amphibians Of Europe
The Jurassic ( ) is a geologic period and stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The Jurassic constitutes the middle period of the Mesozoic Era and is named after the Jura Mountains, where limestone strata from the period were first identified. The start of the Jurassic was marked by the major Triassic–Jurassic extinction event, associated with the eruption of the Central Atlantic Magmatic Province. The beginning of the Toarcian Stage started around 183 million years ago and is marked by an extinction event associated with widespread oceanic anoxia, ocean acidification, and elevated temperatures likely caused by the eruption of the Karoo-Ferrar large igneous provinces. The end of the Jurassic, however, has no clear boundary with the Cretaceous and is the only boundary between geological periods to remain formally undefined. By the beginning of the Jurassic, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cretaceous Amphibians Of Europe
The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of the entire Phanerozoic. The name is derived from the Latin ''creta'', "chalk", which is abundant in the latter half of the period. It is usually abbreviated K, for its German translation ''Kreide''. The Cretaceous was a period with a relatively warm climate, resulting in high eustatic sea levels that created numerous shallow inland seas. These oceans and seas were populated with now-extinct marine reptiles, ammonites, and rudists, while dinosaurs continued to dominate on land. The world was ice free, and forests extended to the poles. During this time, new groups of mammals and birds appeared. During the Early Cretaceous, flowering plants appeared and began to rapidly diversify, becoming the dominant group of plants across the Earth by t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prehistoric Amphibian Genera
Prehistory, also known as pre-literary history, is the period of human history between the use of the first stone tools by hominins 3.3 million years ago and the beginning of recorded history with the invention of writing systems. The use of symbols, marks, and images appears very early among humans, but the earliest known writing systems appeared 5000 years ago. It took thousands of years for writing systems to be widely adopted, with writing spreading to almost all cultures by the 19th century. The end of prehistory therefore came at very different times in different places, and the term is less often used in discussing societies where prehistory ended relatively recently. In the early Bronze Age, Sumer in Mesopotamia, the Indus Valley Civilisation, and ancient Egypt were the first civilizations to develop their own scripts and to keep historical records, with their neighbors following. Most other civilizations reached the end of prehistory during the following Iron Age. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Albanerpetontidae
The Albanerpetontidae are an extinct family of small amphibians, native to the Northern Hemisphere during the Mesozoic and Cenozoic. The only members of the order Allocaudata, they are thought to be allied with living amphibians belonging to Lissamphibia. Despite a superficially salamander-like bodyform, their anatomy is strongly divergent from modern amphibians in numerous aspects. The fossil record of albanerpetontids spans over 160 million years from the Middle Jurassic to the beginning of the Pleistocene, about 2.13-2 million years ago. History of Research The earliest specimen of an albanerpetontid to be discovered was that of ''Celtedens megacephalus'' from the Early Cretaceous (Albian) Pietraroja Plattenkalk of Italy, described by Oronzio Gabriele Costa in 1864, and originally placed in the genus ''Triton,'' a junior synonym of the salamander genus ''Triturus''. Jaw elements of albanerpetontids from the Cretaceous of North America were assigned to the salamander genus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shirerpeton
''Shirerpeton'' is an extinct genus of albanerpetontid amphibian from the Early Cretaceous Kuwajima Formation, which is located in Japan.Fujita, M. (2003). "Geological age and correlation of the vertebrate-bearing horizons in the Tetori Group". ''Memoir of the Fukui Prefectural Dinosaur Museum''. 2: 3–14. The type species is ''Shirerpeton isajii'', which was described by Masumoto & Evans in 2018. ''Shirerpeton'' represents the first record of Albanerpetontidae in East Asia and the holotype is SBEI 2459, a small block bearing most of a disarticulated but associated skull with some postcranial Postcrania (postcranium, adjective: postcranial) in zoology and vertebrate paleontology is all or part of the skeleton apart from the skull. Frequently, fossil remains, e.g. of dinosaurs or other extinct tetrapods, consist of partial or isolated s ... elements present as well. Phylogeny From Daza ''et al'' (2020): References {{Taxonbar, from=Q49000628 Albanerpetontidae Fossi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yaksha Perettii
''Yaksha perettii'' is an extinct species of albanerpetontid amphibian, and the only species in the genus ''Yaksha''. It is known from three specimens found in Cenomanian aged Burmese amber from Myanmar. The remains of ''Yaksha perettii'' are the best preserved of all albanerpetontids, which usually consist of isolated fragments or crushed flat, and have provided significant insights in the morphology and lifestyle of the group. Etymology The generic epithet is named after the Yaksha, a class of nature and guardian spirits in Indian religions, while the specific epithet honors Dr. Adolf Peretti, who provided some of the specimens, including the holotype. Discovery The paratype specimen was originally described in 2016 amongst a collection of fossil lizard species from Burmese amber, and was initially identified as a stem-chameleon. However Professor Susan E. Evans, a researcher who has extensively worked on albanerpetontids, recognised the specimen as belonging to the group. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wesserpeton
''Wesserpeton'' is an extinct genus of albanerpetontid amphibian known from the Isle of Wight, southern England. Description ''Wesserpeton'' is known from the holotype NHMUK PV R36521, nearly complete fused frontals and from the referred materials NHMUK PV R36522–36568 and R36595–36611. All specimens were collected from seven localities of the Wessex Formation on the southeastern coast of the Isle of Wight of southern England. The type locality (Bed 38) is exposed at Yaverland while the rest (Bed L2) are exposed high in the cliff at Sudmoor Point but have yielded only NHMUK PV R36539, R36522 and R36553–36558. All specimens are dating to the Barremian stage of the Early Cretaceous. Etymology ''Wesserpeton'' was first named by Steven C. Sweetman and James D. Gardner in 2013 and the type species is ''Wesserpeton evansae''. The generic name is derived from ''Wess'', from Wessex, an ancient British kingdom which included the Isle of Wight, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anoualerpeton
''Anoualerpeton'' is an extinct genus of lissamphibian in the family Albanerpetontidae. It is the oldest and most primitive albanerpetontid known. Fossils have been found of two different species, ''Anoualerpeton priscus'' from the Middle Jurassic (Bathonian) aged Forest Marble and Kilmaluag formations of England and Scotland, and ''Anoualerpeton unicus'' from Late Jurassic-Early Cretaceous (Tithonian-Berriasian) Ksar Metlili Formation of Morocco. ''A. unicus'' is the only named albanerpetontid from Gondwana. Etymology The name "''Anoualerpeton''" is composed of Anoual, the name of a city in the eastern High Atlas (Morocco), in whose relative proximity the type material of the type species ''Anoualerpeton unicus'' was found, and the ancient Greek word ἑρπετόν herpeton, which means 'creeping animal" and is often used in the generic names of fossil amphibians. The epithets "priscus" and "unicus" mean 'old' and 'unique', which refers to the fact that ''Anoualerpeton'' '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Albian
The Albian is both an age of the geologic timescale and a stage in the stratigraphic column. It is the youngest or uppermost subdivision of the Early/Lower Cretaceous Epoch/ Series. Its approximate time range is 113.0 ± 1.0 Ma to 100.5 ± 0.9 Ma (million years ago). The Albian is preceded by the Aptian and followed by the Cenomanian. Stratigraphic definitions The Albian Stage was first proposed in 1842 by Alcide d'Orbigny. It was named after Alba, the Latin name for River Aube in France. A Global Boundary Stratotype Section and Point (GSSP), ratified by the IUGS in 2016, defines the base of the Albian as the first occurrence of the planktonic foraminiferan '' Microhedbergella renilaevis'' at the Col de Pré-Guittard section, Arnayon, Drôme, France. The top of the Albian Stage (the base of the Cenomanian Stage and Upper Cretaceous Series) is defined as the place where the foram species '' Rotalipora globotruncanoides'' first appears in the stratigraphic column. The Alb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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