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Ardeosauridae
Ardeosauridae is an extinct family of lizards known from the Late Jurassic of Germany and North America and Early Cretaceous of Mongolia, with other potential species elsewhere from Europe and Asia over the same time period. The position of this family is debated; they are often recovered as gekkonomorphs, but other studies have found them to be basal squamates, whereas others have found them to be the basalmost members of the Scincoidea or Iguania. The following genera are known: * †'' Ardeosaurus'' Meyer, 1855 * ? †'' Chometokadmon'' Costa, 1864 * †'' Gurvelus'' Alifanov, 2019 * ''† Helioscopos'' Meyer et al. 2023 * †'' Limnoscansor'' Meyer et al. 2023 * ? †'' Palaeolacerta'' Cocude-Michel, 1961 * †?'' Schoenesmahl'' Conrad, 2018 * ? †'' Yabeinosaurus'' Endo and Shikama, 1942 References {{Taxonbar, from=Q17816559 Prehistoric reptile families † A dagger, obelisk, or obelus is a typographical mark that usually indicates a footnote if an aste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limnoscansor
''Limnoscansor'' (International Phonetic Alphabet, ) is an extinct genus of Ardeosauridae, ardeosaurid lizard from the Late Jurassic Solnhofen Limestone of Germany. Discovery and naming The holotype and only known specimen of ''Limnoscansor'', given the designation CM 4026, was discovered in Wintershof Quarry near Eichstätt in the rocks of the Solnhofen Limestone, a geological unit well-known for its exceptional preservation of small animals. It was originally named and described by Normal MacDowell Grier in the Annals of the Carnegie Museum of Natural History in 1914 as a new species of the rhynchocephalian ''Homeosaurus'', which is known from Solnhofen as well as other Jurassic-aged units. He gave it the species epithet, ''"digitatellus"'', in reference to the apparently fragile digits of the specimen, which appear to have been damaged some time after the animal died, but before it was fossilized.Grier N. 1914A new rhynchocephalian from the Jura of Solenhofen Ann Carnegie Mus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helioscopos
''Helioscopos'' ( ) is an extinct genus of ardeosaurid lizard from the Late Jurassic Morrison Formation of the United States. Discovery and naming The type specimen of ''Helioscopos'', given the designation DINO 15914 (previously DNM 15914), was discovered at Dinosaur National Monument from a locality called "Quarry #317". This locality is part of the famous and well-studied Morrison Formation in Utah. When the specimen was originally reported on in 1998, it was suggested to belong to the genus '' Paramacellodus'', which is known from throughout the Northern Hemisphere in the Late Jurassic. However, the specimen was re-examined in 2023 by a team of authors including Dalton Meyer, Chase Brownstein, Kelsey Jenkins, and Jacques Gauthier in the same publication that they named the new genus ''Limnoscansor''. This re-examination included CT-scanning the specimen, which was preserved in 3D, to study each of bone more thoroughly. Meyer and colleagues determined that the specimen d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scincoidea
Scincomorpha is an infraorder and clade of lizards including skinks (Scincidae) and their close relatives. These include the living families Cordylidae (girdled lizards), Gerrhosauridae (plated lizards), and Xantusiidae (night lizards), as well as many extinct taxa. Other roughly equivalent terms include the suborder Scinciformata, or the superfamily Scincoidea, though different authors use these terms in a broader or more restricted usage relative to true skinks. They first appear in the fossil record about 170 million years ago, during the Jurassic The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately 143.1 Mya. ... period.Evans, S.E. and Jones, M.E.H. (2010). "The Origin, Early History and Diversification of Lepidosauromorph Reptiles," pp. 27-44 in Bandyopadhyay, S. (ed.), ''New Aspects of Mesoz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gurvelus
''Gurvelus'' is an extinct genus of ardeosaurid that lived during the Early Cretaceous epoch. Distribution ''Gurvelus khangaicus'' is known from the Hühteeg Horizon of Mongolia Mongolia is a landlocked country in East Asia, bordered by Russia to the north and China to the south and southeast. It covers an area of , with a population of 3.5 million, making it the world's List of countries and dependencies by po .... References {{Taxonbar, from=Q134892931 Monotypic prehistoric reptile genera Cretaceous reptiles of Asia Fossils of Mongolia Fossil taxa described in 2019 Prehistoric squamates ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gekkonomorpha
Gekkonomorpha is a clade of lizards that includes geckos and their closest relatives. Although it was first named in 1900, Gekkonomorpha was not widely used as a formal taxon until it was given a phylogenetic definition in the 1990s. Under this definition, Gekkonomorpha is a stem-based taxon containing the node-based taxon Gekkota, the group that includes the last common ancestor of all living geckos and its descendants. The extent of Gekkonomorpha beyond gekkotans differs between studies. For example, Lee (1998) defined Gekkonomorpha in such a way that it included not only Gekkota but the legless amphisbaenian and dibamid lizards as well. The phylogenetic analysis of Conrad (2008), which did not support a close relationship between geckos and legless lizards, used Gekkonomorpha in a much more restrictive sense so that it included only Gekkota and a few extinct lizards more closely related to Gekkota than to any other living group of lizards (making them "stem" gekkotans). Some of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chometokadmon
''Chometokadmon'' is an extinct genus of anguimorph lizard from the Early Cretaceous of Italy. The type and only species is ''Chometokadmon fitzingeri'', named by Italian zoologist Oronzio Gabriele Costa in 1864. It is known from only one specimen, a nearly complete skeleton from the comune of Pietraroja in the Apennine Mountains from the sediments of the Pietraroia Plattenkalk. Costa identified the specimen as a lizard, but in 1915 paleontologist Geremia d'Erasmo reclassified the skeleton as that of a rhynchocephalian on the basis of another rhynchocephalian specimen Costa had described, which d'Erasmo thought belonged to the same species. Later studies of the anatomy of these two specimens revealed that they belonged to two different species; Costa's ''Chometokadmon'' was a lizard whereas the other specimen, renamed '' Derasmosaurus'' in honor of d'Erasmo, was a rhynchocephalian. The first detailed description of ''Chometokadmon'' came in 2006, allowing it to be incorporated in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By Charles Lewis Camp
In biology, a taxon (back-formation from ''taxonomy''; : taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion, especially in the context of rank-based (" Linnaean") nomenclature (much less so under phylogenetic nomenclature). If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were presumably set forth in prehistoric times by hunter-gatherers, as suggested by the fairly sophisticated folk taxonomies. Much later, Aristotle, and later still ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lizard Families
This is a list of the extant lizard families. Lizards are an paraphyly, informal group of Squamata, squamates. Taxonomy There are five infraorders which separate the lizards, these are- Diploglossa, Gekkota, Iguania, Platynota and Scincomorpha. This separation is based mainly on morphological similarities between family groups. The Diploglossans and Platynotans are two closely related infraorders which are very diverse families. Very few generalisations can be placed upon these families morphologically. Many species are limbless, while others have fully formed limbs. It is believed that these lizards are the closest lizard relation to the snakes. The Gekkotans are the second most diverse group of lizards. They can be morphologically distinguished by the absence of temporal arches, which allows greater moveability of the head. Most species also have cloacal sacs and fixed eyelids. The Iguanians are another diverse group of lizards. All iguanians are fully limbed. Most species amb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prehistoric Reptile Families
Prehistory, also called pre-literary history, is the period of human history between the first known use of stone tools by hominins 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 years ago. It took thousands of years for writing systems to be widely adopted, with writing having spread to almost all cultures by the 19th century. The end of prehistory therefore came at different times in different places, and the term is less often used in discussing societies where prehistory ended relatively recently. It is based on an old conception of history that without written records there could be no history. The most common conception today is that history is based on evidence, however the concept of prehistory hasn't been completely discarded. In the early Bronze Age, Sumer in Mesopotamia, the Indus Valley Civilis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
