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Jucaraseps
''Jucaraseps'' is an extinct genus of small squamate lizard known from the Early Cretaceous of Las Hoyas, Spain. It contains a single species, ''Jucaraseps grandipes''. It belonged to the clade Scincogekkonomorpha (containing scleroglossan squamates and those taxa which were more closely related to them than to Iguania) and was related to the clade Scleroglossa as well to Jurassic and Cretaceous taxa '' Eichstaettisaurus'', ''Ardeosaurus'', ''Bavarisaurus'', ''Parviraptor ''Parviraptor'' is a genus of stem-snake (clade Ophidia) containing one species, ''Parviraptor estesi'', from the Late Jurassic (Tithonian) or Early Cretaceous (Berriasian) Purbeck Limestone Formation of Dorset, England. A second species, ''Parv ...'', '' Yabeinosaurus'' and '' Sakurasaurus'' References Cretaceous lizards Fossils of Spain La Huérguina Formation Fossil taxa described in 2012 {{paleo-lizard-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eichstaettisaurus
''Eichstaettisaurus'' (meaning "Eichstätt lizard") is a genus of lizards from the Late Jurassic and Early Cretaceous of Germany, Spain, and Italy. With a flattened head, forward-oriented and partially symmetrical feet, and tall claws, ''Eichstaettisaurus'' bore many adaptations to a climbing lifestyle approaching those of geckoes. The type species, ''E. schroederi'', is among the oldest and most complete members of the Squamata, being known by one specimen originating from the Tithonian-aged Solnhofen Limestone of Germany. A second species, ''E. gouldi'', was described from another skeleton found in the Matese Mountains of Italy. Despite being very similar to ''E. schroederi'', it lived much later, during the Albian stage. Fossils of both species show exceptional preservation due to deposition in low-oxygen marine environments. Initially named as a species of the genus '' Ardeosaurus'' by Ferdinand Broili in 1938, ''E. schroederi'' has had a convoluted taxonomic history. It was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2012 In Paleontology
Note: In 2012, the International Code of Zoological Nomenclature was amended, with new regulations allowing the publication of new names and nomenclatural acts in zoology after 2011, in works "produced in an edition containing simultaneously obtainable copies by a method that assures (...) widely accessible electronic copies with fixed content and layout", provided that the work is registered in ZooBank before it is published, the work itself states the date of publication with evidence that registration has occurred, and the ZooBank registration states both the name of an electronic archive intended to preserve the work and the ISSN or ISBN associated with the work. New scientific names appearing in electronic works are not required to be registered in ZooBank, only the works themselves are. Works containing descriptions of some of the taxa listed below were not printed on paper in 2012; however, the taxa that were described in works which were registered in ZooBank in 2012 are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scincogekkonomorpha
Scincogekkonomorpha is a clade (evolutionary grouping) of lizards that includes scleroglossans and all lizards more closely related to scleroglossans than to iguanians. These "stem" scleroglossans include extinct lizards from the Late Jurassic and Early Cretaceous such as '' Bavarisaurus'', '' Eichstaettisaurus'', ''Liushusaurus'', and '' Scandensia''. Scincogekkonomorpha was named in 1961 and is now occasionally used as a stem-based taxon in contrast to the node-based taxon Scleroglossa. According to phylogenies based on morphological characteristics, Scincogekkonomorpha is the sister taxon of Iguania and together they make up crown group In phylogenetics, the crown group or crown assemblage is a collection of species composed of the living representatives of the collection, the most recent common ancestor of the collection, and all descendants of the most recent common ancestor. ... Squamata, the smallest clade including all living snakes and lizards. References Te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
La Huérguina Formation
The La Huérguina Formation (also known as the Calizas de La Huérguina Formation, La Huérguina Limestone Formation or as the Una Formation) is a geological formation in Spain whose strata date back to the Barremian stage of the Early Cretaceous.Martínez et al., 2017 Las Hoyas is a Konservat-Lagerstätte within the formation, located near the city of Cuenca, Spain. The site is mostly known for its exquisitely preserved dinosaurs, especially enantiornithines.Weishampel et al., 2004, pp.556-563 The lithology of the formation mostly consists of lacustarine limestone deposited in a freshwater wetland environment. Las Hoyas Taphonomy As a Konservat-Lagerstätten, the preservation is exceptional. This may be a result of three factors: Microbial mats, Obruption and Stagnation. Microbial mats may be responsible for the preservation of soft tissue in many fossils from Las Hoyas, like ''Pelecanimimus''' crest. The iron carbonate depositions, a result from bacterial metabolism which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cretaceous
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 Ear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossils Of Spain
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood and DNA remnants. The totality of fossils is known as the ''fossil record''. Paleontology is the study of fossils: their age, method of formation, and evolutionary significance. Specimens are usually considered to be fossils if they are over 10,000 years old. The oldest fossils are around 3.48 billion years old to 4.1 billion years old. Early edition, published online before print. The observation in the 19th century that certain fossils were associated with certain rock strata led to the recognition of a geological timescale and the relative ages of different fossils. The development of radiometric dating techniques in the early 20th century allowed scientists to quantitatively measure the absolute ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cretaceous Lizards
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] |
Yabeinosaurus
''Yabeinosaurus'' is an extinct genus of lizard from the Early Cretaceous Jehol Group of northeastern China. The type species ''Yabeinosaurus tenuis'' is known from many well-preserved skeletons belonging to both juvenile and adult individuals. For about 60 years ''Yabeinosaurus'' was known only from juvenile specimens, leading scientists to believe that it was a small lizard with weakly developed bones. Because of this, it was thought to be closely related to geckos. Larger specimens up to snout‐vent length. long were first described in 2005, showing that ''Yabeinosaurus'' was a relatively large lizard when fully grown. Recent phylogenetic analyses indicate that ''Yabeinosaurus'' is not closely related to geckos but rather a very basal ("primitive") lizard close to the split between Iguania and Scleroglossa, one of the earliest divergences in the evolutionary history of lizards. Whether or not it lies outside this split or within Scleroglossa is uncertain. In 2011 a fossi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parviraptor
''Parviraptor'' is a genus of stem-snake (clade Ophidia) containing one species, ''Parviraptor estesi'', from the Late Jurassic (Tithonian) or Early Cretaceous (Berriasian) Purbeck Limestone Formation of Dorset, England. A second species, ''Parviraptor gilmorei'', was described from the Late Jurassic Morrison Formation of Western North America;Foster, J. (2007). "Table 2.1: Fossil Vertebrates of the Morrison Formation." ''Jurassic West: The Dinosaurs of the Morrison Formation and Their World''. Indiana University Press. pp. 58-59. it was present in stratigraphic zone 4.Foster, J. (2007). "''Enneabatrachus hechti''" ''Jurassic West: The Dinosaurs of the Morrison Formation and Their World''. Indiana University Press. p. 137. However, the second species was subsequently transferred to a separate genus '' Diablophis''. An indeterminate species is known from the Bathonian aged Kirtlington Mammal Bed ( Kilmaluag Formation, Scotland). Description The shape, length, and body form o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bavarisaurus
''Bavarisaurus'' ('Bavarian lizard') is an extinct genus of basal squamate found in the Solnhofen limestone near Bavaria, Germany.''Bavarisaurus'' at .org A found in the region of a '' Compsognathus'', a small |
Ardeosaurus
''Ardeosaurus'' is an extinct genus of basal lizards, known from fossils found in the Late Jurassic Solnhofen Plattenkalk of Bavaria, southern Germany. It was originally thought to have been a species of ''Homeosaurus''. ''Ardeosaurus'' was originally considered to be a distant relative to modern geckos, and had a similar physical appearance. Evans and colleagues, however, showed it in 2005 to be a basal squamate outside the crown group of all living lizards and snakes.Evans, S. E., Wang, Y., & Li, C. (2005). The early Cretaceous lizard genus Yabeinosaurus from China: resolving an enigma. Journal of Systematic Palaeontology, 3, 319-335. A subsequent study conducted by Simões and colleagues in 2017 corroborated its initial proposed phylogenetic placement, indicating that ''Ardeosaurus'' was a stem-gekkota Geckos are small, mostly carnivorous lizards that have a wide distribution, found on every continent except Antarctica. Belonging to the infraorder Gekkota, geckos are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
