|
Pietraroiasuchus
''Pietraroiasuchus'' is an extinct genus of hylaeochampsid eusuchian crocodylomorph from the Pietraroja Plattenkalk of the southern Apennines, Italy. Below is a cladogram showing the phylogenetic In biology, phylogenetics (; from Greek φυλή/ φῦλον [] "tribe, clan, race", and wikt:γενετικός, γενετικός [] "origin, source, birth") is the study of the evolutionary history and relationships among or within groups o ... placement of ''Pietraroiasuchus'' from Buscalioni ''et al.'', 2011: References Early Cretaceous crocodylomorphs of Europe Early Cretaceous reptiles of Europe Prehistoric pseudosuchian genera {{paleo-archosaur-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hylaeochampsidae
Hylaeochampsidae is an extinct family (biology), family of basal (phylogenetics), basal eusuchian Crocodylomorpha, crocodylomorphs thought to be closely related to the order Crocodylia. Classification Hylaeochampsidae was first constructed by Charles William Andrews in 1913 to include just one member: ''Hylaeochampsa''. However, a new genus named ''Iharkutosuchus'' was described in 2007 and was found to be a sister taxon of ''Hylaeochampsa'', and thus a member of the family Hylaeochampsidae. The genus ''Heterosuchus'', named in 1887, may also be a member of the family. However, it is likely to be synonym (taxonomy), synonymous with ''Hylaeochampsa'' and has been considered a ''nomen dubium'' by James M. Clark and Mark Norell. Clark and Norell also claimed that there is no evidence to suggest that the two genera form a true clade distinct from other eusuchians, because remains associated with ''Heterosuchus'' are to fragmentary to show any clear phylogenetic relationship. A fourth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hylaeochampsid
Hylaeochampsidae is an extinct family of basal eusuchian crocodylomorphs thought to be closely related to the order Crocodylia. Classification Hylaeochampsidae was first constructed by Charles William Andrews in 1913 to include just one member: ''Hylaeochampsa''. However, a new genus named ''Iharkutosuchus'' was described in 2007 and was found to be a sister taxon of ''Hylaeochampsa'', and thus a member of the family Hylaeochampsidae. The genus ''Heterosuchus'', named in 1887, may also be a member of the family. However, it is likely to be synonymous with ''Hylaeochampsa'' and has been considered a ''nomen dubium'' by James M. Clark and Mark Norell. Clark and Norell also claimed that there is no evidence to suggest that the two genera form a true clade distinct from other eusuchians, because remains associated with ''Heterosuchus'' are to fragmentary to show any clear phylogenetic relationship. A fourth genus called ''Pietraroiasuchus'' was assigned to Hylaeochampsidae in 2011. A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hylaeochampsa Vectiana
''Hylaeochampsa'' is an extinct genus of eusuchian crocodylomorphs. It is known only from a partial skull recovered from Barremian-age rocks of the Lower Cretaceous Vectis Formation ( Wealden Group) of the Isle of Wight. This skull, BMNH R 177, is short and wide, with a eusuchian-like palate and inferred enlarged posterior teeth that would have been suitable for crushing.Owen, R. (1874). Monograph on the fossil Reptilia of the Wealden and Purbeck formations. Supplement no. V. Dinosauria (''Iguanodon''). ealden and Purbeck. ''The Palaeontographical Society, London'' 1873:1-18 ''Hylaochampsa'' was described by Richard Owen in 1874, with ''H. vectiana'' as the type species. It may be the same genus as the slightly older '' Heterosuchus'', inferred to have been of similar evolutionary grade, but there is no overlapping material as ''Heterosuchus'' is known only from vertebrae. If the two could be shown to be synonyms, ''Hylaeochampsa'' would have priority because it is the older ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iharkutosuchus
''Iharkutosuchus'' (" Iharkút crocodile", after where it was found) is an extinct genus of basal eusuchian crocodyliform. Its fossils have been found in the Santonian-age Upper Cretaceous Csehbánya Formation in the Bakony Mountains of western Hungary. Description It is based on MTM 2006.52.1, a nearly complete skull, and several other partial skulls, isolated skull bones, and numerous teeth are also known. ''Iharkutosuchus'' was a small crocodyliform (skull length , estimated body length ). Its skull was low, and the snout was short. ''Iharkutosuchus'' is unusual in its heterodonty: some of its teeth were complex and multicusped, like mammal teeth. The structure of the skull indicates that it could grind food with a mobile lower jaw, and together with the teeth suggest a diet of fibrous plant material. Classification The genus was described in 2007 by Attila Ősi and colleagues. The type species is ''I. makadii'', named for László Makádi. A 2011 phylogenetic stu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pachycheilosuchus Trinquei
''Pachycheilosuchus'' (meaning "thick lipped crocodile") is an extinct genus of neosuchian from the Early Cretaceous of Texas, United States. Previously known, in part, as the "Glen Rose form", this crocodylomorph is notable for its procoelous vertebrae, otherwise found only in derived eusuchian crocodilians (the vertebrae articulate with a cup on the anterior surface and a rounded posterior surface), a thick margin on the maxillae (the main tooth-bearing bones of the upper jaw; thus "thick lipped crocodile"), and a shield of armor on the neck formed by the fusion of six individual scutes. Description ''Pachycheilosuchus'' is based on SMU 75278, a right maxilla, with the remains of at minimum 13 other individuals also known, representing most of the skeleton except hands, feet, and part of the skull. The remains were recovered near the top of the Glen Rose Formation of Erath County in central Texas, in rocks dating from the early Albian faunal stage. The fossils were found in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neosuchia
Neosuchia is a clade within Mesoeucrocodylia that includes all modern extant crocodilians and their closest fossil relatives. It is defined as the most inclusive clade containing all crocodylomorphs more closely related to ''Crocodylus niloticus'' (the Nile Crocodile) than to ''Notosuchus terrestris''. Members of Neosuchia generally share a crocodilian-like bodyform adapted to freshwater aquatic life, as opposed to the terrestrial habits of more basal crocodylomorph groups. The earliest neosuchian is suggested to be the Early Jurassic ''Calsoyasuchus'', which lived during the Sinemurian and Pliensbachian stages in North America. It is often identified as a member of Goniopholididae, though this is disputed, and the taxon may lie outside Neosuchia, which places the earliest records of the group in the Middle Jurassic. Characteristics A tooth notch between the maxilla and premaxilla is a basal characteristic of the Neosuchia, although it is lost in some more derived forms, most nota ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pietraroja Plattenkalk
The Pietraroia Plattenkalk is a Cretaceous geologic formation located in the Italian municipality of Pietraroja, near Benevento, in region. It is of age. remains diagnostic to the level are among the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allodaposuchus Precedens
''Allodaposuchus'' is an extinct genus of crocodyliforms that lived in what is now southern Europe during the Campanian and Maastrichtian stages of the Late Cretaceous. Although generally classified as a non-crocodylian eusuchian crocodylomorph, it is sometimes placed as one of the earliest true crocodylians. ''Allodaposuchus'' is one of the most common Late Cretaceous crocodylomorphs from Europe, with fossils known from Romania, Spain, and France. Description Like many other Cretaceous crocodylomorphs, ''Allodaposuchus'' has a relatively small body size compared to living crocodylians. The largest known specimen of ''Allodaposuchus'' belongs to an individual that was probably around long. Although the shape varies between species, in general ''Allodaposuchus'' has a short, flattened, and rounded skull. ''Allodaposuchus precedens'' has a brevirostrine or "short-snouted" skull with a snout about the same length as the skull table (the region of the skull behind the eye sockets) a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allodaposuchus
''Allodaposuchus'' is an extinct genus of crocodyliforms that lived in what is now southern Europe during the Campanian and Maastrichtian stages of the Late Cretaceous. Although generally classified as a non-crocodylian eusuchian crocodylomorph, it is sometimes placed as one of the earliest true crocodylians. ''Allodaposuchus'' is one of the most common Late Cretaceous crocodylomorphs from Europe, with fossils known from Romania, Spain, and France. Description Like many other Cretaceous crocodylomorphs, ''Allodaposuchus'' has a relatively small body size compared to living crocodylians. The largest known specimen of ''Allodaposuchus'' belongs to an individual that was probably around long. Although the shape varies between species, in general ''Allodaposuchus'' has a short, flattened, and rounded skull. ''Allodaposuchus precedens'' has a brevirostrine or "short-snouted" skull with a snout about the same length as the skull table (the region of the skull behind the eye sockets) a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Early Cretaceous
The Early Cretaceous ( geochronological name) or the Lower Cretaceous (chronostratigraphic name), is the earlier or lower of the two major divisions of the Cretaceous. It is usually considered to stretch from 145 Ma to 100.5 Ma. Geology Proposals for the exact age of the Barremian-Aptian boundary ranged from 126 to 117 Ma until recently (as of 2019), but based on drillholes in Svalbard the defining early Aptian Oceanic Anoxic Event 1a (OAE1a) was carbon isotope dated to 123.1±0.3 Ma, limiting the possible range for the boundary to c. 122–121 Ma. There is a possible link between this anoxic event and a series of Early Cretaceous large igneous provinces (LIP). The Ontong Java-Manihiki-Hikurangi large igneous province, emplaced in the South Pacific at c. 120 Ma, is by far the largest LIP in Earth's history. The Ontong Java Plateau today covers an area of 1,860,000 km2. In the Indian Ocean another LIP began to form at c. 120 Ma, the Kerguelen P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crocodylia
Crocodilia (or Crocodylia, both ) is an order of mostly large, predatory, semiaquatic reptiles, known as crocodilians. They first appeared 95 million years ago in the Late Cretaceous period (Cenomanian stage) and are the closest living relatives of birds, as the two groups are the only known survivors of the Archosauria. Members of the order's total group, the clade Pseudosuchia, appeared about 250 million years ago in the Early Triassic period, and diversified during the Mesozoic era. The order Crocodilia includes the true crocodiles (family Crocodylidae), the alligators and caimans (family Alligatoridae), and the gharial and false gharial (family Gavialidae). Although the term 'crocodiles' is sometimes used to refer to all of these, crocodilians is a less ambiguous vernacular term for members of this group. Large, solidly built, lizard-like reptiles, crocodilians have long flattened snouts, laterally compressed tails, and eyes, ears, and nostrils at the top of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isisfordia Duncani
''Isisfordia'' is an extinct genus of crocodyliform closely related to crocodilians that lived in Australia during the Middle Cretaceous (Albian–Cenomanian). Description The type species, ''I. duncani''. (named after the discoverer; former Deputy Mayor of Isisford, Ian Duncan) was discovered in the Winton Formation in Isisford, Queensland, Australia in the mid-1990s. Most of the animal was discovered, with the exception of the front portion of the skull. On a later expedition to the location, paleontologists discovered a complete skull which differed from the original specimen in size only. A second species ''I. molnari'' was named in 2019 from a braincase found in the Griman Creek Formation near Lightning Ridge, and the nominal species ''Crocodylus (Bottosaurus) selaslophensis'' Etheridge, 1917, based on a maxillary fragment from the same unit, was referred to ''I. molnari''. Later, however, Hart (2020) noted that the ''selaslophensis'' holotype doesn't overlap with that of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
