Archosauromorphs Fossil range: Middle Permian - Recent
Trilophosaurus, a primitive archosauromorph
Scientific classification
Kingdom: Animalia Phylum: Chordata Class: Sauropsida Subclass: Diapsida Infraclass: Archosauromorpha von Huene, 1946
Orders
See text The Permian is a geologic period that extends from about 299. ... Image File history File links Trilophosaurus_BW.jpg‎ File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Archosauromorpha Trilophosaur User:ArthurWeasley:Archive1 Wikipedia:WikiProject Dinosaurs/Image review/Archive January 2007 ... Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. ... Animalia redirects here. ... Typical Classes See below Chordates (phylum Chordata) are a group of animals that includes the vertebrates, together with several closely related invertebrates. ... Clades Subclass Anapsida Subclass Diapsida Infraclass Lepidosauromorpha Infraclass Archosauromorpha Sauropsids are a diverse group of mostly egg-laying vertebrate animals. ... Groups See Text Diapsids (two arches) are a group of tetrapod animals that developed two holes (temporal fenestra) in each side of their skulls, about 300 million years ago during the late Carboniferous period. ... Friedrich von Huene (March 22, 1875 – April 4, 1969) was a German paleontologist who named more dinosaurs in the early 20th century than anyone else in Europe. ... Year 1946 (MCMXLVI) was a common year starting on Tuesday. ...

Archosauromorpha (Greek for "ruling lizard forms") is an Infraclass of diapsid reptiles that first appeared during the late Permian and became more common during the Triassic. Included in this infraclass are the orders Rhynchosauria, Trilophosauridae, Prolacertiformes, Archosauriformes, and, tentatively, the Choristodera. While superficially these reptiles vary in appearance (at one time they were even included in different subclasses-- the Trilophosaurs were considered Euryapsids, and the Rhynchosaurs were considered lepidosaurs and were included in the same order as the tuatara), they are actually united by a number of small skeletal and skull-related details that suggest they form a clade that descended from a single common ancestor. Groups See Text Diapsids (two arches) are a group of tetrapod animals that developed two holes (temporal fenestra) in each side of their skulls, about 300 million years ago during the late Carboniferous period. ... Subclasses Anapsida Diapsida Synonyms Reptilia Laurenti, 1768 Reptiles are tetrapods and amniotes, animals whose embryos are surrounded by an amniotic membrane, and members of the class Sauropsida. ... The Permian is a geologic period that extends from about 299. ... The Triassic is a geologic period that extends from about 251 to 200 Ma (million years ago). ... Genera Mesosuchus Howesia Stenaulorhynchys Rhynchosaurus Otischalia Isalorhynchus Hyperodepedon Rhynchosaurs were a group of unusual Triassic diapsid reptiles related to the archosaurs. ... Genera Trilophosaurus Tricuspisaurus Variodens Trilophosaurs were lizard-like Triassic diapsid reptiles related to the archosaurs. ... Families See text Prolacertiformes (sometimes called Protorosaurs) were a bizarre order of diapsid reptiles that lived during the Permian and Triassic Periods. ... Groups Proterosuchidae     Erythrosuchidae         Euparkeriidae             Archosauria Archosauriformes (Greek for ruling reptiles, + form) are a clade of diapsid reptiles that developed from Archosauromorph ancestors some time in the Late Permian (roughly 250 million years ago). ... Groups Cteniogenidae Simoedosauridae Champsosauridae Choristodera is an order of semi-aquatic diapsid reptiles which ranged from the Middle Jurassic, or possibly Late Triassic, to upper Eocene, or upper Oligocene. ... Euryapsida are a group of tetrapod animals that are distinguished by a single opening behind the orbit (temporal fenestra). ... Orders Sphenodontia Squamata The Lepidosauria are reptiles with overlapping scales. ... Species Sphenodon punctatus (Gray, 1842) Sphenodon guntheri Buller, 1877 Sphenodon diversum (extinct) The tuatara is a reptile of the family Sphenodontidae, endemic to New Zealand. ... It has been suggested that Clade be merged into this article or section. ... Missing link is a term for a transitional form from the fossil record that connects an earlier species to a later one, or which connects two different species to an earlier ancestor. ...

Of the five taxa mentioned above, the first three died out at or prior to the end Triassic extinction. The Choristoderans continued as a minor group until the Miocene, and the Archosauriformes were important factors in early Triassic environments before giving rise to the even more successful Archosauria. Comparison of the intensity of the T-J extinction event, labeled here End Tr to other extinction events in the last 500 million years. ... The Miocene epoch is a period of time that extends from about 23 to 5. ... -1...

Taxonomy

Classification

• Subclass Diapsida
  • Infraclass ARCHOSAUROMORPHA
    • Family Euparkeriidae
    • Family Erythrosuchidae
    • Family Proterochampsidae
    • Family Proterosuchidae
    • Order Choristodera
    • Order Prolacertiformes
    • Order Rhynchosauria
    • Order Trilophosauria
    • Division Archosauria
      • Subdivision Crurotarsi
        • Order Aetosauria
        • Order Phytosauria
        • Order Rauisuchia
        • Superorder Crocodylomorpha
          • Order Crocodilia
      • Subdivision Avemetatarsalia
        • Order Pterosauria
        • Superorder Dinosauria
          • Order Ornithischia
          • Order Saurischia

Classes Ichthyosauria Sauropterygia Lepidosauria Archosauria Diapsids (two arches) are a group of tetrapod animals that developed two holes (temporal fenestra) in each side their skulls, about 300 million years ago during the late Carboniferous period. ... Binomial name Euparkeria capensis Broom, 1913a Is considered to be one of the dinosaurs ancestors. ... Genera see Taxonomy Erythrosuchidae are a family of large basal archosaurian carnivores that lived from the later Early Triassic (Olenekian) to the early Middle Triassic (Anisian). ... Genera see Taxonomy Proterosuchidae (or Chasmatosuchidae) are an early, most certainly paraphyletic, assemblage of basal archosaurs whose fossils are known from the the Latest Permian of Russia and the Early Triassic of southern Africa, Russia, China, Australia, and Antarctica. ... Groups Cteniogenidae Simoedosauridae Champsosauridae Choristodera is an order of semi-aquatic diapsid reptiles which ranged from the Middle Jurassic, or possibly Late Triassic, to upper Eocene, or upper Oligocene. ... Families See text Prolacertiformes (sometimes called Protorosaurs) were a bizarre order of diapsid reptiles that lived during the Permian and Triassic Periods. ... Genera Mesosuchus Howesia Stenaulorhynchys Rhynchosaurus Otischalia Isalorhynchus Hyperodapedon Rhynchosaurs were a group of unusual Triassic diapsid reptiles related to the archosaurs. ... Genera Trilophosaurus Tricuspisaurus Variodens Trilophosaurs were lizard-like Triassic diapsid reptiles related to the archosaurs. ... Groups Pterosauria Crocodylia (crocodiles) Dinosauria    Aves (birds) Archosaurs (Greek for ruling reptiles) are a group of diapsid reptiles that first appeared during the late Permian (roughly 250 million years ago). ... Subtaxa Phytosauridae Prestosuchidae Ornithosuchidae Stagonolepididae Rauisuchidae Poposauridae Crocodylomorpha     Sphenosuchia     Crocodilia Crurotarsi (cross-ankles) is a node-based taxon created by Paul Sereno in 1991 to supplant the old term Pseudosuchia. ... Genera Aetosaurus Calyptosuchus Coahomasuchus Desmatosuchus Longosuchus Neoaetosauroides Paratypothorax Redondasuchus Stagonolepis Tecovasuchus Typothorax The Aetosaurs (family Stagonolepididae order Aetosauria) are an extinct clade of heavily armoured, medium to large sized, Late Triassic herbivorous archosaurs. ... Genera  ?Centemodon Paleorhinus Angistorhinus Brachysuchus Smilosuchus Leptosuchus Rutiodon Pseudopalatinae Nicrosaurus  ?Belodon Pseudopalatus Redondasaurus Angistorhinopsis Mystriosuchus Phytosaurs - family Phytosauridae or Parasuchidae - were a group of large (2 to 12 meters long - average size 3 to 4 meters) semi-aquatic predatory archosaurs that flourished during the Late Triassic period. ... Families Family Prestosuchidae Family Rauisuchidae Family Poposauridae Rauisuchia are a poorly known assemblage of predatory and mostly large (often 4 to 6 meters) Triassic archosaurs. ... Groups see taxonomy The Crocodylomorpha are an important group of archosaurs that include the living crocodilians and their extinct relatives. ... Families Gavialidae Alligatoridae Crocodylidae Crocodilia is an order of large reptiles that appeared about 84 million years ago in the Late Cretaceous Period (Campanian stage). ... Avemetatarsalia (bird feet) is a group name established by Benton in 1999 for the clade consisting of Scleromochlus and Ornithodira. ... Suborders Rhamphorhynchoidea Pterodactyloidea Pterosaurs (TEH-row-sore, winged lizards) were flying reptiles of the clade Pterosauria. ... Orders & Suborders Saurischia Sauropodomorpha Theropoda Ornithischia Thyreophora Ornithopoda Marginocephalia Dinosaurs were vertebrate animals that dominated the terrestrial ecosystem for over 160 million years, first appearing approximately 230 million years ago. ... Suborders Thyreophora Cerapoda    Ornithopoda    Marginocephalia Ornithischia is an order of beaked, herbivorous dinosaurs. ... Groups Sauropodomorpha    Saturnalia    Prosauropoda    Sauropoda Theropoda    Eoraptor    Herrerasauridae    Ceratosauria    Tetanurae       Aves(extant) Saurischians (from the Greek Saurischia meaning lizard hip) are one of the two orders/branches of dinosaurs. ...

Phylogeny

Archosauromorpha

 |--+--Rhynchosauria | `--+-?Teraterpeton | `--Trilophosauria `--+--Prolacertiformes `--Archosauriformes |-?Uatchitodon |--Proterosuchidae `--+-?Erythrosuchidae `--+-?Heleosaurus `--+--Euparkeriidae `--Avesuchia |-?Turfanosuchus |--Proterochampsidae `--+--Yonghesuchus `--Archosauria |--Crurotarsi (crocodiles and relatives) `--Ornithodira (dinosaurs, pterosaurs, and birds) 

Genera Mesosuchus Howesia Stenaulorhynchys Rhynchosaurus Otischalia Isalorhynchus Hyperodapedon Rhynchosaurs were a group of unusual Triassic diapsid reptiles related to the archosaurs. ... Families See text Prolacertiformes (sometimes called Protorosaurs) were a bizarre order of diapsid reptiles that lived during the Permian and Triassic Periods. ... Groups Proterosuchidae     Erythrosuchidae         Euparkeriidae             Archosauria Archosauriformes (Greek for ruling reptiles, + form) are a clade of diapsid reptiles that developed from Archosauromorph ancestors some time in the Late Permian (roughly 250 million years ago). ... Genera see Taxonomy Proterosuchidae (or Chasmatosuchidae) are an early, most certainly paraphyletic, assemblage of basal archosaurs whose fossils are known from the the Latest Permian of Russia and the Early Triassic of southern Africa, Russia, China, Australia, and Antarctica. ... Genera see Taxonomy Erythrosuchidae are a family of large basal archosaurian carnivores that lived from the later Early Triassic (Olenekian) to the early Middle Triassic (Anisian). ... Groups Pterosauria Crocodylia (crocodiles) Dinosauria    Aves (birds) Archosaurs (Greek for ruling reptiles) are a group of diapsid reptiles that first appeared during the late Permian (roughly 250 million years ago). ... Subtaxa Phytosauridae Prestosuchidae Ornithosuchidae Stagonolepididae Rauisuchidae Poposauridae Crocodylomorpha     Sphenosuchia     Crocodilia Crurotarsi (cross-ankles) is a node-based taxon created by Paul Sereno in 1991 to supplant the old term Pseudosuchia. ... Superorders Dinosauromorpha    Lagosuchians    Dinosauria Pterosauromorpha    Pterosauria    Scleromochlus    Sharovipteryx Ornithodira is a division of the Archosauromorpha (and perhaps Archosauria) clade. ...

External links

• Palaeos
• Paleofiles - lists taxa