When it was first named in 1972, Almasaurus was placed within its own superfamily, the Almasauroidea.[1] Although the related latiscopid Latiscopus disjunctus possesses exoccipitals that are underplated (a feature that suggests that it is a member of the family Trematosauridae)[2]Almasaurus is not considered to be a trematosaurid because it lacks such underplating.[3]Almasaurus was considered to be a capitosaurian by Warren & Black (1985) because it shared several characters with the group, including a deeply notched squamosal and a lacrimal flexure, while supposedly exhibiting none of the characters associated with trematosaurians.[3] However, more recent studies have concluded that Almasaurus is either a temnospondyl more basal than the clade formed from the dichotomy between Capitosauria and Trematosauria[4] or that the genus is closely related to the trematosaurian family Metoposauridae, perhaps being a sister taxon of it.[5][6]
A temnospondyl genus described in 2000, Rileymillerus, is thought to be closely related to Almasaurus.[7]
Below is a cladogram showing the phylogenetic position of Almasaurus, from Schoch (2008):[6]
^Dutuit, J.-M. (1972). "Un nouveau genre de Stégocephale du Trias Supérieur Marocain: Almasaurus habbazi". Bulletin du Museum national d'histoire naturelle, Paris. 3: 73–77.
^Wilson, J. A. (1948). "A small amphibian from the Triassic of Howard County, Texas". Journal of Paleontology. 22: 359–361.
^ abWarren, A.; Black, T. (1985). "A new rhytidosteid (Amphibia, Labyrinthodontia) from the Early Triassic Arcadia Formation of Queensland, Australia, and the relationships of Triassic temnospondyls". Journal of Vertebrate Paleontology. 5 (4): 303–327. doi:10.1080/02724634.1985.10011868.
^Steyer, J. S. (2002). "The first articulated trematosaur 'amphibian' from the Lower Triassic of Madagascar: implications for the phylogeny of the group". Palaeontology. 45: 771–793. doi:10.1111/1475-4983.00260.
^Yates, A. M.; Warren, A. A. (2000). "The phylogeny of the 'higher' temnospondyls (Vertebrata: Choanata) and its implications for the monophyly and origins of the Stereospondyli". Zoological Journal of the Linnean Society. 128: 77–121. doi:10.1111/j.1096-3642.2000.tb00650.x.
^ abSchoch, R. R. (2008). "A new stereospondyl from the German Middle Triassic, and the origin of the Metoposauridae". Zoological Journal of the Linnean Society. 152: 79–113. doi:10.1111/j.1096-3642.2007.00363.x.
^Bolt, J. R.; Chatterjee, S. (2000). "A new temnospondyl amphibian from the Late Triassic of Texas". Journal of Paleontology. 74: 670–683. doi:10.1666/0022-3360(2000)074<0670:ANTAFT>2.0.CO;2.
almasaurus, extinct, genus, trematosaurian, temnospondyl, within, family, latiscopidae, known, from, several, skulls, some, postcranial, material, found, from, argana, formation, morocco, which, dates, back, late, triassic, temporal, range, late, triassic, pre. Almasaurus is an extinct genus of trematosaurian temnospondyl within the family Latiscopidae It is known from several skulls and some postcranial material found from the Argana Formation in Morocco which dates back to the Late Triassic AlmasaurusTemporal range Late Triassic PreꞒ Ꞓ O S D C P T J K Pg N Scientific classification Kingdom Animalia Phylum Chordata Class Amphibia Order Temnospondyli Suborder Stereospondyli Infraorder Trematosauria Superfamily Metoposauroidea Family Latiscopidae Genus AlmasaurusDutuit 1972 Species A habbazi Dutuit 1972 type When it was first named in 1972 Almasaurus was placed within its own superfamily the Almasauroidea 1 Although the related latiscopid Latiscopus disjunctus possesses exoccipitals that are underplated a feature that suggests that it is a member of the family Trematosauridae 2 Almasaurus is not considered to be a trematosaurid because it lacks such underplating 3 Almasaurus was considered to be a capitosaurian by Warren amp Black 1985 because it shared several characters with the group including a deeply notched squamosal and a lacrimal flexure while supposedly exhibiting none of the characters associated with trematosaurians 3 However more recent studies have concluded that Almasaurus is either a temnospondyl more basal than the clade formed from the dichotomy between Capitosauria and Trematosauria 4 or that the genus is closely related to the trematosaurian family Metoposauridae perhaps being a sister taxon of it 5 6 A temnospondyl genus described in 2000 Rileymillerus is thought to be closely related to Almasaurus 7 Below is a cladogram showing the phylogenetic position of Almasaurus from Schoch 2008 6 Capitosauroidea Trematosauria unnamed Aphaneramma Trematolestes unnamed Lyrocephaliscus Rileymillerus unnamed Almasaurus unnamed Metoposauridae CallistomordaxSee also editPrehistoric amphibian List of prehistoric amphibiansReferences edit Dutuit J M 1972 Un nouveau genre de Stegocephale du Trias Superieur Marocain Almasaurus habbazi Bulletin du Museum national d histoire naturelle Paris 3 73 77 Wilson J A 1948 A small amphibian from the Triassic of Howard County Texas Journal of Paleontology 22 359 361 a b Warren A Black T 1985 A new rhytidosteid Amphibia Labyrinthodontia from the Early Triassic Arcadia Formation of Queensland Australia and the relationships of Triassic temnospondyls Journal of Vertebrate Paleontology 5 4 303 327 doi 10 1080 02724634 1985 10011868 Steyer J S 2002 The first articulated trematosaur amphibian from the Lower Triassic of Madagascar implications for the phylogeny of the group Palaeontology 45 771 793 doi 10 1111 1475 4983 00260 Yates A M Warren A A 2000 The phylogeny of the higher temnospondyls Vertebrata Choanata and its implications for the monophyly and origins of the Stereospondyli Zoological Journal of the Linnean Society 128 77 121 doi 10 1111 j 1096 3642 2000 tb00650 x a b Schoch R R 2008 A new stereospondyl from the German Middle Triassic and the origin of the Metoposauridae Zoological Journal of the Linnean Society 152 79 113 doi 10 1111 j 1096 3642 2007 00363 x Bolt J R Chatterjee S 2000 A new temnospondyl amphibian from the Late Triassic of Texas Journal of Paleontology 74 670 683 doi 10 1666 0022 3360 2000 074 lt 0670 ANTAFT gt 2 0 CO 2 External links editAlmasaurus in the Paleobiology Database nbsp This Temnospondyli related article is a stub You can help Wikipedia by expanding it vte nbsp This article related to a Triassic animal is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Almasaurus amp oldid 1193402770, wikipedia, wiki, book, books, library,
