ENSIKLOPEDIA Cari Tekan Enter untuk memulai pencarian cepat. Kembali ke Ensiklopedia Arsip Wikipedia Indonesia Alligator mefferdi Alligator mefferdiExtinct species of alligator Alligator mefferdiTemporal range: Miocene, 13.8–10.3 Ma[1] PreꞒ Ꞓ O S D C P T J K Pg N Scientific classification Kingdom: Animalia Phylum: Chordata Class: Reptilia Clade: Archosauria Order: Crocodilia Family: Alligatoridae Subfamily: Alligatorinae Genus: Alligator Species: †A. mefferdi Binomial name †Alligator mefferdiC.C. Mook, 1946 Alligator mefferdi is an extinct species of alligator described by Charles Craig Mook. They lived in the Miocene period, and their range was principally in what is now Nebraska, United States.[2][3] The type specimen was discovered in the Ash Hollow Formation at Ash Hollow State Historical Park.[2] Classification A. mefferdi is a member of the subfamily Alligatorinae, within the larger family Alligatoridae. Phylogenetic studies have found A. mefferdi to be most closely related to the living American alligator,[4][1] as shown in the cladogram below:[5][6] Alligatoridae Caimaninae Alligatorinae Ceratosuchus burdoshi† Hassiacosuchus haupti† Navajosuchus mooki† Wannaganosuchus brachymanus† Arambourgia gaudryi† Allognathosuchus polyodon† Allognathosuchus wartheni† Procaimanoidea kayi† Alligator Alligator prenasalis† Alligator mcgrewi† Alligator olseni† Alligator sinensis Chinese alligator Alligator thomsoni† Alligator mefferdi† Alligator mississippiensis American alligator Measurements The average measurements for the skull of A. mefferdi are 298 x 170 millimeters. Based on the length, the estimated body mass was 34.6 kg.[2] References Paleontology portal 1 2 Rio, Jonathan P.; Mannion, Philip D. (6 September 2021). "Phylogenetic analysis of a new morphological dataset elucidates the evolutionary history of Crocodylia and resolves the long-standing gharial problem". PeerJ. 9 e12094. doi:10.7717/peerj.12094. PMC 8428266. PMID 34567843. 1 2 3 Fossilworks ↑ "Alligators may not have changed much in 8 million years". Mashable UK. Retrieved 2020-12-26. ↑ Michael S. Y. Lee; Adam M. Yates (27 June 2018). "Tip-dating and homoplasy: reconciling the shallow molecular divergences of modern gharials with their long fossil". Proceedings of the Royal Society B. 285 (1881). doi:10.1098/rspb.2018.1071. PMC 6030529. PMID 30051855. ↑ Hastings, A. K.; Bloch, J. I.; Jaramillo, C. A.; Rincon, A. F.; MacFadden, B. J. (2013). "Systematics and biogeography of crocodylians from the Miocene of Panama". Journal of Vertebrate Paleontology. 33 (2): 239. Bibcode:2013JVPal..33..239H. doi:10.1080/02724634.2012.713814. S2CID 83972694. ↑ Brochu, C. A. (2011). "Phylogenetic relationships of Necrosuchus ionensis Simpson, 1937 and the early history of caimanines". Zoological Journal of the Linnean Society. 163: S228–S256. doi:10.1111/j.1096-3642.2011.00716.x. vteExtinct crocodilians Kingdom: Animalia Phylum: Chordata Class: Sauropsida Clade: Pseudosuchia Clade: Eusuchia Pseudosuchia see Pseudosuchia Neosuchia see Neosuchia Crocodilia see below↓ Basal crocodiliansMekosuchinae Australosuchus? Baru Harpacochampsa? Kalthifrons Kambara Mekosuchus Paludirex Quinkana? Trilophosuchus Ultrastenos Volia Others Albertosuchus Arenysuchus? Asiatosuchus Borealosuchus? Brachyuranochampsa Charactosuchus "Crocodylus" acer "Crocodylus" affinis Portugalosuchus? Pristichampsus? Prodiplocynodon Planocraniidae? AlligatoroideaAlligatoroidea Deinosuchus? Diplocynodon? Leidyosuchus? Listrognathosuchus Globidonta Albertochampsa Arambourgia Brachychampsa Ceratosuchus Deinosuchus? Eocaiman Hassiacosuchus Leidyosuchus? Navajosuchus Procaimanoidea? Stangerochampsa Orientalosuchina Dongnanosuchus Eoalligator Eurycephalosuchus Jiangxisuchus Krabisuchus Orientalosuchus Protoalligator Alligatoridae Balanerodus? Lianghusuchus? Menatalligator? Sajkanosuchus? Alligatorinae Akanthosuchus? Allognathosuchus Arambourgia? Ceratosuchus? Chrysochampsa Hassiacosuchus? Navajosuchus? Procaimanoidea? Wannaganosuchus? Alligator A. hailensis A. luicus A. mcgrewi A. mefferdi A. munensis A. olseni A. prenasalis A. thomsoni Caimaninae Acresuchus Bottosaurus Brachychampsa? Centenariosuchus Ceratosuchus? Chinatichampsus Culebrasuchus Eocaiman? Globidentosuchus Gnatusuchus Kuttanacaiman Mourasuchus Necrosuchus Orthogenysuchus Paranacaiman Paranasuchus Protocaiman Purussaurus Stangerochampsa? Tsoabichi Wannaganosuchus? Melanosuchus M. fisheri M. latrubessei Caiman C. australis C. brevirostris C. gasparinae C. venezuelensis C. wannlangstoni LongirostresCrocodyloidea Albertosuchus? Antecrocodylus Astorgosuchus Australosuchus? "Crocodylus" affinis? "Crocodylus" megarhinus Jiangxisuchus? Mekosuchinae? Crocodylidae Aldabrachampsus Dzungarisuchus? Oxysdonsaurus? Osteolaeminae Brochuchus "Crocodylus" gariepensis Euthecodon Rimasuchus Kinyang? Crocodylinae "Crocodylus" megarhinus? Kinyang? Quinkana? Tzaganosuchus? Voay Crocodylus C. anthropophagus C. checchiai C. falconensis C. palaeindicus C. sudani C. thorbjarnarsoni Gavialoidea Dollosuchoides Dollosuchus Ferganosuchus Gavialosuchus Gunggamarandu Kentisuchus Leptorrhamphus? Maomingosuchus Maroccosuchus Megadontosuchus Ocepesuchus Paratomistoma Pseudogavialis Thecachampsa Tienosuchus? "Tomistoma" cairense "Tomistoma" lusitanicum Gavialidae Sacacosuchus Tomistominaesensu stricto Brasilosuchus? Gavialosuchus? Melitosaurus Paratomistoma? Thecachampsa? Tomistoma T. calaritanum? T. gaudense? T. lusitanicum? T. taiwanicum? Gavialinaesensu lato Aktiogavialis Dadagavialis Gavialosuchus? Gryposuchus Hanyusuchus Harpacochampsa? Hesperogavialis Ikanogavialis Maomingosuchus? Paratomistoma? Penghusuchus Piscogavialis Rhamphosuchus Siquisiquesuchus Sutekhsuchus "Tomistoma" cairense? "Tomistoma" coppensi Toyotamaphimeia Gavialis G. bengawanicus G. breviceps? G. browni? G. curvirostris? G. leptodus? G. lewisi? G. pachyrhynchus? G. papuensis? See also: Brevirostres Gryposuchinae Taxon identifiersAlligator mefferdi Wikidata: Q104830573 EoL: 47446623 GBIF: 4967708 Paleobiology Database: 96549 This article about a prehistoric archosaur is a stub. You can help Wikipedia by adding missing information.vte
