Ankylosaurus magniventris

Impressio calvariae Ankylosauri (AMNH 5214) a fronte visa in Museum of the Rockies

Animalia — Chordata

Ordo : †Ornithischia
Familia : †Ankylosauridae
Tribus : †Ankylosaurini
Genus : Ankylosaurus
Brown, 1908
Species : Ankylosaurus magniventris
L Brown, 1908

Palaeontologia

Cretaceo exeunte, 68–66 m.a.:

↓

Sceletus anno 1908 compositus (AMNH 5895), partibus carentibus ex Stegosauro hypothetice refectis.

Ankylosaurus magniventris est species dinosauriorum armatorum. Eius fossilia in formationibus geologicis ex Cretaceo exeunte, abhinc annorum a 68 ad 66 milliones fere inventa sunt, in America Septentrionali occidentali, ut inter ultima ex dinosauriis non avianis sit. Binomen a Barnum Brown anno 1908 erectum est, sola species generis Ankylosauri. Nomen generis 'lacertam fusam', speciei 'ventrem magnum' significat. Aliquot specimina excavata sunt, sed sceletus plenus non dum inventus est. Quamquam aliae ankylosauridae a plenioribus fossilibus repraesentantur, haec species archetypus omnis gregis saepe habetur, contra nonnullas proprietates inusitatas.

Ankylosaurus magniventris, fortasse maxima ex ankylosauridis, a 6 ad 8 metra longus, et a 4.8 ad 8 tonnas metricas ponderis fuisse aestimatur. Quadrupedalis erat, corpore lato et robusto, cui erat calvaria humilis et lata, binis cornibus retro a tergo capitis, binisque cornibus infra retro et deorsum monstrantibus. Eius nares, aliorum ankylosauriorum dissimiles, in obliquum, non prorsum, monstrabant. Anterior maxillarum pars rostro tegebatur, cum seriebus parvorum dentium foliformium. Osteodermis, laminis armatis, tegebatur, demi-anulis osseis collum tegentibus. Cauda finem in magna clava capiebat. Ossa in calvaria aliisque corporis partibus coalescebant, vires augentia, et haec proprietas est origo nominis generici.

Ankylosaurus est genus familiae Ankylosauridarum, et eius cognata proxima Anodontosaurus et Euoplocephalus videntur.

Classificatio[recensere | fontem recensere]

	Tarchia

	Zaraapelta

Ankylosaurini

Dyoplosaurus

	Talarurus

	Nodocephalosaurus

	Ankylosaurus

	Anodontosaurus

Euoplocephalus

	Scolosaurus

	Ziapelta

Nexus interni

Bibliographia[recensere | fontem recensere]

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Brown, B. 1908. "The Ankylosauridae, a new family of armored dinosaurs from the Upper Cretaceous." Bulletin of the American Museum of Natural History 24: 187–201. Hdl 2246/1435.
Carpenter, K. 2001. "Chapter 21: Phylogenetic Analysis of the Ankylosauria." In The Armored Dinosaurs, ed. K. Carpenter, 454–83. ISBN 978-0-253-33964-5. Pagina 455.
Carpenter, K. 2004. "Redescription of Ankylosaurus magniventris Brown 1908 (Ankylosauridae) from the Upper Cretaceous of the Western Interior of North America." Canadian Journal of Earth Sciences 41 (8): 961–86. doi:10.1139/e04-043. Bibcode 2004CaJES..41..961C.
Coombs, W. 1978. "The families of the ornithischian dinosaur order Ankylosauria." Journal of Paleontology 21 (1): 143–70. PDF. Archivum interretiale.
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Vickaryous, M. K., T. Maryanska,, et D. B. Weishampel. 2004. "Ankylosauria." In The Dinosauria, ed. D. B. Weishampel, P. Dodson, et H. Osmólska, 363–92. Berkeleiae: University of California Press. ISBN 978-0-520-24209-8.
Weishampel, D. B., P. M. Barrett, R. A. Coria, L. Le Loeuff, X. Xu, X. Zhao X., A Sahni, E. M. P. Gomani, et C. R. Noto. 2004. "Dinosaur Distribution." In The Dinosauria, ed. secunda, ed. D. B. Weishampel, P. Dodson, et H. Osmolska, 517–606. Berkeleiae: University of California Press. ISBN 978-0-520-24209-8.
Williston, S. W. 1908. "Review: The Ankylosauridae." The American Naturalist 42 (501): 629–30. doi:10.1086/278987. JSTOR 2455817. Editio interretialis.