Tematica Animali preistorici

Anchisaurus polyzelus Hitchcock, 1865

Phylum: Chordata Haeckel, 1874

Subphylum: Vertebrata Cuvier, 1812

Classe: Dinosauria Owen, 1841

Ordine: Saurischia Seeley, 1887

Famiglia: Anchisauridae Marsh, 1885

Genere: Anchisaurus Marsh, 1885

Descrizione

Questo animale, lungo circa due metri, era un rappresentante primitivo del gruppo dei sauropodomorfi, che comprendono i successivi giganti dal collo lungo come Brontosaurus (= Apatosaurus) e Diplodocus. A differenza dei contemporanei (e generalmente più grandi) prosauropodi, l'anchisauro è attribuito alla linea evolutiva dei sauropodi. Dotato di un collo lungo e di un corpo allungato contenente un apparato digerente decisamente efficace, l'anchisauro si cibava di vegetali che strappava con i denti a forma di piolo. La forma delle zampe suggerisce che potesse avere sia andatura bipede che quadrupede. Anchisaurus (dal greco agkhi

Diffusione

Vissuto all'inizio del Giurassico (circa 200 milioni di anni fa) in Nordamerica.

Bibliografia

–Gaines, Richard M. (2001). Coelophysis. ABDO Publishing Company. p. 14. ISBN 1-57765-488-9.
–Olsen, P.E. (2002). STRATIGRAPHY AND AGE OF THE EARLY JURASSIC PORTLAND FORMATION OF CONNECTICUT AND MASSACHUSETTS: A CONTRIBUTION TO THE TIME SCALE OF THE EARLY JURASSIC. Session No. 26 Studies of Depositional Systems and Sedimentary Rocks: In Honor of Edward Scudder Belt. 37th Annual Meeting (March 25-27, 2002).
–"Anchisaurus." In: Dodson, Peter & Britt, Brooks & Carpenter, Kenneth & Forster, Catherine A. & Gillette, David D. & Norell, Mark A. & Olshevsky, George & Parrish, J. Michael & Weishampel, David B. The Age of Dinosaurs. Publications International, LTD. p. 27. ISBN 0-7853-0443-6.
–Paul, G.S., 2010, The Princeton Field Guide to Dinosaurs, Princeton University Press p. 163.
–Robert E. Weems (2019): Evidence for Bipedal Prosauropods as the Likely Eubrontes Track-Makers, Ichnos.
–Yates, A. 2010. A revision of the problematic sauropodomorph dinosaurs from Manchester, Connecticut and the status of Anchisaurus Marsh. Palaeontology 53(4):739-752.
–Weems, R. 1992. A re-evaluation of the taxonomy of Newark Supergroup Saurischian dinosaur tracks, using extensive statistical data from a recently exposed track site near Culpeper, Virginia. In Sweet, P.(ed.), 26th forum on the geology of industrial minerals. Virginia Division of Mineral Resources Publication 119: 113-128.
–Smith, Nathan (1820). "Fossil bones found in red sandstones". American Journal of Science. 2: 146-147.
–Galton, Peter (1976). "Prosauropod dinosaurs (Reptilia: Saurischia) of North America". Postilla. 169: 1-98.
–Yates, Adam (2004). "Anchisaurus polyzelus (Hitchcock): The smallest known sauropod dinosaur and the evolution of gigantism among sauropodomorph dinosaurs". Postilla. 230: 1-57.
–Hitchcock, Edward (1858). Ichnology of New England. Boston: William White.
–Hitchcock, Edward (1841). Final Report on the Geology of Massachusetts. Volume 2. Containing III Scientific Geology. IV Elementary Geology. Amherst and Northampton: J.S. & C. Adams, J.H. Butler.
–E. Hitchcock. 1865. Appendix [A]. Bones of Megadactylus polyzelus. Supplement to the Ichnology of New England. A Report to the Government of Massachusetts in 1863. Wright and Potter, Boston 39-40.
–Marsh, O.C. 1882. "Classification of the Dinosauria". American Journal of Science, Series 3, 23: 81-86.
–O.C. Marsh. 1885. "Names of extinct reptiles". American Journal of Science 29: 169.
–Marsh, O.C. (1889). "Notice of New American dinosauria". American Journal of Science. 37 (220): 331-336.
–O.C. Marsh. 1891. "Notice of new vertebrate fossils". The American Journal of Science, series 3 42: 265-269.
–Marsh, O.C. (1893). "Restoration of Anchisaurus". American Journal of Science. 45 (266): 169-170.
–Yates, Adam M. (2010). "A revision of the problematic sauropodomorph dinosaurs from Manchester, Connecticut and the status of Anchisaurus Marsh". Palaeontology. 53 (4): 739-752.
–ICZN, 2015, "Opinion 2361 (Case 3561): Anchisaurus Marsh, 1885 (Dinosauria, Sauropodomorpha): usage conserved by designation of a neotype for its type species Megadactylus polyzelus Hitchcock, 1865", Bulletin of Zoological Nomenclature 72(2): 176-177.

	Data: 01/06/1992 Emissione: Dinosauri Stato: Ghana

	Data: 27/10/1993 Emissione: Dinosauri Stato: Guinea

	Data: 10/03/1993 Emissione: Animali preistorici Stato: Guyana

	Data: 22/06/1999 Emissione: Animali preistorici Stato: Maldives

	Data: 28/03/1994 Emissione: Dinosauri Stato: Mali

	Data: 22/02/1999 Emissione: Dinosauri Stato: Nevis

	Data: 20/04/1994 Emissione: Animali preistorici Stato: St. Vincent and the Grenadines Nota: Emesso in un foglietto di 8 v. diversi

	Data: 05/11/1992 Emissione: Dinosauri Stato: Tanzania