Scientific Quarterly Journal of Geosciences

Scientific Quarterly Journal of Geosciences

New Early Jurassic Dinosaur Footprints from Shemshak Formation, Harzavil Village, Western Alborz, N Iran

Document Type : Original Research Paper

Author
Department of Geology, Faculty of Science, University of Zanjan, Zanjan, Iran
Abstract
Three tridactyl footprints were found on bedding planes of rippled fine grain sandstone layers of the Shemshak Formation, in Harzavil village, western Alborz, Gilan province, north Iran. Footprints are in the form of concave epirelief and convex hyporelief. Only the middle footprint is completely preserved (85 mm length and 72 mm width). The first and last footprints are approximately the same size (78 mm). Based on ichnological factors, it seems that footprints have been made by two or several bipedal dinosaurs that moved in the same direction.
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Abbassi, N. & Lockley, M.G., 2004-Eocene bird and mammal tracks from the Karaj Formation, Tarom Mountains, northwestern Iran. Ichnos, 11: 349-356.
Annells, R.N., Arthurton, R.S., Bazely, R.A. and Davies, R.G., 1975- Explanatory Text of the Qazvin and Rasht Quadrangles Map. Geol. Surv. Iran, Geological quadrangles Nos. E3-E4, [with 1:250000 geological map].
Assereto, R., 1966- The Jurassic Shemshak Formation in Central Alborz (Iran). Riv. Ital. Paleont. Strat., v. 72: 1133-1182.
Ataabadi, M.M. & Khazaee, A., 2004- New Eocene mammal and bird footprints from Birjand area, eastern Iran. Ichnos, 11: 363-370.
Ataabadi, M.M. & Sarjeant, W.A.S., 2000- Eocene mammal footprints from eastern Iran: a prelimminary study. C. R. Acad. Sci., Paris, 331: 543-547.
Ellenberger, P., 1974- Contribution à la classifiction des pistes de vertébrés du Trias: Les types du Stormberg d’Afrique du Sud (II). Palaeovertebrata, Mem. Extraord., 1-141.
Haubold, H., 1988- archosaur footprints at the terrestrial Triassic-Jurassic transition. In K. Padian (ed.) The Beginning of the Age of Dinosaurs Faunal Change Across the Triassic-Jurassic Boundary. Cambridge Univ. Press, 189-201.
Hitchcock, E.,1845- An attempt to name, classify and describe the animals that made the fossil footprints of New red Sandstone in Massachusetts. Ame. J. Sci. 29: 129-140.
Hitchcock, E., 1858- Ichnology of New England. A report on the sandstone of the Connecticut Valley, specially its footprints. Boston, William White. 220p.
ICZN (International Code of Zoological Nomenclature),1985- International Code of Zoological Nomenclature, 3rd ed., Intern. Trust Zoo. Nomen. Asso. British Museum (Natural History), London and University of California Press.
Irby, G.V., 1995- Posterolateral markings on dinosaur tracks, Cameron dinosaur tracksite, Lower Jurassic Moenave Formation, northeastern Arizona. J. Paleont. 69(4): 779-784.
Lambrecht, K., 1933- Urmiornis abeli n. sp. eine Pliozane, Vogelfahrte aus Persien. palaobiologie, Vol. 6, Face. 2, 242-245.
Lapparent, A.F.de & Davoudzadeh, M., 1972- Jurassic dinosaur footprints of the Kerman area central Iran. Geol. Surv. Iran, report No. 26: 5-22.
Lapparent, A.F.de & Nowgol Sadat, M.A.A.,1975- Une trace de pas de dinosaur dans le Lias de l’Elborz, en Iran. Consequences de cette decouverte. C. R. Acad. Sc., Paris, serie D, 280: 161-163.
Lockley, M.G., 1991- Tracking Dinosaurs, A New Look at an Ancient World. Cambridge Univ. Press. 238pp.
Lull, R.S., 1904- Fossil footprints on the Jura-Trias of North America. Memoirs of the Boston Society of Natural History, 5: 461-557.
Olsen, P.E. & Galton,P.M., 1984- A review of the reptile and amphibian assemblages from the Stormberg of Southern Africa, with special emphasis on the footprints and the age of the Stormberg. Paleontologia Africana, 25: 87-110.
Olsen, P.E., 1980- Fossil great lakes of the Newark Supergroup. In W. Manspeizer (ed.) Field Studies of New Jersey Geology and Guide to Field Trips, 52 Annual Meeting. Newark College of Arts and Sciences, Newark, New Jersey. P. 352-398.
Pickerill, R.K., 1994- Nomenclature and taxonomy of invertebrate trace fossils. In S. K. Donovan (ed.) The Palaeobiology of Trace Fossils. Johan Wieley & Sons, p. 3-42.
Rad, F.K., 1986- A Jurassic delta in the eastern Alborz, NE Iran. J. Petrolum Geol., 9 (3): 281-294.
Sarjeant, W.A.S. & Kennedy, W.J., 1973- Proposal of a code for the nomenclature of trace fossils. Canad. J. Earth Sci., 10: 460-475.
Sarjeant, W.A.S., 1979- Code for trace fossil nomenclature. Palaeogeo. Palaeoclim. Palaeoeco., 28: 147-167.
Seilacher, A., 1953- Studien zur Palichnologie. I. Űber die Methoden der Palichnologi. Neues Jahrb. Geologie, Palaontologie, Abhandl. 96: 421-452.
Stöcklin, J., Eftekhar-nezhad, J., 1969- Explanatory Text of the Zanjan Quadrangle Map. Geol. Surv. Iran, report No D4, 61pp. [with 1:250000 geological map].
Thulborn, T., 1990- Dinosaur Tracks. Chapman & Hall Publications, 410pp.
Vialov, O.S., 1966- Sledy Zhiznedeyatelnosti Organizmow i Ikh Paleontologicheskoe Znachenie. Academy of Sciences, Ukrain, Kiev, 219pp.
Vialov, O.S., 1989- Pliocene bird tracks from Iran assigned to the genus Urmiornis, Paleontological J., 3: 120-121.