Montemarcello Formation

The Montemarcello Formation is a Late Triassic (Carnian) geologic formation in Liguria, Italy.[1] Fossil prosauropod tracks have been reported from the formation.[2]

Montemarcello Formation
Stratigraphic range: Carnian
~237–228 Ma
TypeGeological formation
Lithology
PrimarySandstone
OtherClaystone
Location
Coordinates44.1°N 9.9°E / 44.1; 9.9
Approximate paleocoordinates15.2°N 18.3°E / 15.2; 18.3
RegionLiguria
Country Italy
Type section
Named forMontemarcello
Montemarcello Formation (Italy)

Description

The formation comprises arenites with a few thin clayey inter-beds. The sands overlie micro-conglomeratic bodies up to 1 metre (3.3 ft) thick. Two-dimensional ripple marks (with wavelengths of nearly 20 centimetres (7.9 in)), larger ripples (wavelengths of 120 centimetres (47 in)), interference ripples, and mud cracks were recognized. The arenitic beds are also characterized by internal structures such as accretionary laminae, coalescent bodies, low-angle lamination, and cross stratification. Some arenitic levels are deeply bioturbated, both by simple vertical tubes and by larger horizontal ones. Rare small wood fragments were recognized. Small channels, up to 1.5 metres (4.9 ft) over a very short distance, cut the arenitic bodies.[3]

Fossil content

The following fossils were reported from the formation:[1]

See also

References
  1. Montemarcello Formation in the Paleobiology Database
  2. Weishampel et al., 2004, pp.517-607
  3. Lerici in the Paleobiology Database
  4. Nicosia & Loi, 2003
  5. Leonardi, 2000
  6. Lockley et al., 2006

Bibliography
  • Lockley, M. G.; S. G. Lucas, and A. P. Hunt. 2006. Eosauropus, a new name for a Late Triassic track: further observations on the Late Triassic ichnogenus Tetrasauropus and related forms, with notes on the limits of interpretation. In J. D. Harris, S. G. Lucas, J. A. Spielmann, M. G. Lockley, A. R. C. Milner, J. I. Kirkland (eds.), The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37. 192–198.
  • Weishampel, David B.; Peter Dodson, and Halszka Osmólska (eds.). 2004. The Dinosauria, 2nd edition, 1–880. Berkeley: University of California Press. Accessed 2019-02-21. ISBN 0-520-24209-2
  • Nicosia, U., and M. Loi. 2003. Triassic footprints from Lerici (La Spezia, northern Italy). Ichnos 10. 127–140.
  • Leonardi, G. 2000. I dinosauri d'Italia e delle aree adiacenti - The dinosaurs of Italy and adjacent areas in G. Leonardi & P. Mietto (ed.), Dinosauri in Italia, 275–295. Le Orme Giurassiche dei Lavini di Marco (Trentino) e Gli Altri Resti Fossili Italiani.
  • Dalla Vecchia, F.M. 1995. I dinosauri in Italia: stato delle conoscenze - Dinosaurs in Italy: state of knowledge. Natura Nascosta 11. 29–35.
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