Monday, September 04, 2006
Dinosaur trackways in marine limestone
This report of dinosaur trackways in a marine limestone will be of interest to those developing catastrophist models of Earth history. The two reported track sites are located near the village of Coisia in the French Jura. Both exposures are subvertical bedding planes showing sauropod footprints impressed in a Jurassic (Tithonian) limestone referred to the 'Couches du Chailley' Formation. The Couches du Chailley are bioturbated by Thalassinoides burrows and have yielded ammonites, gastropods, bivalves, algae and foraminifers. Conventionally they represent a subtidal environment such as a lagoon separated from the open sea by a coral reef. The dinosaur footprints are referred to the ichnogenus Parabrontopodus, attributed to sauropods or diplodocoids.These animals evidently left the tracks on a surface temporarily exposed between marine incursions.
Le Loeuff J., Gourrat C., Landry P., Hautier L., Liard R., Souillat C., Buffetaut E., Enay R., ‘A Late Jurassic sauropod tracksite from Southern Jura (France)’, Comptes Rendus Palevol 2006;5(5):705-709.
Abstract. The discovery of sauropod trackways in the Late Jurassic (Tithonian) of the Jura department (eastern France) is reported. More than 170 footprints (pes and manus prints) comprise at least nine trackways. The footprints are referred to the ichnogenus Parabrontopodus, characterized by a narrow-gauge trackway. The locality of Coisia is the most important sauropod tracksite in France.
Le Loeuff J., Gourrat C., Landry P., Hautier L., Liard R., Souillat C., Buffetaut E., Enay R., ‘A Late Jurassic sauropod tracksite from Southern Jura (France)’, Comptes Rendus Palevol 2006;5(5):705-709.
Abstract. The discovery of sauropod trackways in the Late Jurassic (Tithonian) of the Jura department (eastern France) is reported. More than 170 footprints (pes and manus prints) comprise at least nine trackways. The footprints are referred to the ichnogenus Parabrontopodus, characterized by a narrow-gauge trackway. The locality of Coisia is the most important sauropod tracksite in France.
# posted by Nemagraptus @ 1:10 PM 
