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Late Jurassic dinosaur footprints from Chassiron–La Morelière (Oléron Island, western France)
- Source :
- Paleobiodiversity and Paleoenvironments, Paleobiodiversity and Paleoenvironments, Springer, 2017, 97 (4), pp.773-789. 〈10.1007/s12549-017-0282-3〉, Palaeobiodiversity and Palaeoenvironments, Palaeobiodiversity and Palaeoenvironments, 2017, 97 (4), pp.773-789. ⟨10.1007/s12549-017-0282-3⟩, Palaeobiodiversity and Palaeoenvironments, Springer Verlag, 2017, 97 (4), pp.773-789. ⟨10.1007/s12549-017-0282-3⟩
- Publication Year :
- 2017
- Publisher :
- HAL CCSD, 2017.
-
Abstract
- International audience; A new dinosaur tracksite was recently discovered in the Upper Jurassic deposits from the Oléron Island (Atlantic Ocean, western France). Tracks are located along the coastline in the tidal area of La Morelière near “Pointe de Chassiron”. They were observed in situ in an evaporitic interval from the “Purbeck beds” Unit. Sediments consist of calcite recrystallised after gypsum dissolution within limestone layers which are composed of thin laminites. The track-bearing surface shows abundant mud cracks and some ripple marks. Ichnofossils consist of medium-sized tridactyl footprints of theropods forming a narrow trackway. In order to obtain 3D reconstructions of the track-bearing surface, the trackway was scanned with a resolution of 0.5 mm using an Artec Eva 3D white-light scanner. As indicated by the track dimensions, the probable trackmaker is assigned to a medium-sized non-coelurosaur tetanuran, such as a megalosauroid or an allosauroid theropod. The palaeoenvironmental context is interpreted as a tidal flat in an evaporitic basin. In addition to the tridactyl tracks, we report sauropod- and thyreophoran-like tracks on two other surfaces from Chassiron–La Morelière.
- Subjects :
- 010506 paleontology
Dinosaur footprints
Late Jurassic
Context (language use)
Trace fossil
Structural basin
010502 geochemistry & geophysics
01 natural sciences
chemistry.chemical_compound
Paleontology
Oléron Island (France)
Ecology, Evolution, Behavior and Systematics
0105 earth and related environmental sciences
[ SDU.STU.PG ] Sciences of the Universe [physics]/Earth Sciences/Paleontology
Calcite
Ripple marks
Global and Planetary Change
Ecology
Theropods
Geology
Trackway
White-light scanner
Sauropods
chemistry
[SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology
Tidal flat
Subjects
Details
- Language :
- English
- ISSN :
- 18671594 and 18671608
- Database :
- OpenAIRE
- Journal :
- Paleobiodiversity and Paleoenvironments, Paleobiodiversity and Paleoenvironments, Springer, 2017, 97 (4), pp.773-789. 〈10.1007/s12549-017-0282-3〉, Palaeobiodiversity and Palaeoenvironments, Palaeobiodiversity and Palaeoenvironments, 2017, 97 (4), pp.773-789. ⟨10.1007/s12549-017-0282-3⟩, Palaeobiodiversity and Palaeoenvironments, Springer Verlag, 2017, 97 (4), pp.773-789. ⟨10.1007/s12549-017-0282-3⟩
- Accession number :
- edsair.doi.dedup.....9930c1d23ddfc16041fc98a062d90038