Matching dinosaur tracks from Early Cretaceous of Cameroon and Brazil show how continents split (free pdf)
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Ben Creisler
Aug 27, 2024, 1:48:12 AMAug 27
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Ben Creisler
A new paper:
Louis l. Jacobs, Lawrence J. Flynn, Christopher R. Scotese, Diana P. Vineyard, and Ismar de Souza Carvalho (2024)
The Early Cretaceous Borborema-Cameroon dinosaur dispersal corridor
In: Louis H.Taylor, Robert G. Raynolds, and Spencer G. Lucas, eds., 2024, Vertebrate Paleoichnology: A Tribute to Martin Lockley. New Mexico Museum of Natural History and Science Bulletin 95: 199-212
Early Cretaceous (>120 Ma) dinosaur tracks occur on both sides of the Atlantic Ocean in fluvio-lacustrine sediments preserved in half grabens developed on Neoproterozoic basement of the Borborema Shear Zone System in Brazil, continued as the West and Central African Rift Zones in Nigeria and Cameroon. On both continents, the tracks are impressed on top of thin sandstone strata interbedded with silt and mud. The dinosaur tracks found in pre-Aptian Brazil and Cameroon sediments were originally produced 1000 km apart on a single Gondwanan continent under similar paleoclimatic and sedimentological conditions in structurally similar basins formed by tectonic processes resulting in the formation of the South Atlantic Ocean. They now lie on opposite sides of that ocean some 6000 km apart.
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Free pdf:
Louis l. Jacobs, Lawrence J. Flynn, Christopher R. Scotese, Diana P. Vineyard, and Ismar de Souza Carvalho (2024)
The Early Cretaceous Borborema-Cameroon dinosaur dispersal corridor
In: Louis H.Taylor, Robert G. Raynolds, and Spencer G. Lucas, eds., 2024, Vertebrate Paleoichnology: A Tribute to Martin Lockley. New Mexico Museum of Natural History and Science Bulletin 95: 199-212
Early Cretaceous (>120 Ma) dinosaur tracks occur on both sides of the Atlantic Ocean in fluvio-lacustrine sediments preserved in half grabens developed on Neoproterozoic basement of the Borborema Shear Zone System in Brazil, continued as the West and Central African Rift Zones in Nigeria and Cameroon. On both continents, the tracks are impressed on top of thin sandstone strata interbedded with silt and mud. The dinosaur tracks found in pre-Aptian Brazil and Cameroon sediments were originally produced 1000 km apart on a single Gondwanan continent under similar paleoclimatic and sedimentological conditions in structurally similar basins formed by tectonic processes resulting in the formation of the South Atlantic Ocean. They now lie on opposite sides of that ocean some 6000 km apart.
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News:
Matching dinosaur footprints found on opposite sides of the Atlantic Ocean
An international team of researchers led by SMU paleontologist Louis L. Jacobs has found matching sets of Early Cretaceous dinosaur footprints on what are now two different continents.
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