Exceptional preservation of soft tissues in Cretaceous fishes from the Tlayúa Quarry, Central Mexico
Por:
Alvarado-Ortega J., Espinosa-Arrubarrena L., Blanco A., Vega F.J., Benammi M., Briggs D.E.G.
Publicada:
1 ene 2007
Resumen:
The Tlayúa Quarry, sometimes referred to as the Mexican Solnhofen, is one of the most important fossil localities in Mexico, with fishes making up 70%-80% of the macrofossils. White cryptocrystatline hydroxyapatite patches within many specimens reveal details of mutscles, gills, digestive tract, and stomach contents under the scanning electronic microscope. This is the first record of soft-tissue preservation of this kind in Mesozoic fishes from North America. The association of terrestrial, freshwater, and marine organisms, including shallow marine foraminifera, together with abundant ooids and isotopic evidence of fresh water higher in the sequence, favor a shallow, restricted-marine paleoenvironment. Copyright © 2007, SEPM (Society for Sedimentary Geology).
Filiaciones:
Alvarado-Ortega J.:
Instituto de Biología, Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier 524, Rio de Janeiro 20559-900 RJ, Brazil
Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad Universitaria 04510 Mexico, Mexico
Espinosa-Arrubarrena L.:
Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad Universitaria 04510 Mexico, Mexico
Blanco A.:
Centro de Investigaciones en Ciencias de la Tierra, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo Km 4.5, Pachuca, Hidalgo, Mexico
Vega F.J.:
Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad Universitaria 04510 Mexico, Mexico
Benammi M.:
Instituto de Geofísica, Universidad Nacional Autónoma de México, Ciudad Universitaria 04510 Mexico, Mexico
Briggs D.E.G.:
Department of Geology and Geophysics, Yale University, P.O. Box 208109, New Haven, CT 06520-8109, United States
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