Dinosaurs and Other Reptiles from the Mesozoic of Mexico (Life of the Past)
Format: PDF / Kindle (mobi) / ePub
This overview of dinosaur discoveries in Mexico synthesizes current information about the geography and environment of the region during the Mesozoic when it was the western margin of the ancient continent of Pangea. The book summarizes research on various groups, including turtles, lepidosauromorphs, plesiosaurs, crocodyliforms, pterosaurs, and last but not least, dinosaurs. In addition, chapters focus on trackways and other trace fossils and on K/P boundary (the Chicxulub crater, beneath the Gulf of Mexico, has been hypothesized as the site of the boloid impact that killed off the dinosaurs). Dinosaurs and Other Reptiles from the Mesozoic of Mexico is an up-to-date, informative volume on an area that has not been comprehensively described until now.
fossils (petrifactions, as they were called) were organic in origin, which was contrary to the then-accepted explanation of them as “games of Nature.” He also dissents about what he calls “Spanish Gigantology,” which documented the existence of a race of giants in both the Old and New Worlds (Torrubia, 1754). These bones were recognized as belonging to fossil elephants as early as 1795. The remains of extinct proboscidians were commonly found during the excavations for buildings and wells.
of Héctor Rivera-Sylva in the collections of the Colección Nacional de Paleontología, Instituto de Geología of the National Autonomous University of Mexico. The specimen was restudied by Marie-Céline Buchy (2008), who showed that it was of a thalattosuchian crocodile instead of a plesiosaur. The first discovery of dinosaur skeletal remains in Coahuila was made by Erich Haarmann (Fig. 1.1), a German geologist traveling in northern Mexico in the early twentieth century. While making a geological
Ceratopsidae Marsh, 1890 Ceratopsia is a monophyletic taxon that consists of Centrosaurus and Triceratops and their most recent common ancestor and all of its descendants (Dodson et al., 2004). The most important derived features shared by ceratopsians is a skull that is narrow at the beak and flares posteriorly; a sharply keeled rostral bone and predentary; reduction or loss of premaxillary teeth; a strongly vaulted palate behind the beak, pointed; a deep cheek region; loss of the external
another locality in the Township of Ocampo, Coahuila, a fragmentary nodosaurid (CPC 272) has been found in the Pen Formation (Campanian). This specimen consists of one dorsal vertebra, one caudal vertebra, the distal end of the humerus, the ulna, the distal end of femur, one rib fragment, and one spike (Fig. 10.10). The left ulna lacks the distal third. The olecranon is most similar to that of the Stegopelta from the Cenomanian of Wyoming (Carpenter and Kirkland, 1998) in that it is a prominent,
and H. Osmólska (eds.), The Dinosauria. University of California Press, Berkeley, California. Janensch, W. 1926. Dinosaurier-Reste aus Mexiko. Centralblatt für Mineralogie, Geologie und Paläontologie B:192–197. Jasinski, S. E., and R. M. Sullivan. 2011. Re-evaluation of pachycephalosaurids from the Fruitland-Kirtland transition (Kirtlandian, late Campanian), San Juan Basin, New Mexico, with a description of a new species of Stegoceras and a reassessment of Texascephale langstoni. New Mexico