Download E-books Dinosaurs and Other Reptiles from the Mesozoic of Mexico (Life of the Past) PDF

By Kenneth Carpenter

This review of dinosaur discoveries in Mexico synthesizes present information regarding the geography and setting of the sector through the Mesozoic while it was once the western margin of the traditional continent of Pangea. The booklet summarizes study on a variety of teams, together with turtles, lepidosauromorphs, plesiosaurs, crocodyliforms, pterosaurs, and final yet now not least, dinosaurs. furthermore, chapters concentrate on trackways and different hint fossils and on K/P boundary (the Chicxulub crater, underneath the Gulf of Mexico, has been hypothesized because the web site of the boloid impression that killed off the dinosaurs). Dinosaurs and different Reptiles from the Mesozoic of Mexico is an updated, informative quantity on a space that has no longer been comprehensively defined until eventually now.

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Uitstlani Prieto-Marquez and Serrano-Brañas, 2012 The holotype IGM 6583 used to be gathered from a website positioned at the communal land of Presa San Antonio, close to Parras de l. a. Fuente, Coahuila. the positioning happens within the top Campanian Cerro del Pueblo Formation. for a very long time, it used to be recognized through its nickname, “Isauria,” and was once the 1st fixed hadrosaur in Mexico (Fig. 10. 3). The specimen encompasses a partial correct nasal; 10 dorsal and 14 caudal vertebrae; correct coracoid; left scapula; either humeri and ulnae; metacarpals; the preacetabular technique of the ideal ilium; the iliac peduncle of the best ischium; either femora, tibiae, and fibulae; left astragalus; correct and left metatarsals; and phalanges of the fitting pes. Prieto-Marquez and Serrano-Brañas (2012) famous that the specimen was once just like Gryposaurus in owning a deep and arcuate dorsal technique of the nasal yet differed in having a broader narial foramen and an anterodorsally curved deltoid crest of the scapula. It continues to be visible, despite the fact that, if those are variable characters, within which case the taxon could be referable to a different kritosaur. Regardless, Latirhinus uitstlani represents one of many southernmost saurolophines of North the US. See Plate 6. Lambeosaurinae Parks, 1923 Magnapaulia laticaudus (Morris, 1981) Prieto-Marquez et al. , 2012 Hadrosaurid bones referable to Magnapaulia laticaudus, in addition to attainable eggshell fragments, were present in the “El Disecado” member of the El Gallo Formation, north of Arroyo del Rosario, El Rosario, Baja Ornithischian Dinosaurs of Mexico 163 California. one of the extra very important bones are a partial cranium (LACM 17715) composed of a left premaxilla, maxilla, and jugal, in addition to postcranial bones together with a correct scapula, coracoid, humerus, 8 cervical vertebrae, 5 sacral vertebrae, 3 dorsal vertebrae fragments, a number of caudal centra spinous procedures, a part of the lengthy caudal haemal arches, a number of ribs, either femora, the left ischium, correct tibia, and correct metatarsal  III. different specimens comprise vertebrae, pelvic bones, limb bones, and molds of scalation. This fabric used to be accrued from 1966 to 1974 through the normal heritage Museum of la County. It used to be initially mentioned Hypacrosaurus sp. by means of Morris (1967), most likely as a result of its tall neural spines at the caudal vertebrae. It used to be later noted Lambeosaurus sp. (Morris, 1973) due to its Campanian age, after which to a brand new species ? Lambeosaurus laticaudus, even supposing the customary project was once doubtful (Morris, 1981). Gates et al. (2007), although, famous that lengthy, open exterior nares utilized by Morris (1981) as an autapomorphy of Lambeosaurus also are found in Corythosaurus and Hypacrosaurus. moreover, the denticulate oral margin of the premaxilla additionally resembles that of Hypacrosaurus, and the deep tail is found in Hypacrosaurus altispinus. Evans and Reisz (2007) acknowledged that ? Lambeosaurus laticaudus could finally be confirmed to be congeneric with Hypacrosaurus, yet Gates et al. (2007) thought of the taxon to be a nomen dubium simply because they didn't imagine the kind specimen had any synapomorphies to unite it to any lambeosaurine genus nor any autapomorphies that might let them erect a brand new genus.

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