By Philip J. Currie, Kevin Padian
This publication is the main authoritative encyclopedia ever ready on dinosaurs and dinosaur technology. as well as entries on particular animals comparable to Tyrannosaurus, Triceratops, and Velociraptor, the Encyclopedia of Dinosaurs covers replica, habit, body structure, and extinction. The ebook is generously illustrated with many designated drawings and images, and contains colour photographs and illustrations that function interpretations of the easiest identified and most vital animals. All alphabetical entries are cross-referenced internally, in addition to on the finish of every access. The Encyclopedia contains up to date references that motivate the reader to enquire own interests.
Key Features:
- the main authoritative encyclopedia ever ready on dinosaurs
- contains many certain drawings, images and illustrations in either colour and black-and-white
- includes comprehensively cross-referenced alphabetical entries with inner references, in addition to references on the end of every entry
- presents in-depth references, permitting readers to pursue self sufficient interests
- comprises 16 plates and 35 colour illustrations
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Extra resources for Encyclopedia of Dinosaurs
Sample text
They are, however, thinner and have relatively fewer bone fibers by volume (Fig. 1). Studies on extant vertebrates indicate that the vascularized zones form during moderate to rapid skeletogenesis, and that abrupt metabolic disruptions of bone formation trigger growth line deposition. , 1990). 5 Both types of growth lines may be deposited in synchrony with endogenous biorhythms. For example, captive crocodilians exposed to constant temperature, diet, and photoperiod still exhibit the periodic and cyclical skeletal growth banding of their wild counterparts.
Jr. (1994). The phylogenetic position of the Tyrannosauridae: Implications for theropod systematics. J. Paleontol. 68, 1100–1117. Holtz, T. , Jr. (1995). A new phylogeny of the Theropoda. J. Vertebr. Paleontol. 15(Suppl. to No. 3), 35A. Holtz, T. , Jr. (1996). Phylogenetic analysis of the nonavian tetanurine dinosaurs (Saurischia: Theropoda). J. Vertebr. Paleontol. 16(Suppl. to No. 3), 42A. Leidy, J. (1870). ] Proc. Acad. Nat. Sci. Philadelphia 1870, 3–5. Madsen, J. H. (1976). Allosaurus fragilis: A revised osteology.
And Osmo´lska, H. (1990). The Dinosauria, pp. 733. Univ. of California Press, Berkeley. Age Determination of Dinosaurs GREGORY M. ERICKSON University of California Berkeley, California, USA Early attempts to estimate the longevity of dinosaurs used allometric scaling principles. Ages were determined by dividing individual mass estimates by rates of growth for extant taxa. For very large species, growth rates were extrapolated to dinosaur proportions using regression analysis. The results of these investigations have been extremely variable because they depend on mass estimates and growth rates that are highly disparate.