Download e-book for kindle: Avian Evolution: The Fossil Record of Birds and its by Gerald Mayr

By Gerald Mayr

ISBN-10: 1119020727

ISBN-13: 9781119020721

Wisdom of the evolutionary heritage of birds has a lot superior in contemporary many years. Fossils from severe time classes are being defined at extraordinary premiums and smooth phylogenetic analyses have supplied a framework for the interrelationships of the extant teams. This publication supplies an outline of the avian fossil list and its paleobiological importance, and it's the in simple terms updated textbook that covers either Mesozoic and extra modern-type Cenozoic birds in a few element. The reader is brought to key gains of basal avians and the morphological variations that experience happened within the evolution in the direction of glossy birds. An account of the Cenozoic fossil list sheds gentle at the biogeographic historical past of the extant avian teams and discusses fossils within the context of present phylogenetic hypotheses. This evaluation of the evolutionary heritage of birds not just addresses scholars and confirmed researchers, however it can also be an invaluable resource of knowledge for a person else with an curiosity within the evolution of birds and a average historical past in biology and geology.

Show description

Read or Download Avian Evolution: The Fossil Record of Birds and its Paleobiological Significance PDF

Best paleontology books

The Ultimate Dinosaur: Past, Present, and Future by BYRON PREISS, Robert Silverberg PDF

A set of articles--including one by means of a number one paleontologist--speculating at the global of the dinosaurs contains contributions by way of Ray Bradbury, Robert Silverberg, Gregory Benford, Michael Bishop, etc.

Jeffrey D. Stilwell, Rodney M. Feldmann's Paleobiology and Paleoenvironments of Eocene Rocks: McMurdo PDF

Released by way of the yankee Geophysical Union as a part of the Antarctic learn sequence. Michael okay. Brett-Surman, George Washington college, saw that, "being a paleontologist is like being a coroner other than all of the witnesses are useless and the entire proof has been skipped over within the rain for sixty five million years.

When the Invasion of Land Failed : The Legacy of the - download pdf or read online

The invasion of land by means of ocean-dwelling vegetation and animals used to be the most innovative occasions within the evolution of lifestyles on the earth, but the animal invasion nearly failed -- two times -- end result of the dual mass extinctions of the past due Devonian Epoch. a few 359 to 375 million years in the past, those catastrophic occasions dealt our ancestors a blow that nearly drove them again into the ocean.

Download e-book for kindle: The Trace-Fossil Record of Major Evolutionary Events: Volume by M. Gabriela Mángano, Luis A. Buatois

This quantity addresses significant evolutionary alterations that happened through the Mesozoic and the Cenozoic. those contain discussions on significant evolutionary radiations and ecological thoughts on land and at sea, corresponding to the Mesozoic marine revolution, the Mesozoic radiation of vertebrates, the Mesozoic lacustrine revolution, the Cenozoic radiation of mammals, the evolution of paleosol biotas, and the evolution of hominins.

Additional resources for Avian Evolution: The Fossil Record of Birds and its Paleobiological Significance

Example text

Sexual selection or signaling may therefore have played a role in the evolution of some unusual integumentary structures of Mesozoic theropods, such as the elongated “ribbon-like” feathers of scansoriopterygids (Zhang et al. 2008a; Xu et al. 2009c). However, as yet no selective advantage has been identified that would lead to a pennaceous feather with its complex interlocking system of barbs and barbules just for display or signaling reasons. A coherent vane increases the feather surface available for signaling (Koschowitz et al.

Prum et al. 1998). These effects can involve melanosome layers, but because usually neither color pigments nor keratin are preserved in fossil feathers, color reconstructions based on the melanosomes alone may not always accurately reflect the original color spectrum. Surprisingly often, these analyses result in the assumption of black feathers, as in the cases of Archaeopteryx (Carney et al. 2012) and Microraptor (Li et al. 2012). At least among extant birds, a black plumage is, however, not very common and current color reconstructions may be all too simplistic (McNamara et al.

The trunk-climbing hypothesis was supported with the shape of the large forelimb claws, which are preserved with their horny sheaths in most specimens. The curvature of both the manual and pedal claws of Archaeopteryx does indeed correspond with that of the foot claws of extant arboreal birds and mammals (Feduccia 1993), but similar claw geometries are found in various non-arboreal birds (Wellnhofer 2009). The morphology of the hindlimb skeleton of Archaeopteryx does not indicate climbing habits (Wellnhofer 2009), and most likely it was neither a cursorial nor a strictly arboreal animal.

Download PDF sample

Avian Evolution: The Fossil Record of Birds and its Paleobiological Significance by Gerald Mayr


by David
4.3

Rated 4.01 of 5 – based on 26 votes