Travel Books:

Avian Ancestors

A Review of the Phylogenetic Relationships of the Theropods Unenlagiidae, Microraptoria, Anchiornis and Scansoriopterygidae
Click to share your rating 0 ratings (0.0/5.0 average) Thanks for your vote!
$148.00
Available from supplier

The item is brand new and in-stock with one of our preferred suppliers. The item will ship from a Mighty Ape warehouse within the timeframe shown.

Usually ships in 3-4 weeks
Free Delivery with Primate
Join Now

Free 14 day free trial, cancel anytime.

Buy Now, Pay Later with:

4 payments of $37.00 with Afterpay Learn more

6 weekly interest-free payments of $24.67 with Laybuy Learn more

Availability

Delivering to:

Estimated arrival:

  • Around 23 Jul - 2 Aug using International Courier

Description

Although consensus exists among researchers that birds evolved from coelurosaurian theropods, paleontologists still debate the identification of the group of coelurosaurians that most closely approaches the common ancestor of birds. The last 20 years witnessed the discovery of a wide array of avian-like theropods that has considerably amplified the anatomical disparity among deinonychosaurians, some of which resemble Archaeopteryx more than Deinonychus. Among these newly discovered theropods that show remarkable bird-like characteristics are the four-winged theropods Microraptor and Anchiornis, and the unenlagiids Unenlagia, Buitreraptor, and Rahonavis. A bizarre group of minute-sized coelurosaurs, the Scansoriopterygidae, also exhibits some avian similarities that lead some authors to interpret them as more closely related to birds than other dinosaurs. With the aim to explore the phylogenetic relationships of these coelurosaurians and birds, we merged recently published integrative databases, resulting in significant changes in the topological distribution of taxa within Paraves. We present evidence that Dromaeosauridae, Microraptoria, Unenlagiidae, and Anchiornis + Xiaotingia form successive sister taxa of Aves, and that the Scansoriopterygidae are basal coelurosaurians not closely related to birds. The implications in the evolutionary sequence of anatomical characters leading to birds, including the origin of flight, are also considered in light of this new phylogenetic hypothesis.

Author Biography:

Fernando Emilio Novas is an Argentine paleontologist working for the Comparative Anatomy Department of the Bernardino Rivadavia Natural History Argentine Museum in Buenos Aires. Novas holds a PhD in Natural sciences. Working for the CONICET, he described or co-described many dinosaurs, among them Abelisaurus, Aniksosaurus, Aragosaurus, Austroraptor, Megaraptor, Neuquenraptor, Orkoraptor, Patagonykus, Unenlagia, Araucanoraptor, Skorpiovenator, Tyrannotitan, Talenkauen, and Puertasaurus, most from the Patagonia region of Argentina.
Release date NZ
March 15th, 2013
Audience
  • Professional & Vocational
Illustrations
6 Illustrations, color; 12 Illustrations, black and white; IX, 96 p. 18 illus., 6 illus. in color.
Pages
96
Dimensions
155x235x15
ISBN-13
9789400756366
Product ID
20851551

Customer reviews

Nobody has reviewed this product yet. You could be the first!

Write a Review

Marketplace listings

There are no Marketplace listings available for this product currently.
Already own it? Create a free listing and pay just 9% commission when it sells!

Sell Yours Here

Help & options

Filed under...