author={Cyril A. Walker and Gareth J. Dyke},
  journal={Irish Journal of Earth Sciences},
  • C. A. WalkerG. Dyke
  • Published 2009
  • Biology, Environmental Science
  • Irish Journal of Earth Sciences
A taxonomic illustrated review of the Late Cretaceous fossil birds known from the Argentine locality of El Brete (Salta Province, Patagonia, Argentina) is presented here for the first time. Although some of these specimens were first reported in the early 1980s, and then a handful more were presented in literature thoughout the 1990s, this important collection of fossil birds has largely remained undescribed since it was gathered 30 years ago. This is in spite of the fact that the El Brete… 

A New Enantiornithine Bird from the Upper Cretaceous La Colonia Formation of Patagonia, Argentina

The presence of a dorsal supracondylar tubercle, like that in the new specimen and other avialans, is shown not to be an indicator of wading ecology as had been previously proposed and expands the understanding of South American diversity in Avialae and morphological diversity in Enantiornithes.

A Mesozoic bird from Gondwana preserving feathers

The fossil record of birds in the Mesozoic of Gondwana is mostly based on isolated and often poorly preserved specimens, none of which has preserved details on feather anatomy. We provide the

A historical specimen of enantiornithine bird from the Early Cretaceous of Mongolia representing a new taxon with a specialized neck morphology

Morphology of the palate shows that the evolution of specialized rostral morphology in Early Cretaceous enantiornithines was possible with retention of the primitive palatal structure, in contrast to modern birds (Neornithes), where the diversification of skull types was coupled with the evolutionof several types of palate.

The most complete enantiornithine from North America and a phylogenetic analysis of the Avisauridae

The first cladistic analysis to include all purported avisuarid enantiornithines is conducted, demonstrating Avisaurus to be paraphyletic and recovering an Avisauridae consisting of a dichotomy between North and South American taxa.

First Record of a Giant Bird (Ornithuromorpha) from the Uppermost Maastrichtian of the Southern Pyrenees, Northeast Spain

This finding demonstrates that large-sized birds were part of the ecological communities of the Ibero-Armorican island from the late Campanian to the Late Maastrichtian, being present during the last hundreds of thousands of years prior to the K/Pg extinction event.

A Euenantiornithine Bird from the Late Cretaceous Haeg Basin of Romania

The new specimens referred here to an indeterminate taxon of euenantiornithine further demonstrate that the larger members of this diverse Cretaceous lineage were globally distributed, as many birds are today.

New remains of the giant bird Gargantuavis philoinos from the Late Cretaceous of Provence ( south-eastern France )

1 Abstract: Two incomplete pelves of the giant bird Gargantuavis philoinos are described from Late Cretaceous deposits at Fox-Amphoux (Var, south-eastern France). They consist of synsacra with

A new genus and species of enantiornithine bird from the Early Cretaceous of Brazil

The fossil record of birds in Gondwana is almost restricted to the Late Cretaceous. Herein we describe a new fossil from the Araripe Basin, Cratoavis cearensis nov. gen et sp., composed of an

A new small enantiornithine bird from the Jehol Biota, with implications for early evolution of avian skull morphology

The results indicate that the quadratojugal is an inverted L-shaped element, morphologically similar to that of more basal birds Archaeopteryx bavarica, Jeholornis prima, Confuciusornis sanctus and Sapeornis chaoyangensis, contributing to the refinement of the cranial kinesis in early birds.

The phylogenetic affinities of the bizarre Late Cretaceous Romanian theropod Balaur bondoc (Dinosauria, Maniraptora): dromaeosaurid or flightless bird?

The reinterpretation of Balaur implies that a superficially dromaeosaurid-like taxon represents the enlarged, terrestrialised descendant of smaller and probably volant ancestors, and its phylogenetic placement within Avialae is not biased by character weighting.



A review of Late Cretaceous fossil birds from Hungary

We review the previously described Late Cretaceous (Santonian) bird remains from the Csehbánya Formation in the Bakony Mountains of Hungary, augmenting initial work by Ősi ( 2008 ), and add a number

Large euenantiornithine birds from the Cretaceous of southern France, North America and Argentina

Abstract We review historical approaches to the systematics of Enantiornithes, the dominant birds of the second half of the Mesozoic, and describe the forelimb remains of a new Cretaceous

Enantiornithine bird remains from the Late Cretaceous of Hungary

The recently documented vertebrate fauna from the Santonian Csehbanya Formation of Iharkut, (Bakony Mts, Hungary) provides the first occurrence of the extinct avian group Enantiornithes Walker, 1981

A new Enantiornithine bird from the Late Cretaceous of the Gobi desert

The combination of phylogeny and functional interpretation suggests that this new fossil bird is a representative of a flightless lineage, providing the first evidence of a trend towards more limited flying capabilities among Enantiornithes, a group of Cretaceous birds otherwise believed to be represented by competent fliers.


A wealth of recent discoveries combined with new phylogenetic analyses have documented the divergence of a number of lineages by the beginning of the Cretaceous, providing insights into the evolutionary development of feathers and other important features of the avian flight system.

The quality of the fossil record of Mesozoic birds

A dataset comprising all known fossil taxa is presented, suggesting that the broad outlines of early avian evolution are consistently represented: no stage in the Mesozoic is characterized by an overabundance of scrappy fossils compared with more complete specimens.

New subclass of birds from the Cretaceous of South America

Current classification of birds recognizes three subclasses which are morphologically distinct: the Archaeornithes for Archaeopteryx, the Odontornithes for the Hesperornithiformes and the

Archosaurian reptiles with Gondwanan affinities in the Upper Cretaceous of Europe

The Late Cretaceous (mainly Campanian and Maastrichtian) non-marine vertebrate faunas of Europe contain archosaurian reptiles which belong to groups otherwise known mainly or only from the southern

Cretaceous birds of Latin America

Neuquenornis volans, a new Late Cretaceous bird (Enantiornithes: Avisauridae) from Patagonia, Argentina

The structure of the wing and pectoral girdle of Neuquenornis indicates that it was an active flyer, an aptitude also inferred for the El Brete enantiornithines from the Upper Cretaceous Lecho Formation of northwestern Argentina.