Body Mass Estimations and Paleobiological Inferences on a New Species of Large Caracara (Aves, Falconidae) from the Late Pleistocene of Uruguay

  title={Body Mass Estimations and Paleobiological Inferences on a New Species of Large Caracara (Aves, Falconidae) from the Late Pleistocene of Uruguay},
  author={Washington W. Jones and Andr{\'e}s Rinderknecht and Rafael Migotto and Rudemar Ernesto Blanco},
  booktitle={Journal of Paleontology},
Abstract The caracaras belong to a group of falconids with widespread geographical distribution in the Western Hemisphere, particularly in South America. Here we report fossil remains of a new species attributed to the genus Caracara from the late Pleistocene of Uruguay. This bird would have had an estimated body mass of 3700 grams, a value that greatly exceeds the maximum body mass reported for living falconids. Apparently, it would have had flying capabilities, in contrast to another… 

Two species of Uria (Aves: Alcidae) from the Pleistocene of Shiriya, northeast Japan, with description and body mass estimation of a new species

Examples indicate that independent evolutions and extinctions of large-bodied species took place in two different lineages of Alcidae and in two major oceans, Alca in the Atlantic and Uria in the Pacific, and demonstrate the importance of incorporating extinct taxa in analyses of evolutionary patterns and morphological diversities.

Mid-Holocene Falkland Islands bird bones from a peat deposit, including a new species of caracara

This paper provides a more detailed analysis of more recent focussed excavations of subfossil remains of the Falkland Islands, summarising their known history and dates them at over 5000 years before present.

A New Pleistocene bird assemblage from the Southern Pampas (Buenos Aires, Argentina)

A record of a landbird (Telluraves) from the Eocene Ikovo locality (East Ukraine)

First remains of a landbird from the Eocene (Lutetian) marine deposits of the Ikovo locality in Ukraine are described here. These include a single coracoid bone of an immature individual. The

Catalogue of Cuban fossil and subfossil birds

  • W. Suárez
  • Environmental Science, Geography
    Bulletin of the British Ornithologists’ Club
  • 2022
Summary. All information relating to the Cuban palaeo-avifauna since the first published list in 1928 to the present, is summarised and presented as a catalogue with commentary. I update data on the

The last terror birds (Aves, Phorusrhacidae): new evidence from the late Pleistocene of Uruguay

AbstractWe report new fossil evidence of terror bird survival until the end of the Pleistocene in Uruguay. The new specimens comprise the distal portion of right tarsometatarsus and a left humerus;

Skeletal Correlates for Body Mass Estimation in Modern and Fossil Flying Birds

This study generates thirteen body mass correlations and associated measures of statistical robustness using a sample of 863 extant flying birds and suggests that the most precise proxy for estimating body mass in the overall dataset is the maximum diameter of the coracoid’s humeral articulation facet (the glenoid).

A new fossil species of small crested caracara (Aves: Falconidae: Caracara) from the Pacific lowlands of western South America

Abstract A new species of small crested caracara, Caracara seymouri, from Quaternary asphalt deposits of the Talara Tar Seeps, northwestern Peru, is described from most major elements of the




Studying plumage characters and measurements of over 392 museum specimens and found no evidence of clinal change between the northern and southern continental populations, it is concluded that three biological species can be identified in the crested caracaras: the insular Guadalupe Caracara (Curacara lutosus); and two continental species, Northern and Southern caracara, neither of which shows subspecific variation.

Phylogeny and Taxonomy of the Patagonian Miocene Falcon Thegornis musculosus Ameghino, 1895 (Aves: Falconidae)

The ecotonal margins produced by the vanishing of humid forests that developed during changes in Patagonian plant communities throughout early Neogene times are hypothesized as a plausible scenario to understand the evolution of this basal clade of falcons.

Fossil vertebrates from the Bahamas

Olson, Storrs L., editor. Fossil Vertebrates from the Bahamas. Smithsonian Contributions to Paleobiology, number 48, 65 pages, 12 figures, 1982.•The three papers in this volume summarize the previous

Ecological and reproductive constraints of body size in the gigantic Argentavis magnificens(Aves, Theratornithidae) from the Miocene of Argentina

Abstract. Several estimates of ecological and reproductive parameters are offered for the giant Argentavis magnificens (Teratornithidae), from upper Miocene localities in Argentina. Using the

Exceptionally well preserved late Quaternary plant and vertebrate fossils from a blue hole on Abaco, The Bahamas

The exquisitely preserved fossils from Sawmill Sink suggest a grassy pineland as the dominant plant community on Abaco in the Late Pleistocene, with a heavier component of coppice (tropical dry evergreen forest) in the late Holocene.

VERTEBRATE RECORDS | Late Pleistocene of South America

  • M. Ubilla
  • Environmental Science, Geography
  • 2007

A New Species of Caracara (Milvago) from Quaternary Asphalt Deposits in Cuba, with Notes on New Material of Caracara creightoni Brodkorb (Aves:Falconidae)

An extinct caracara, Milvago carbo, new species, is described from Quaternary asphalt deposits of Las Breas de San Felipe, northern Matanzas Province, Cuba, from tarsometatarsi, tibiotarsi, and a


This work serves as a compendium of anatomical resources upon which a companion phylogenetic analysis of Aves and related Theropoda (Avialae) was based and summarized, to the extent feasible, previously published characters for which inclusion in the present work was judged to be unreliable or lacking sufficient clarity.


Molecular data and variation in syringeal morphology were used to infer a phylogeny for the family Falconidae and a biogeographic hypothesis implies that the origin and early diversification of the family occurred in South America.

Allometry of the leg bones of moas (Dinornithes) and other birds

Shortening of the tarsometatarsus in moas and narrowing of the pelvis in other ratites are interpreted as adaptations concerned with balancing the bird on its feet following reduction of the wings.