The Origin and Evolution of Birds

Dnn,; Feduccia, Alan

doi:10.2307/1521796

Cited by 32 publications

(2 citation statements)

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“…Anhimidae (late Oligocene or Early Miocene-Recent) are medium-large, almost entirely herbivorous birds that differ from the duck morphotype in that they have non-palmated feet and a short, straight beak. Its three extant species have an exclusively South American distribution but putative anihimids have been reported in the early Eocene of North America and Europe (Ericson, 1997;Feduccia, 1999). The fossil record of Argentinian screamers included Loxornis clivus Ameghino, 1895 that was exhumed in sediments from the late Oligocene of Santa Cruz Province, and considered to be of an uncertain family by Tonni (1980), but later relocated to Anhimidae (Alvarenga, 1999).…”

Section: Galloanseraementioning

confidence: 99%

“El Estado Actual Del Conocimiento De Las Aves Cenozoicas De Argentina” De Tonni 1980: Cuatro Décadas Después

Tambussi,

Dregange,

de Mendoza

2023

PEAPA

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The present state of knowledge of the Cenozoic birds of Argentina" published in Contribution in Sciences in the year 1980, written by the argentine paleontologist Eduardo Pedro Tonni, became a must-read for those interested in the record of fossil birds. In that work, all the records known up to that time are compiled and some comments are made. Since then, there have been crucial advances in unraveling the diversity of Cenozoic birds in Argentina. Based on that work, here is a detailed updated, and annotated list of all known avian records in Argentina that includes representatives of Palaeognathae (Tinamiformes and Rheiformes), Galloanseres (Anseriformes), and Neoaves (Sphenisciformes, Procellarifomes, Suliformes, Charadriiformes, Phoenicopteriformes, Ciconiiformes, Pelecaniformes, Coraciimorphae, Cathartiformes, Accipitriformes, Falconiformes, Cariamiformes, Psittaciformes and Passeriformes). Besides, a substantial contribution is that here are photographs of the holotypes of all the new species that were nominated after Tonni's paper.

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Section: Galloanseraementioning

confidence: 99%

“El Estado Actual Del Conocimiento De Las Aves Cenozoicas De Argentina” De Tonni 1980: Cuatro Décadas Después

Tambussi,

Dregange,

de Mendoza

2023

PEAPA

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“…The copyright holder for this preprint this version posted June 14, 2023. ; https://doi.org/10.1101/2023.06.13.544555 doi: bioRxiv preprint previously proposed phylogenetic arrangements included Anseriformes as sister to the neoavian clades Charadriiformes (Olson & Feduccia, 1980;Feduccia, 1999) and 'Ciconiiformes' (Ericson, 1996), now recognised as a polyphyletic assemblage including storks, herons, ibises and flamingos (Ericson et al, 2006;Hackett et al, 2008;Jarvis et al, 2014;Kuramoto et al, 2015;Prum et al, 2015;Reddy et al, 2017;Kuhl et al, 2021), with Galliformes sometimes instead hypothesised to form a clade with Palaeognathae (Feduccia, 1999;Bourdon et al, 2010). Although the monophyly of crown Galloanserae is no longer controversial, the scarcity of osteological synapomorphies diagnosing the clade imposes challenges for identifying representatives of total-group Galloanserae in the fossil record.…”

Section: Introductionmentioning

confidence: 99%

Taphonomic damage obfuscates interpretation of the retroarticular region of theAsteriornismandible

Crane

Benito

Chen

et al. 2023

Preprint

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Asteriornis maastrichtensis, from the latest Cretaceous of Belgium, is among the oldest known crown bird fossils, and its three-dimensionally preserved skull provides the most substantial insights into the cranial morphology of early crown birds to date. Phylogenetic analyses recovered Asteriornis as a total-group member of Galloanserae (the clade uniting Galliformes and Anseriformes. One important feature supporting this placement was enlargement of the retroarticular processes, which form elongate caudal extensions of the mandible in extant Galloanserae. Here, we reinterpret the jaw of Asteriornis and illustrate that the caudalmost portion of the mandibles are in fact not preserved. Instead, the caudal extremities of both the left and right mandibular rami extend to the surface of the fossil block containing the holotype skull, where they have eroded away. The originally identified retroarticular process of the right mandible - which exhibits a morphology and orientation strikingly similar to the retroarticular processes of certain extant and fossil galloanserans, including the early Palaeogene total-clade anseriforms Conflicto and Nettapterornis - instead represents a twisted and caudally displaced medial process. Nonetheless, anatomical comparisons with extant taxa reveal that we are unable to exclude the possibility that Asteriornis exhibited robust retroarticular processes comparable to those of extant Galloanserae. In light of the reinterpreted morphology of the Asteriornis mandible, we update the original anatomical character matrix used to investigate its phylogenetic relationships, and our revised phylogenetic analyses continue to support its position as a total-group galloanseran, as initially interpreted. We demonstrate additional morphological traits of the mandible supporting this phylogenetic position and provide new data on the nature and distribution of retroarticular processes among early crown birds.

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