The Neogene record of northern South American Native Ungulates

South America was isolated during most of the Cenozoic, and it was home to an endemic fauna. The South American Native Ungulates (SANUs) exhibited high taxonomical, morphological, and ecological diversity and were widely distributed on the continent. However, most SANU fossil records come from high...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
1. Verfasser: Carrillo, Juan D. (VerfasserIn)
Weitere Verfasser: Amson, Eli (VerfasserIn), Jaramillo, Carlos (VerfasserIn), Sánchez, Rodolfo (VerfasserIn), Quiroz, Luis (VerfasserIn), Cuartas, Carlos (VerfasserIn), Rincón, Aldo F. (VerfasserIn), Sánchez-Villagra, Marcelo R. (VerfasserIn)
Format: UnknownFormat
Sprache:eng
Veröffentlicht: Washington, D.C. Smithsonian Institution Scholarly Press 2018
Schriftenreihe:Smithsonian contributions to paleobiology number 101
Schlagworte:
Ungulates, Fossil > Paleontology > South America > Südamerika > Neogen > Huftiere > Fossile Tiere
Online Zugang:Cover
Inhaltsverzeichnis
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:South America was isolated during most of the Cenozoic, and it was home to an endemic fauna. The South American Native Ungulates (SANUs) exhibited high taxonomical, morphological, and ecological diversity and were widely distributed on the continent. However, most SANU fossil records come from high latitudes. This sampling bias challenges the study of their diversity dynamics and biogeography during important tectonic and biotic events, such as the Great American Biotic Interchange, the faunal exchange between North and South America after the formation of the Isthmus of Panama. We describe new SANU remains from the Neogene of the Cocinetas (northern Colombia) and Falcón (northwestern Venezuela) Basins. In the Cocinetas Basin, the middle Miocene fauna of the Castilletes Formation includes Hilarcotherium miyou sp. nov. (Astrapotheriidae), cf. Huilatherium (Leontiniidae), and Lambdaconus cf. L. colombianus (Proterotheriidae). The late Pliocene fauna of the Ware Formation includes a Toxodontinae indet. and the putative oldest record of Camelidae in South America. In the Falcón Basin, the Pliocene/Pleistocene faunas of the Codore and San Gregorio Formations include Falcontoxodon aguilerai gen. et sp. nov. and Proterotheriidae indet. We provide a phylogenetic analysis for Astrapotheriidae and Toxodontidae. The new data document a low-latitude provinciality within some SANU clades (e.g., Astrapotheriidae, Leontiniidae) during the middle Miocene. This contrasts with the wide latitudinal distribution of clades of other mammals recorded in the fauna, including the sparassodont Lycopsis padillai, the sloth Hyperleptus, and the proterotheriid Lambdaconus cf. L. colombianus.--Provided by publisher
Beschreibung:Includes bibliographical references
Beschreibung:67 Seiten
Illustrationen