Chapadmalalan

The Chapadmalalan ('Chapalmalan') age is a period of geologic time (~5.0–3.3 Ma) in the Pliocene epoch of the Neogene, used more specifically in the South American Land Mammal Ages.

Chronology

The Chapadmalalan follows the Montehermosan age and precedes the Marplatan age.^[1] The source locality for the Chapadmalalan is the Chapadmalal Formation near Chapadmalal, Buenos Aires Province, Argentina.

Fauna

'Lower Chapadmalalan'

The Chapadmalalan age was previously divided into a lower and upper stage, with the lower stage hosting the "Neocavia depressidens" biozone. However, this was revised into a single biozone.^[1]

Biozone

Previously characterizing the Upper Chapadmalalan, the taxa Paraglyptodon chapadmalensis previously defined the biozone of the entire Chapadmalalan age,^[1] however revisions found P. chapadmalensis to be a juvenile of Glyptodon.^[2]^[3]

References

1 2 3 Cione, Alberto Luis (2015). The Great American Biotic Interchange: A South American Perspective. SpringerBriefs in Earth System Sciences Ser. Germán Mariano Gasparini, Esteban Soibelzon, Leopoldo Héctor Soibelzon, Eduardo Pedro Tonni. Dordrecht: Springer Netherlands. ISBN 978-94-017-9791-7.
↑ Cruz, Laura E.; Fernicola, Juan C.; Taglioretti, Matias; Toledo, Nestor (2016-03-01). "A reassessment of the taxonomic status of Paraglyptodon Castellanos, 1932 (Mammalia, Cingulata, Glyptodontia)". Journal of South American Earth Sciences. 66: 32–40. doi:10.1016/j.jsames.2015.11.012. hdl:11336/46570. ISSN 0895-9811.
↑ Zurita, Alfredo E.; Taglioretti, Matías; DE Los Reyes, Martín; Cuadrelli, Francisco; Poire, Daniel (2016-06-07). "Regarding the real diversity of Glyptodontidae (Mammalia, Xenarthra) in the late Pliocene (Chapadmalalan Age/Stage) of Argentina". Anais da Academia Brasileira de Ciências. 88 (2): 809–827. doi:10.1590/0001-3765201620150113. hdl:11336/30011. ISSN 1678-2690. PMID 27276376.