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.23
References
References
- 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.