- Source: La Matilde Formation
La Matilde Formation is a Jurassic geological formation in the Austral Basin of Santa Cruz Province, Patagonia, Argentina. It is dated to the Middle to Late Jurassic. From the Bathonian age (164.7 to 167.7 million years ago) to the Kimmeridgian age (150.8 to 155.7 million years ago) at the latest.
The area was once part of the subtropical and temperate regions of the southern supercontinent Gondwana in the Mesozoic era, a more or less continuous landmass consisting of what is now modern South America, Africa, Antarctica, Australia, New Zealand, and New Guinea.
Description
La Matilde consists primarily of sedimentary rocks. It includes claystone, coal beds, conglomerates, siltstones, sandstones, and volcanic tuff. La Matilde overlies but sometimes intersperses with the Middle Jurassic Chon Aike Formation. The two formations are the subunits of the Bahía Laura Group.
Fossil content
La Matilde is known for the abundant fossils recovered from it. Notable fossil localities in the formation include the Cerro Cuadrado Petrified Forest, the Cerro Madre e Hija Petrified Forest, and the remains and trace fossils (including trackways) of dinosaurs in the Laguna Manantiales Farm.
Fossil taxa recovered from the La Matilde Formation include:
Flora
Ichnofossils
See also
List of stratigraphic units with theropod tracks
List of fossil sites
References
= Bibliography
=Channing, Alan; Zamuner, Alba B.; Zúñiga, Adolfo (2007), "A new Middle–Late Jurassic flora and hot spring chert deposit from the Deseado Massif, Santa Cruz province, Argentina", Geological Magazine, 144 (2): 401–411, Bibcode:2007GeoM..144..401C, doi:10.1017/S0016756807003263, retrieved 2019-03-26
Clarke, John T.; Warnock, Rachel C.M.; Donoghue, Philip C.J. (2011), "Establishing a time-scale for plant evolution", New Phytologist, 192 (2011): 266–301, doi:10.1111/j.1469-8137.2011.03794.x, PMID 21729086, retrieved 2019-03-26
Iglesias, Ari; Artabe, Analia E.; Morel, Eduardo M. (2011), "The evolution of Patagonian climate and vegetation from the Mesozoic to the present", Biological Journal of the Linnean Society, 103 (2): 409–422, doi:10.1111/j.1095-8312.2011.01657.x
Leonardi, Giuseppe (1994), Annotated Atlas of South America Tetrapod Footprints (Devonian to Holocene) with an appendix on Mexico and Central America, Ministerio de Minas e Energia - Companhia de Pesquisa de Recursos Minerais, Geological Service of Brazil, pp. 1–248, retrieved 2019-03-25
Sequiera, Andrea S.; Farrell, Brian D. (2001), "Evolutionary origins of Gondwanan interactions: How old are Araucaria beetle herbivores?", Biological Journal of the Linnean Society, 74 (4): 459–474, doi:10.1111/j.1095-8312.2001.tb01405.x, retrieved 2019-03-26
Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (2004), The Dinosauria, 2nd edition, Berkeley: University of California Press, pp. 1–880, ISBN 0-520-24209-2, retrieved 2019-02-21
Further reading
2009 - Una nueva Equisetaceae fértil de la Formación La Matilde, Jurásico Medio, Argentina
Kata Kunci Pencarian:
- La Matilde Formation
- Notobatrachus
- Agathoxylon
- List of fossil sites
- 2024 in paleontology
- Chon Aike Formation
- Pararaucaria
- Araucaria mirabilis
- 2018 in paleobotany
- Araucarites sanctaecrucis
