Journal
ACTA PALAEONTOLOGICA POLONICA
Volume 63, Issue 3, Pages 607-616Publisher
INST PALEOBIOLOGII PAN
DOI: 10.4202/app.00491.2018
Keywords
Salviniales; Hydropteridales; Arcellites; megaspores; Cenomanian; South America; Argentina
Categories
Funding
- Consejo Nacional de Investigaciones Cientificas y Tecnicas
- [PIP-2014-0259]
- [PIP-2013-0388]
Ask authors/readers for more resources
We report here two megaspores species related to the aquatic ferns of the order Salviniales from the Late Cretaceous Mata Amarilla Formation (Austral Basin), southern Santa Cruz Province, Argentina. We identified the species Arcellites disciformis and Balmeisporites cf. B. holodictyus. The presence of A. disciformis, in particular, is significant not only because it represents the first record for the Southern Hemisphere, indicating a bi-hemispheric distribution for the species, but also because it increases the diversity of this genus in Patagonia. The new findings of salvinialean megaspores highlight the importance of water ferns in the Late Cretaceous aquiferous enviroments of southern South America. The common occurrences of Arcellites and Balmeisporites, whether in shallow, fresh or brackish water facies, indicates aquatic paleoenvironment of the Mata Amarilla Formation, as was inferred also from the sedimentological evidence. Their presence also indicates that the lower and middle levels of the Mata Amarilla Formation can be attributed to the megaspore Zone M3 (Albian-Cenomanian) defined for the Cretaceous of Patagonia.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available