PALAEOMOHRIA SPORES FROM THE CENOMANIAN IN PATAGONIA, ARGENTINA

Authors

  • Patricio E. Santamarina Museo Argentino de Ciencias Naturales "Bernardino Rivadavia" (MACN-CONICET), Ciudad Autónoma de Buenos Aires, Argentina
  • Viviana D. Barreda Museo Argentino de Ciencias Naturales "Bernardino Rivadavia" (MACN-CONICET), Ciudad Autónoma de Buenos Aires, Argentina
  • Ari Iglesias Instituto de Investigaciones en Biodiversidad y Medioambiente (INIBIOMA, CONICET-UNCO), San Carlos de Bariloche, Río Negro, Argentina
  • Augusto N. Varela Y-TEC S.A (CONICET), Villa Progreso, Buenos Aires, Argentina| Cátedra de Micromorfología de Suelos, Facultad de Ciencias Naturales y Museo, Calle 122 y 60 s/n, B1900, La Plata, Buenos Aires, Argentina; 4C tedra de Micromorfolog a de Suelos, Facultad de Ciencias Naturales y Museo, La Plata, Buenos Aires, Argentina

DOI:

https://doi.org/10.5710/AMGH.22.02.2021.3407

Keywords:

Late Cretaceous, Patagonia, Anemiaceae, Fossil fern, Gondwana

Abstract

We report the first Cenomanian record of Palaeomohria in southern South America. This finding comes from the Mata Amarilla Formation, with outcrops in the Austral-Magallanes Basin, Santa Cruz Province. These spores are described in detail and their affinity within Anemiaceae is discussed. Based on both, the presence of distinctive sculptural features -hollow channeled muri- and the new phylogenetic studies, Palaeomohria is related to Anemia, either Mohria or Anemiorrhiza clades, basal groups within extant Anemiaceae. This new record extends the biostratigraphic range of Palaeomohria to the Cenomanian and increases the taxonomic richness of the Anemiaceae in the Late Cretaceous of Patagonia.

Additional Files

Published

2021-06-30

Issue

Vol. 58 No. 3 (2021)

Section

Paleontological Notes

License

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How to Cite

PALAEOMOHRIA SPORES FROM THE CENOMANIAN IN PATAGONIA, ARGENTINA. (2021). Ameghiniana, 58(3), 289–296. https://doi.org/10.5710/AMGH.22.02.2021.3407

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