| Anfiteatro de Ticó Formation | |
|---|---|
| Stratigraphic range: Aptian ~119–116 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓ | |
| Type | Geological formation |
| Unit of | Baqueró Group |
| Underlies | Bajo Tigre Formation |
| Lithology | |
| Primary | Sandstone, siltstone |
| Other | Conglomerate |
| Location | |
| Coordinates | 48°30′S 69°12′W / 48.5°S 69.2°W / -48.5; -69.2 |
| Approximate paleocoordinates | 49°24′S 35°24′W / 49.4°S 35.4°W / -49.4; -35.4 |
| Region | Santa Cruz |
| Country | Argentina |
| Extent | Deseado Massif |
| Type section | |
| Named for | Anfiteatro de Ticó, Santa Cruz, Argentina |
| Named by | Sergio Archangelsky |
  Anfiteatro de Ticó Formation (Argentina) | |
The Anfiteatro de Ticó Formation is a geological formation from the Deseado Massif in the province of Santa Cruz, Argentina.
Paleobiology
The Anfiteatro de Ticó preserves a rich and diverse flora including macrofossils, mesofossils, and microfossils. These have been object of detailed investigations since the 1960'.
Depositional environments
The formation is of continental origin, and includes riparian and lacustrine deposits.
Fossil content
The following fossils were reported from the formation:
Flora
- Ricciopsis grandensis
- Equisetites pusillus
- Cladophlebis tripinnata
- Cladophlebis antarctica
- Cyathea cyathifolia
- Baqueroites padulae
- Adiantopteris tripinnata
- Korallipteris vegagrandis
- Alkastrobus peltatus
- Apterocladus lanceolatus
- Morenostrobus fertilis
- Podocarpus dubius
- Squamastrobus tigrensis
- Tarphyderma glabra
- Tomaxellia degiustoi
- Tomaxellia biforme
- Trisacocladus tigrensis
- Ginkgoites tigrensis
- Ginkgoites ticoensis
- Allicospermum patagonicum
- Karkenia incurva
- Restrepophyllum chiguoides
- Eobowenia incrassata
- Sueria rectivervis
- Mesosingeria coriacea
- Mesosingeria oblonga
- Ticoa harrisii
- Ticoa lanceolata
- Ticoa magnipinnulata
- Pseudoctenis crassa
- Pseudoctenis dentata
- Ruflorinia sierra
- Ruflorinia pilifera
- Ruflorinia papillosa
- Ktalenia circularis
References
- Archangelsky, Sergio (1963). "A new Mesozoic flora from Ticó, Santa Cruz Province, Argentina". Bulletin of the British Museum (Natural History), Geology. 8 (2): 45–62. doi:10.5962/p.313876.
- Llorens, M.; Loinaze, V.S. Perez; Passalia, M.G.; Vera, E.I. (February 2020). "Palynological, megafloral and mesofossil record from the Bajo Grande area (Anfiteatro de Ticó Formation, Baqueró Group, Upper Aptian), Patagonia, Argentina". Review of Palaeobotany and Palynology. 273: 104137. doi:10.1016/j.revpalbo.2019.104137. hdl:11336/106118. ISSN 0034-6667.
- Perez Loinaze, Valeria S.; Vera, Ezequiel I.; Passalia, Mauro G.; Llorens, Magdalena; Friedman, Richard; Limarino, Carlos O.; Césari, Silvia N. (December 2013). "High-precision U–Pb zircon age from the Anfiteatro de Ticó Formation: Implications for the timing of the early angiosperm diversification in Patagonia". Journal of South American Earth Sciences. 48: 97–105. doi:10.1016/j.jsames.2013.08.005. hdl:11336/5366. ISSN 0895-9811.
- Anfiteatro de Ticó Formation at Fossilworks.org