Also known as Rotch Dome
Where: Byers Peninsula, Antarctica (62.6° S, 61.0° W: paleocoordinates 59.1° S, 47.6° W)
• coordinate stated in text
• small collection-level geographic resolution
When: Cerro Negro Formation (Byers Group), Aptian (125.0 - 113.0 Ma)
• For a detailed revision of the geology of the area, see Párica et al. (2007) and Vera (2012).
• formation-level stratigraphic resolution
Environment/lithology: terrestrial; lithified conglomerate and lithified shale
•Sedimentary description: At the bottom is siliceous volcaniclastic rocks, followed by welded ignimbrites, then tuffs lapilli mainly basaltic and upper sandstones and basaltic conglomerates.
Size classes: macrofossils, microfossils
• Plant debris, woods, palynomorphs.
Preservation: mold/impression, soft parts, original sporopollenin, original cellulose, replaced with silica
Collected by M. Remesal, F. Salani and C. Párica in 1997-; reposited in the MACN
Collection methods: surface (in situ), chemical, mechanical, peel or thin section, hydrochloric, hydroflouric,
• Museum repositories: Paleobotany Collection of the Museum of Natural Sciences "Bernardino Rivadavia"
Primary reference: E. I. Vera. 2010. Estudios anatómicos en paleofloras del Aptiano de Antártida y Patagonia, y su comparación. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales 294 [C. Jaramillo/J. Moreno]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 151291: authorized by Carlos Jaramillo, entered by Jessica Moreno on 26.09.2013, edited by Evangelos Vlachos
Creative Commons license: CC BY (attribution)
Taxonomic list
Bryopsida | |
| |
Cycadopsida | |
Taeniopteris sp. Brongniart 1828 cycads | |
Polypodiopsida | |
| |
Yavanna chimaerica n. gen. n. sp., Cyatheaceae "sp."
| |
Millerocaulis australis Vera 2008
Millerocaulis cf. australis Vera 2008
Phyllopteroides sp. Medwell 1954 | |
? Ptisana sp. Murdock 2008 | |
Cyatheacidites annulatus Cookson 1947 | |
Sphenopteridae | |
Sphenopteris sp. Sternberg 1825 | |
Eocyathea remesaliae | |
Eocyathea remesaliae Césari 2006 | |
Alienopteris livingstonensis | |
Alienopteris livingstonensis Vera 2009 |