Fósiles de microorganismos de vida afótica preservados en dos estalagmitas de Cueva Mayor (Karst de la Sierra de Atapuerca, Burgos, España)
- M.B. Muñoz-García 1
- J. Martín-Chivelet 1
- Ana Isabel Ortega 2
-
1
Universidad Complutense de Madrid
info
-
2
Centro Nacional de Investigación sobre la Evolución Humana
info
Centro Nacional de Investigación sobre la Evolución Humana
Burgos, España
ISSN: 1576-5172
Year of publication: 2012
Issue Title: VIII Congreso Geológico de España, Oviedo, 17-19 de julio, 2012.
Issue: 13
Pages: 123-126
Type: Article
More publications in: Geotemas (Madrid)
Abstract
The study of two Holocene stalagmites from the Karst of Sierra de Atapuerca (Burgos, Spain) has allowed the recognition and characterization of numerous, exceptionally preserved reticulate filaments which correspond to microorganisms of aphotic life. These microbial remains are micrometric in scale and appear associated to distinctivelly dark, millimeter-scale beds within the microstratigraphy of the speleothems. These beds are rich in phosphates that probably derived from bat guano. The filaments are found in small pores, individually or in strands of two or more individuals. Two different phenotypes have been differentiated, based in their size, morphology and the geometry of their reticulate pattern. Their phylogenetic adscription is however problematic.