Thanks for all the answers. In case someone is also interested on this matter, here is a good site, still in construction, for starters - like myself - in the micro-fossils area:
STOOPS, G. 2003. Guidelines for analysis and description of soil and regolith thin sections. Soil Science of America, Inc. Madison, Wisconsin, USA. 174 pp.
STOOPS, G. 2003. Guidelines for analysis and description of soil and regolith thin sections. Soil Science of America, Inc. Madison, Wisconsin, USA. 174 pp.
STOOPS, G. 2003. Guidelines for analysis and description of soil and regolith thin sections. Soil Science of America, Inc. Madison, Wisconsin, USA. 174 pp.