This book summarizes the most relevant published paleontological information, supplementedby our own original work, on the record of Mesozoic mammals? evolution, their close ancestorsand their immediate descendants. Mammals ...

The order Coleoptera is the most diversified group of the Class Insecta and is the largest group of the Animal Kingdom. This contribution reviews the Mesozoic insects and especially the coleopteran records from Argentina, ...

A new morphogenus, Korallipteris, is proposed to accommodate fertile or sterile fern fronds possessing essentially Gleichenia-like morphology (e.g., pinnate fronds with small pecopteroid pinnules) but lacking diagnostic ...

If we imagine walking through Mesozoic lands, we would be able to observe vertebrates with peculiar combinations of morphological traits, some of which would seem to be intermediary to animals seen today. We would witness ...

New high-resolution airborne magnetic data of Uruguay allowed constructing new maps concerning the spatial distribution of dyke swarms, main faults and other magnetic bodies, which compose the Uruguayan Shield. We combined ...

The role of the Serie Porfirítica as basement is known, as a consequence of the regional extension of the quartz porphyries in Patagonia. This would be a restricted concept of the word basement. Besides this aspect, it is ...