For most of the past 150 years the presence of only giant megatheriine ground sloths in the Pleistocene of Brazil has been recognised. However, it has recently been claimed that a dwarf Eremotherium species was present ...

The problem of an 'Armorica microplate', detached from Gondwana and having had during part of the Palaeozoic an independent latitudinal evolution, is reconsidered in terms of a critical review of the palaeomagnetic data ...

The recovery and radiation of the Early Jurassic ammonoid morphospace, as represented by nine morphologic groups identified in an earlier study, are traced through the first 36 subzones of the Hettangian to Domerian time ...

The present paper is a report of work completed by the group 'Friends of Paleobiogeography' on the principles of palaeobiogeographic classification and nomenclature of palaeobiogeographic units (biochoremas). These principles ...