Marsupials and their fossil relatives, which collectively comprise Metatheria, have been of
scientific interest for centuries, with many aspects of their evolution and systematics subject …

While for decades behavioural ecologists have studied the costs and benefits of group
living, solitary living has received little attention. Instead, it was assumed to be the default …

The current literature on marsupial phylogenetics includes numerous studies based on
analyses of morphological data with limited sampling of Recent and fossil taxa, and many …

Alcidedorbignya inopinata is a basal pantodont (Placentalia, Mammalia) of small body size,
from the early Palaeocene of the Santa Lucia Formation at Tiupampa, Bolivia. Tiupampa is …

When sociality evolved and in which groups remain open questions in mammalian
evolution, largely due to the fragmentary Mesozoic mammal fossil record. Nevertheless …

The fossil metatherian assemblage from La Venta (Middle Miocene, Colombia) is one of the
most diverse in South America, and it is critical to understand the Neogene radiation of this …

Peradectidae are Paleogene 'opossum-like'stem-metatherians, largely Laurasian, whose
evolutionary history remains unclear. Based on new remains (mainly dental) discovered in …

Sociality comes with specific cognitive skills that allow the proper processing of information
about others (social recognition), as well as of information originating from others (social …

Andinodelphys cochabambensis Marshall & Muizon, 1988 is one of the best preserved
metatherian species from the early Palaeocene fauna of Tiupampa (Bolivia). It is …

The present paper describes a disarticulated skull of Allqokirus australis, a basal
sparassodont (Metatheria, Mammalia) from the early Palaeocene (c. 65 Ma.) of Tiupampa …