Maastrichtian biodiversity of medium-and large-sized terrestrial vertebrates is well known in
Europe and, specifically, in the Iberian Peninsula. Regarding small-sized herpetofaunas
(lissamphibians and squamates), only a few European sites have yielded a significant
amount of fossils, and they are still poorly known from the Iberian Peninsula. Recent
fieldwork carried out at several sites exposing the Tremp Formation (Southern Pyrenees)
has revealed four new localities yielding microvertebrates. Two of them (L'Espinau and …