Pierre Barrère

Back in Perpignan, he became professor of botany at the university and doctor in the military hospital.

In 1745 he published his Ornithologiae Specimen Novum, sive Series Avium in Ruscinone, Pyrenaeis Montibus, atque in Galliâ Aequinoctiali Observatarum, in Classes, genera & species, novâ methodo, digesta at Perpignan.

He published Observations anatomiques tirées des ouvertures d’un grand nombre de cadavres in 1753 at Perpignan.

[2] He published in 1746 his Observations sur l'origine et la formation des pierres figurées, et sur celles qui, tant extérieurement qu'intérieurement, ont une figure régulière & déterminée at Paris.

He proposed that the fossils of marine mollusks proved the presence of an ancient ocean.