International audienceThe study of Devonian Colombian trilobites and inarticulate brachiopods allows to recognize two biostratigraphic levelswithin the Floresta Formation. The first level, in the lower part of the formation, is late Emsian in age, and yields 14 distincttrilobite taxa, including Colombianaspis carvalhoae gen. et sp. nov. The second one, in the upper part of the formation,is assigned to the Givetian based on the co-occurrence of the genera Dipleura and Greenops; this is the first recordof a Givetian age for the upper part of the Floresta Formation. The inarticulate brachiopods collected from the uppermostpart of the formation suggest a Givetian age. Inarticulate brachiopods as well as the trilobites show close affinities withthe North Eastern Americas Realm, but they also suggest European affinities. The late Emsian occurrence of calmoniidsfrom Colombia is indicative of restricted faunal exchanges with the Malvinokaffric Realm