Corimbatichnus fernandezi: A cluster of fossil bee cells from the Late Cretaceous-early Tertiary of Uruguay

Abstract

Corimbatichnus fernandezi n.igen, n. isp. is a cluster of fossil bee cells from the Uruguayan Late Cretaceous-early Tertiary Asencio Formation. It is composed of rows of small excavated cells contained in paleosol peds. Cells have inner surfaces somewhat rough and are closed with loose material. Separation among cells is very thin, and the cells are orientated uniformly, showing a great economy of space as in some halictine constructions. Corimbatichnus can be distinguished from Rosellichnus and Uruguay by its convex face, excavated cells and the spatial arrangement of them.