Analysis of a sample from the Orgueil meteorite which fell near Orgueil, France, in 1864, showed the presence of microfossils of unknown age and affinities, most of which resemble unicellular algae with acid-resistant pellicles, as well as a few Cretaceous microfossils and some Recent contaminants. Caelestites sexangulatus n.g. n.sp. and Clausisphaera fissa n.g. n.sp. are represented among the forms described.