[1] Maculicorpus is known from a microbialite bed discovered in the Troistedt Quarry near Weimar, as part of the Meißner Formation.

The microbialite has been dated to the late Anisian to early Ladinian.

[2] The specimens referred to Maculicorpus appear as flat patches, brown to ochre in color, varying between 1 mm (0.04 in) and 5 mm (0.20 in) in diameter.

The outline is irregular and varies in overall shape from circular to elongate, fan-shaped or multi-lobed.

The holotype, 4.5 mm (0.18 in) in length, is constricted in the middle, appearing as an aggregate of a larger, irregularly rounded portion and a smaller elliptical one.