Pumiliornis tessellatus is an ancient bird from the Middle Eocene of Messel, Hesse, Germany. It is described as a wren-sized[1]anisodactyl bird with a long, slender bill and strong hallux. Its species name tessellatus, meaning "mosaic" in Latin, is a reference to its unusual distribution of characters and uncertain phylogenetic placement.[2][3] It has some anatomical affinities with Cuculiformes, but similar fossils that might be related to this taxon do not.[4]
In 2014, a new specimen of Pumiliornis was described that showed preserved stomach contents of pollen grains from a eudicotyledonousangiosperm, making it the earliest fossil evidence of flower-visiting behavior in birds.[5]
References
^Mayr, Gerald (2008). "Pumiliornis tessellatus MAYR, 1999 revisited - new data on the osteology and possible phylogenetic affinities of an enigmatic Middle Eocene bird". Paläontologische Zeitschrift. 82/3 (3): 247–253. doi:10.1007/BF02988891. S2CID55757331.