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Palaeotis is a genus of paleognath birds from the middle Eocene epoch of central Europe. One species is known, Palaeotis weigelti. The holotype specimen is a fossil tarsometatarsus and Phalanx bones. Lambrect (1928) described it as an extinct bustard (genus Otis), and gave it its consequent name ( Palaeotis means ancient bustard).Lambrecht, K. (1928) Palaeotis weigelti n. g. sp., eine fossil trappe aus der mitteleozanen Braunkohle des Geiseltales. Jahrbuch hallesch. Verband., Halle, n.s., 7:11. After a suggestion by Storrs L. Olson, a review of the type specimen and the referral of several other fossils by Houde and Haubold (1987) concluded that Palaeotis is a palaeognath and assigned it to the same order as ; the Struthioniformes.Houde, Peter. Haubold, Hartmut. (1987) Palaeovertebrata, 17 (2): 27 - 46, 6 figures. 20 June 1987. In 2021, it was considered a member of the family Paleotididae alongside Galligeranoides from the Early Eocene of France, which were found to be basal members of the Struthioniformes. In the 1930s a nearly complete fossil with catalog number GM 4362 was assigned to Palaeotis, probably by Lambrecht. Houde and Haubold found three additional specimens in the collection of the Geiseltalmuseum, Martin-Luther University, Halle/S., Germany. One of those three is the holotype specimen of Paleogrus geiseltalensis (=Ornithocnemus geiseltalensis, Lambrecht 1935). Houde and Haubold also requested permission to prepare a fossil cataloged as HLMD Me 7530 at the Hesseches Landesmuseum in Darmstadt, Germany. HLMD Me 7530 was collected from the famous Messel shales. When it was prepared, the two ornithologists assigned it to Palaeotis as well.
Other scientists are less convinced that Palaeotis is a struthioniform, placing it instead as a more basal ratite. It may be related to the mysterious Remiornis, a putative ratite known from the Eocene of France. Various other ratite remains also occur in the European Paleogene and early Miocene, and these may represent various independent lineages, leading to further confusion.Buffetaut, E.; Angst, D. (November 2014). "Stratigraphic distribution of large flightless birds in the Palaeogene of Europe and its palaeobiological and palaeogeographical implications". Earth-Science Reviews. 138: 394–408. doi:10.1016/j.earscirev.2014.07.001.Agnolin et al, Unexpected diversity of ratites (Aves, Palaeognathae) in the early Cenozoic of South America: palaeobiogeographical implications Article in Alcheringa An Australasian Journal of Palaeontology · July 2016 DOI: 10.1080/03115518.2016.1184898
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