[dinosaur] Palaeotis hindlimb and palaeognathous affinities of Eocene "crane-like" birds (free pdf)

Ben Creisler
[email protected]

A new paper in open access:


Gerald Mayr (2019)
Hindlimb morphology of Palaeotis suggest palaeognathous affinities of the
Geranoididae and other "crane-like" birds from the Eocene of the Northern
Hemisphere.
Acta Palaeontologica Polonica (in press)
doi:https://urldefense.proofpoint.com/v2/url?u=https-3A__doi.org_10.4202_app.00650.2019&d=DwIBaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=is4f78iL1LMtuWEoRjll9R-a53atdR8CKlyWGG1kqao&s=vqvM5YLtr-ZWfh8K3Tt9sIJNEFdwWLMzPHes__dkUJA&e= 
https://urldefense.proofpoint.com/v2/url?u=http-3A__app.pan.pl_article_item_app006502019.html&d=DwIBaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=is4f78iL1LMtuWEoRjll9R-a53atdR8CKlyWGG1kqao&s=Y_Qy9nJj7Se4EPcINAePXUSvQCvmC5BOMHn75IptfbE&e= 

Free pdf:
https://urldefense.proofpoint.com/v2/url?u=http-3A__app.pan.pl_archive_published_app64_app006502019.pdf&d=DwIBaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=is4f78iL1LMtuWEoRjll9R-a53atdR8CKlyWGG1kqao&s=iDlcQMGRgOC5wD2LzLReDLqcKToRRerro6Eut3lu1YU&e= 




The early/middle Eocene Palaeotis weigelti is a flightless bird, which
occurs in the fossil localities Messel and Geiseltal (Germany). The species
is assigned to the Palaeognathae and some authors considered it to be a
stem group representative of the Struthionidae (ostriches). Even though
several partial skeletons have been found, the osteology of P. weigelti is
incompletely known. In the present study, new details of the hindlimb
morphology of the species are reported based on unpublished and previously
described fossils from the Geiseltal. These data show that the recently
described Galligeranoides boriensis from the early Eocene of southern
France is another representative of the Palaeotididae and the oldest record
of the taxon. It is further noted that Palaeogrus princeps from the middle
Eocene of Italy, which was previously assigned to the Gruidae (cranes), may
be another representative of the Palaeotididae. Galligeranoides was before
assigned to the North American Geranoididae, a taxon mainly known from
hindlimb elements. The Geranoididae are usually considered to be closely
related to the Asian Eogruidae and both taxa are currently classified in
the Gruiformes (cranes and allies). However, as detailed in the present
study, derived similarities suggest close affinities between the
Palaeotididae and Geranoididae. Eogruids were identified as stem group
representatives of the palaeognathous Struthionidae by some earlier
authors, and if close affinities between Palaeotididae and Geranoididae are
corroborated in future analyses, palaeognathous affinities of the Eogruidae
need to be critically revisited.


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