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Chasmosaurine sinuses and a proctological sturgeon



I don't think anyone has posted on the following:

Farke, A.A. 2006. Morphology and ontogeny of the cornual sinuses in 
chasmosaurine dinosaurs (Ornithischia: Ceratopsidae). Journal of
Paleontology 80:780-785.

Andy documents and discusses the variation (taxonomic, ontogenetic, etc.) of 
the sinuses within the postorbital horns of
chasmosaurines, setting up possible lines of investigation for future work.

Grande, L. and E. J. Hilton. 2006. An exquisitely preserved skeleton 
representing a primitive sturgeon from the Upper Cretaceous
Judith River Formation of Montana (Acipenseriformes: Acipenseridae: n. gen. et 
sp.). Paleontological Society Memoir 65. 1-39.

A sturgeon found inside the body cavity of a hadrosaur! In fact, the THIRD 
sturgeon found inside the abdominal cavity of a
hadrosaur!!! (The authors argue that while they might have been scavenging the 
hadrosaur, or perhaps feeding on the smaller
scavengers of the hadrosaur, this common occurrance might be purely taphonomic: 
the belly of dead hadrosaurs being a favorable
enviroment to preserve whole fish that happen to swim all the way in).

Just in case anyone asks, the fish is too well articulated to have been 
swallowed or chewed or digested by the hadrosaur.


                Thomas R. Holtz, Jr.
        Senior Lecturer, Vertebrate Paleontology
Department of Geology           Director, Earth, Life & Time Program
University of Maryland          College Park Scholars
        Mailing Address:
                Building 237, Room 1117
                College Park, MD  20742

http://www.geol.umd.edu/~tholtz/
http://www.geol.umd.edu/~jmerck/eltsite
Phone:  301-405-4084    Email:  tholtz@geol.umd.edu
Fax (Geol):  301-314-9661       Fax (CPS-ELT): 301-405-0796