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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
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
Building 237, Room 1117
College Park, MD 20742
Phone: 301-405-4084 Email: firstname.lastname@example.org
Fax (Geol): 301-314-9661 Fax (CPS-ELT): 301-405-0796