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NOT The Most Important Papers in the History of the Universe
...or maybe they are; who the heck am I to judge?!?
Milàn, J., and Loope, D.B. 2007. Preservation and erosion of theropod tracks
in eolian deposits: examples from the Middle Jurassic Entrada Sandstone,
Utah, U.S.A. Journal of Geology 115(3):375-386.
ABSTRACT: The Middle Jurassic Entrada Sandstone, exposed near the town of
Escalante, southern Utah, consists of large-scale cross-bedded eolian
deposits that are interbedded with horizontally laminated sand sheets and
thin sets of eolian cross-strata, representing periods with a moister
climate. The flat-bedded units contain numerous tracks and trackways from
small to large-sized theropod dinosaurs. These tracks are today exposed in
several distinct erosional states, allowing detailed studies of track and
undertrack formation in eolian deposits. Tracks that originally were
emplaced on sloping surfaces show, in their present-day erosional state, a
morphology distinct from those originally emplaced on horizontal surfaces.
Further, the range of eroded track morphologies can help identify badly
eroded tracks from nonbiogenic structures in similar deposits.
Martínez, R.D., and Novas, F.E. 2006. Aniksosaurus darwini gen. et sp. nov.,
a new coelurosaurian theropod from the early Late Cretaceous of central
Patagonia, Argentina. Revista del Museo Argentino de Ciencias Naturales,
ABSTRACT: The theropod dinosaur Aniksosaurus darwini gen. et sp. nov. has
been recovered from the Upper Cretaceous, Bajo Barreal Formation, of Central
Patagonia. Aniksosaurus darwini gen. et sp. nov. was a small tetanurine,
approximately 2 meters long. Aniksosaurus exhibits several unique traits
(e.g., cranial cervical vertebrae with dorsoventrally deep neural arches,
provided with a pair of cavities at their cranial surfaces; neural canal
wide; cranial caudals with ventral sagittal keel, and transverse processes
triangular-shaped in dorsal view; manual ungual phalanges robust; ilium with
extremely expanded brevis shelf; femur with deep notch for M.
Iliotrochantericus; metatarsal and digit IV of pes transversely narrow).
Available postcranial bones of Aniksosaurus exhibit derived features of
Coelurosauria (e.g., ilium with well developed cuppedicus fossa; femur with
anterior trochanter proximally projected, almost reaching the level of the
articular head; greater trochanter craniocaudally expanded; femoral head
rectangular-shaped in cranial aspect; and fibular shaft craniocaudally
narrow), as well as characteristics suggesting that the new Patagonian taxon
is more derived than some basal coelurosaurians such as compsognathids,
Ornitholestes, and coelurids. Comparisons with maniraptoriforms (a clade
including Ornithomimosauria, Tyrannosauridae, Oviraptorosauria,
Alvarezsauridae and Paraves) support that Aniksosaurus is less derived than
Yes, the 2006 in that one is correct.
Jerry D. Harris
Director of Paleontology
Dixie State College
225 South 700 East
St. George, UT 84770 USA
Phone: (435) 652-7758
Fax: (435) 656-4022
"Trying to estimate the divergence times
of fungal, algal or prokaryotic groups on
the basis of a partial reptilian fossil and
protein sequences from mice and humans
is like trying to decipher Demotic Egyptian with
the help of an odometer and the Oxford
-- D. Graur & W. Martin (_Trends
in Genetics_ 20, 2004)