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Dinosaur news stories and 2 non-dino papers
From: Ben Creisler
Some recent dinosaur-related news stories:
Dinosaur National Monument visitor center reopens
New unnamed hadrosaur from Alberta
Dinosaur auction in Paris
I posted some links in French about this story a few months ago. Later this
week, the dinosaur fossils will be auctioned by Sotheby's in Paris.
Commercial sales are a touchy topic on the DML but we can hope the
specimens end up in museums. The following link has a video and text in
The Early Jurassic thyreophoran Emausaurus was found in a clay pit in
northeast Germany in 1963, but not described until 1990. Casts of the
specimen are part of a special exhibit at the dinosaur's namesake
university (Ernst Moritz Arndt University = EMAU) in Greifswald, Germany,
along with a painting.
A couple of items of interest about the original specimen in the news
stories. The fossils are suffering from pyrite disease and need to be
reconserved to remove the older preservative material used.
The bones were found in a nodule that may have been a bone pellet
regurgitated by a crocodile.
Stories in German:
Museum of Natural History Vienna reopens dinosaur display
The museum has updated its dinosaur exhibit:
photos and video
video interview with director (in German) with glimpses of animated
A couple of Mesozoic non-dino papers:
Jurassic salamanders from Mongolia
The pdf is free at link.
LiPing Dong, DiYing Huang and Yuan Wang (2011)
Two Jurassic salamanders with stomach contents from Inner Mongolia, China.
Chinese Science Bulletin (advance online publication)
Conchostracans and corixids are part of the diet of extant salamanders, an
ecologically important fact in a lacustrine environment. Here we report
their discovery in the guts of the aquatic Jurassic salamanders
Jeholotriton paradoxus and Chunerpeton tianyiensis, formerly abundant at
Daohugou, Ningcheng County, Inner Mongolia, China. This reveals something
of the ecology of this important, ancient, vertebrate and invertebrate
assemblage. The new fossil evidence indicates the highly selective feeding
of these Jurassic salamanders; Jeholotriton preyed only on juveniles of the
conchostracan Euestheria luanpingensis, and Chunerpeton only on the corixid
Yanliaocorixa chinensis. We can infer the dietary differences as a
consequence of different jaw and hyoid structures; and thus niche
partitioning in Jurassic salamanders.
Achim G. Reisdorf, Michael W. Maisch and Andreas Wetzel (2011)
First record of the leptonectid ichthyosaur Eurhinosaurus longirostris from
the Early Jurassic of Switzerland and its stratigraphic framework.
Swiss Journal of Geosciences 104(2): 211-224
An incomplete skull of the leptonectid ichthyosaur Eurhinosaurus
longirostris found in the Rietheim Member (previously ?Posidonienschiefer?;
Toarcian, Early Jurassic) of Staffelegg, Canton Aargau, is the first record
from Switzerland of this taxon and supports the status of Eurhinosaurus
longirostris as a palaeobiogeographic very widespread ichthyosaur species
in the Early Toarcian of Western Europe. Being from either the Bifrons or
Variabilis zone, it is one of the youngest records of Eurhinosaurus and one
of the few diagnostic ichthyosaur finds from this time interval. The
partial skull is well articulated and preserved three-dimensionally in a
carbonate concretion. Both the mode of preservation of the ichthyosaur and
an associated ammonoid (Catacoeloceras raquinianum) provided the age of the
concretion, which had been collected from scree. Taphocoenosis and
taphonomy show the C. raquinianum to be one of few non re-worked fossils
recorded from the Early to Late Toarcian boundary (Bifrons/Variabilis zone)
of northern Switzerland in general and of this ammonite species in
particular. The Toarcian section at Staffelegg differs from other
localities where strata of the same age are exposed with respect to facies
variations of the Rietheim Member (previously ?Posidonienschiefer?, Early
Toarcian) and the extraordinarily high thickness of the Gross Wolf Member
(previously ?Jurensis-Mergel?, Late Toarcian.
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