The discovery of an embryonic dinosaur bonebed
from China is the oldest such occurrence in the fossil record.
Only about one square metre of the bonebed
has been excavated to date, but this small area also yielded pieces of eggshell, the oldest known for any terrestrial vertebrate.
Squier (1859) mentions the plain near the town of Tambla; clearly, the plain is the Comayagua Valley, so it seems likely that the bonebed
was located on the edge of the plain, most likely on an alluvial fan at the base of a ridge.
30 groups focus on a specific section that is known to contain juvenile centrosaurus fossils.
2012): A new Lower Cretaceous vertebrate bonebed
near Arino (Teruel, Aragon, Spain); found and managed in a joint collaboration between a mining company and a palaeontological park.
The Bairds concentrated on Carboniferous formations but made their most significant discovery in rocks regarded as Lower Permian: a bonebed
in the Nineveh Limestone at Clark Hill in Monroe County, Ohio (Berman 1978).
Data from this mega bonebed
provide pretty clear evidence that these and other dinosaurs were routinely wiped out by catastrophic tropical storms that flooded what was once a coastal lowland here in Alberta, 76 million years ago," the Globe and Mail quoted David Eberth, a senior research scientist at the museum, the lead author on the study and one of the book's three editors, as saying.
The books draw on research conducted over two decades, made possible because of the discovery of a densely packed bonebed
near Grande Prairie, Alberta, Canada, which yielded a new species of horned dinosaur, the ceratopsian.
Kentriodon obscurus (Kellogg, 1931), a fossil dolphin (Mammalia: Kentriodontidae) from the Miocene Sharktooth Hill Bonebed
The new dinosaur was discovered in a bonebed
on private land located along the Milk River in North Central Montana.
In agreement with Currie and Eberth (2010), evidence for gregariousness in all the extinct taxa comes from five broad sources: (1) skeletal morphology, (2) bonebed
assemblages, (3) tracksites, (4) phylogenetic inference, and (5) comparison with modern ecosystems.
Washington, June 9 (ANI): A new study has solved a century-old enigma of the origin of a prehistoric marine massive bonebed
in southern California, US.