Paleontologists are sifting through the soil of an excavated lot in search of ancient plants, the only ones from the early Jurassic period found so far in western North America.
... of land plants in Europe at the boundary of the Triassic and Jurassic periods, 200 million years ago, ... titled 'Floral changes across the Triassic/Jurassic boundary linked to flood basalt volcanism.'... ...
... new geochemical analysis of rare ancient soils. The geochemical analysis provides new data for the Jurassic period, when very little is known about Central Africa's paleoclimate, says Timothy S. Myers ...
... about 166 million years ago, in the late Jurassic period -- a fact corroborated indirectly in the newly ... immature young in external pouches for extended periods of time. Eutherian mammals like mice ...
An excavation revealed at least four plant-eating dinosaurs and two carnivorous ones that date to the late Jurassic period, state officials announced.
... Earth.
Sidor noted that in the early Triassic period, from about 245 million to 251 million years ... half the species were the same, he said, and in the early Jurassic period, around 190 million years ...
... rare dinosaur tail-drag marks – provides more evidence there were wet intervals during the Early Jurassic Period, when the U.S. Southwest was covered with a field of sand dunes larger than the Sahara ...
... midst of that transition."
Heterodontosaurus lived during the Early Jurassic period (about 190 million years ago) of South Africa. Adult Heterodontosaurs were turkey-sized animals, ...
About 190 million years ago, during the Early Jurassic Period, a vast desert larger than the Sahara covered much of what is now Utah, Wyoming, Colorado, New Mexico, ...
... say, demonstrates that theropod, or bird-footed, dinosaurs were more ecologically diverse in the Jurassic period than previously thought, and offers important evidence about how the three-fingered ...
... extinction," says McElwain.
The time interval under study, at the boundary of the Triassic and Jurassic periods, has long been known for its plant and animal extinctions.
Until this research, the ...
... record for study. By analyzing a global database of bivalve fossils stretching from the Jurassic Period to the present, the researchers noted when each genus disappeared and whether their relatives ...
... tracksite in Lesotho contains more than 250 footprints made by a variety of four-legged animals near the beginning of the Jurassic Period (about 200 million years ago), when the Earth ...
... of Archaeopteryx (from the Greek for "ancient wing"), which lived 150 million years ago during the Late Jurassic period in what is now Germany. Instead, the animal has been ...
The creature, Fruitadens haagarorum, weighed less than 2 pounds and
lived among the giants of the Jurassic period. Unearthed in
Colorado, the remains are on display at the L.A. Natural History
Museum. ...
