Potamogeton Remains from the Lower Cretaceous ? Lycoptera Beds of Jehol

Non-Avian dinosaur fossils from the Lower Cretaceous Jehol Group of western Liaoning, China

Over the past 10 years, numerous dinosaur specimens covering several major dinosaurian clades have been recovered from the Lower Cretaceous Jehol Group of western Liaoning. Among ornithischians from the Jehol Group, ornithopod fossils shed new light on the evolution of this largest ornithischian group; ankylosaurian discoveries add morphological diversity relevant to the highly specialized anky...

Anurans from the Lower Cretaceous Jehol Group of Western Liaoning, China

BACKGROUND To date, the Lower Cretaceous Jehol Group of western Liaoning, China has yielded five monotypic genera of anurans, including Liaobatrachus grabaui, Callobatrachus sanyanensis, Mesophryne beipiaoensis, Dalianbatrachus mengi, and Yizhoubatrachus macilentus. However, the validity and distinctness of these taxa have been questioned. METHODOLOGY/PRINCIPAL FINDING We provide a comprehens...

An Unusual New Neosauropod Dinosaur from the Lower Cretaceous Hastings Beds Group of East Sussex, England

Xenoposeidon proneneukos gen. et sp. nov. is a neosauropod represented by BMNH R2095, a well-preserved partial mid-to-posterior dorsal vertebra from the Berriasian– Valanginian Hastings Beds Group of Ecclesbourne Glen, East Sussex, England. It was briefly described by Lydekker in 1893, but it has subsequently been overlooked. This specimen’s concave cotyle, large lateral pneumatic fossae, compl...

Microbiostratigraphy of the Lower Cretaceous strata from South East of Maragheh, NW Iran

For the microbiostratigraphical studies, a stratigraphical section (named Dareh-Goshayesh) has been selected in southeast of Maragheh, Northwestern Iran. The thickness of successions in the selected stratigraphic section is measured about 223.6 m. The mentioned studied stratigraphic section is composed of two clastic and carbonate units. This succession unconformably overlies the Lar Formation ...

Astrochronology for the Early Cretaceous Jehol Biota in northeastern China