The oldest ‘Megapodagrionidae’ (Odonata, Zygoptera) discovered in the Lower Cretaceous Yixian Formation, China
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DOI: 10.1016/j.cretres.2017.12.003
Abstract: Abstract Cretapodagrion sibelleae gen. et sp. nov., oldest representative and first Mesozoic ‘Megapodagrionidae’, is described on the basis of a complete wing from the Lower Cretaceous of Yixian Formation (ca. 124.6 Ma) in China. It shows… read more here.
Keywords: megapodagrionidae; cretaceous yixian; lower cretaceous; yixian formation ... See more keywords
New chronostratigraphic constraints on the Yixian Formation with implications for the Jehol Biota
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DOI: 10.1016/j.palaeo.2017.09.026
Abstract: Abstract The fossils of the Cretaceous Jehol Biota exhibit excellent preservation and extraordinary diversity. Terrestrial fossils, including plants, insects, dinosaurs, birds, mammals and freshwater invertebrates have been discovered from the Dabeigou, Yixian and Jiufotang Formations… read more here.
Keywords: unit; lujiatun unit; age; yixian formation ... See more keywords
High-precision geochronological constraints on the duration of ‘Dinosaur Pompeii’ and the Yixian Formation
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DOI: 10.1093/nsr/nwab063
Abstract: SUMMARY High-precision U-Pb zircon ages of 125.755 ± 0.061 Ma and 124.122 ± 0.048 Ma, respectively, represent the onset and termination of Yixian Formation in the Jin-Yang basin, bracketing its duration to 1.633 ± 0.078… read more here.
Keywords: yixian formation; high precision; duration; precision geochronological ... See more keywords
A Flower Bud from the Lower Cretaceous of China
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DOI: 10.3390/biology11111598
Abstract: Simple Summary Flowers are beautiful due to their perianth which is frequently colourful and conspicuous. The existence of the colourful perianth is closely related to insect pollination in extant angiosperms. The Early Cretaceous (1.25 million… read more here.
Keywords: yixian formation; flower bud; lower cretaceous; early angiosperms ... See more keywords
New Pamphiliids with Varying Venations from Lower Cretaceous Yixian Formation of Northeast China (Hymenoptera, Pamphiliidae)
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DOI: 10.3390/insects13100947
Abstract: Simple Summary The presence of various morphologies of the ap-Cu, an extra vein with different lengths in the forewing, is a special character in Pamphiliidae. In Juralydinae, this vein is usually absent or extremely short.… read more here.
Keywords: pamphiliidae; yixian formation; china; lower cretaceous ... See more keywords
Cranial morphology of Sinovenator changii (Theropoda: Troodontidae) on the new material from the Yixian Formation of western Liaoning, China
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DOI: 10.7717/peerj.4977
Abstract: A new three-dimensionally preserved troodontid specimen consisting of most of the skull, partial mandibles and six articulated cervical vertebrae (PMOL-AD00102) from the Early Cretaceous Yixian Formation of Beipiao, western Liaoning, China is identified as Sinovenator… read more here.
Keywords: sinovenator changii; liaoning china; yixian formation; sinovenator ... See more keywords