Varves in the Yixian Formation, western Liaoning: Constraining the palaeoclimate in the Early Cretaceous

2021 ◽  
Author(s):  
Tiehui Wang ◽  
Enpu Gong ◽  
Yue Liang ◽  
Ying Cui ◽  
Wentao Huang
Keyword(s):  
Early Cretaceous ◽  
Yixian Formation ◽  
Western Liaoning

New Material of Zhenyuanopterus (Pterosauria) from the Early Cretaceous Yixian Formation of Western Liaoning

2014 ◽  
Vol 88 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Fangfang TENG ◽  
Junchang LÜ ◽  
Xuefang WEI ◽  
Yufu HSIAO ◽  
Michael PITTMAN
Keyword(s):  
Early Cretaceous ◽  
Yixian Formation ◽  
Western Liaoning ◽  
New Material

A new eucryptodiran turtle from the Early Cretaceous Jiufotang Formation of western Liaoning, China

Zootaxa ◽  
2010 ◽  
Vol 2676 (1) ◽  
pp. 45 ◽  
Author(s):  
CHANG-FU ZHOU
Keyword(s):  
Early Cretaceous ◽  
Cladistic Analysis ◽  
Yixian Formation ◽  
Liaoning Province ◽  
Jehol Biota ◽  
Western Liaoning ◽  
The Third

A new eucryptodiran turtle from the Jiufotang Formation of Lamadong, Jianchang County, represents the third turtle taxon, Liaochelys jianchangensis gen. et sp. nov., from the Jehol Biota of western Liaoning Province, China. This taxon is diagnosed by a character combination including a midline contact of the prefrontals, vertebrals wider than long, third costals strongly expanded distally, and a medial contact of the eighth costals. A preliminary cladistic analysis places Liaochelys jianchangensis along the phylogenetic stem of Cryptodira in a position more derived than the taxa, Manchurochelys manchoukuoensis and Ordosemys liaoxiensis, known from the underlying Yixian Formation. This discovery opens a new window into the osteology and evolution of primitive eucryptodiran turtles.

Microbial–caddisfly bioherms in the Early Cretaceous Yixian Formation in the Yixian Basin, Western Liaoning, China

2017 ◽  
Vol 78 ◽  
pp. 127-138 ◽  
Author(s):  
Enpu Gong ◽  
Jiang Xu ◽  
Tiehui Wang ◽  
Yue Liang ◽  
Fei Gao
Keyword(s):  
Early Cretaceous ◽  
Yixian Formation ◽  
Western Liaoning

A new genus and two new species of fossil Elaterids from the Yixian Formation of Western Liaoning, China (Coleoptera: Elateridae)

Zootaxa ◽  
2008 ◽  
Vol 1785 (1) ◽  
pp. 54 ◽  
Author(s):  
HUALI CHANG ◽  
FAN ZHANG ◽  
DONG REN
Keyword(s):  
New Species ◽  
Early Cretaceous ◽  
Late Jurassic ◽  
New Genus ◽  
Upper Jurassic ◽  
Yixian Formation ◽  
Western Liaoning ◽  
Two New Species

A new genus and two new species of fossil Elateridae are described and illustrated: Paralithomerus gen. nov., P. exquisitus sp. nov, and P. parallelus sp. nov. Both species were collected from the Late Jurassic-Early Cretaceous Yixian Formation of western Liaoning, China. Fossil elaterids expressing a sutured mesoventrite have been otherwise discovered only from the Upper Jurassic strata of Karatau.

A second specimen of Manchurochelys manchoukuoensis Endo & Shikama, 1942 (Testudines: Eucryptodira) from the Early Cretaceous Yixian Formation of western Liaoning, China

Zootaxa ◽  
2010 ◽  
Vol 2534 (1) ◽  
pp. 57 ◽  
Author(s):  
CHANG-FU ZHOU
Keyword(s):  
World War Ii ◽  
Early Cretaceous ◽  
Cladistic Analysis ◽  
Yixian Formation ◽  
Liaoning Province ◽  
Cranial Morphology ◽  
Jehol Biota ◽  
Western Liaoning ◽  
Additional Information ◽  
Close Relationship

Within the Early Cretaceous Jehol Biota of China, the turtle Manchurochelys manchoukuoensis Endo & Shikama, 1942 was one of the first discovered tetrapod fossils, but no additional information on this enigmatic taxon has become available during the past half century since its discovery. Here, a new turtle skeleton from the Yixian Formation of western Liaoning Province is identified as referable to M. manchoukuoensis on the basis of an elongate oval shell, long and narrow second to fourth vertebral scutes, and two suprapygals, of which the second is much larger than the first. This specimen therefore represents the second specimen of M. manchoukuoensis, the holotype of which was probably lost during World War II. This discovery not only provides essential material that allows the validity of M. manchoukuoensis to be tested, but also substantially expands understanding of its bony anatomy, especially with regard to cranial morphology. Among other features, M. manchoukuoensis is characterized by a postorbital that does not contact the quadrate/squamosal and a deep temporal emargination, which support a close relationship with Sinemys spp. and distinguish it from the co-existing Ordosemys liaoxiensis. A cladistic analysis that includes M. manchoukuoensis further supports the hypothesis that Sinemydidae is a monophyletic group that includes Sinemys spp. and Dracochelys bicuspis.

A new ctenochasmatoid pterosaur from the Early Cretaceous Yixian Formation of western Liaoning, China

2012 ◽  
Vol 34 ◽  
pp. 26-30 ◽  
Author(s):  
Junchang Lü ◽  
Qiang Ji ◽  
Xuefang Wei ◽  
Yongqing Liu
Keyword(s):  
Early Cretaceous ◽  
Yixian Formation ◽  
Western Liaoning

scholarly journals Variability of Habroblattula drepanoides gen. et. sp. nov. (Insecta: Blattaria: Blattulidae) from the Yixian Formation in Liaoning, China

Zootaxa ◽  
2007 ◽  
Vol 1443 (1) ◽  
pp. 17-27 ◽  
Author(s):  
TIAN-TIAN WANG ◽  
JUN-HUI LIANG ◽  
DONG REN
Keyword(s):  
Early Cretaceous ◽  
Coefficient Of Variation ◽  
Late Jurassic ◽  
Yixian Formation ◽  
Wing Venation ◽  
Western Liaoning ◽  
Left And Right ◽  
The Asymmetry

Habroblattula drepanoides gen. et sp. nov. (Blattulidae) is described from the Late Jurassic or Early Cretaceous sediments of the Yixian Formation in Western Liaoning, China. Wing venation of Habroblattula drepanoides reveals low coefficient of variation (CV) for total number of the forewing veins (CV=5.72) which indicates active flight capability. The higher hindwing variability (CV=14.43) might suggest Habroblattula was an advanced genus, may be caused by the regulation of the vein. The asymmetry between the left and right forewing in the same individual indicates the flight was limited when comparing with the CV of the left and right forewings.

Sign in / Sign up

Export Citation Format

Share Document