Our report of original cutaneous spikes over integument of an iguanodontian from China (Yxian, Barremian) in @natecoevo.nature.com 🐉🦔 !
@naturalsciences-be.bsky.social @cnrs.fr @rennesuniv.bsky.social @oseren.bsky.social and Anhui Geological Museum.
#paleontology #ornithopod #fossilskin #jeholbiota
The left one looks like Sinopterus to me (among the limited number of pterosaurs I can recall, that’s the closest). No intuition for the other.
Would love to hear from experts like @markwitton.bsky.social, @tetzoo.bsky.social and @davehone.bsky.social…
#pterosaur #JeholBiota
New research finds that an exceptionally preserved pterosaur fossil from northeast China had a belly full of plants. The “once-in-a-hundred-years” discovery is the first of its kind, settling a longstanding debate among paleontologists.
#paleontology #jeholbiota #atavismus
New at @science.org 🏺🧪
Jeholosaurus shangyuanensis (IVPP V12530) posted to Wikimedia Commons
Psittacosaurus specimen on display at the Nanjing Paleontology Museum. Public Domain image
Completing our picture of the #JeholBiota are the small ornithischians. Early ceratopsids like #Psittacosaurus are well represented in these fossil beds. The juvenile ankylosaur Liaoningosaurus (warranting its own deep dive) & small bipedal herbivores like #Jeholosaurus roamed the ancient Jehol too
A cast of Yutyrannus on display in New York. Picture taken by an unknown source. Shared online at https://prehistoricbeastoftheweek.blogspot.com/2016/04/yutyrannus-beast-of-week.html
Microraptor wasn't the only feathered dinosaur from the #JeholBiota. The tyrannosaurs #Yutyrannus (likely) and Dilong also hail from these rocks. Yutyrannus is currently the largest dinosaur known with a body covered in feathers. These predators are known to reach at least 9m long. (13/_)
Fossil specimen of Archaefructus on display at the Geological Museum of China - posted to Wikimedia Commons by Jonathan Chen
The Jehol #flora included some of the first known flowering plants (like Archaefructus, pictured below) and their pollen. Other low-lying plants like ferns & horsetails are also represented in #JeholBiota deposits. Towering above the rest stood extinct relatives of modern conifers and ginkgos. (5/_)
Note: Some of the Jehol Biota may also occur in the Korean Peninsula and further West towards Mongolia, but the best documented locations are all in NE China
The #JeholBiota as defined by Pan et al (2013) spans ~10 million years of the Early Cretaceous (~130-120mya). Comprising of the #Yixian, #Jiufotang, and #Huajiying formations, the Jehol Biota is often spectacularly preserved on account of shallow water & volcanic ash preservation...
Scientists in Northeast China have discovered two new feathered dinosaur species from the Jehol Biota, a fossil-rich area that dates back 125 million years.
#dinosaurs #paleontology #China #evolution #prehistoriclife #JeholBiota #Huadanosaurus #Sinosauropteryx #fossils #science
