Photos show the typical entombing poses of the Jehol terrestrial vertebrate fossils (a, Psittacosaurus; b-c, Confuciusornis). This boxer-like pose is typical of victims of pyroclastic density currents, resulting from postmortem tendons and muscles shortening.
Charcoalified soft tissues
Backscattered SEM images show charcoalified soft tissues (dark materials) on the Jehol terrestrial vertebrate skeletal fossils (a-b, Psittacosaurus; c-d, Confuciusornis).
Photomicrographs of thin-sections show asymmetric, wavy abrasive pits, missing bone material (arrows) and cracks at both upper and lower bone edges, and decreasing modification of bone microstructures of two Jehol terrestrial vertebrate skeletal fossils (a, Psittacosaurus; b, Confuciusornis).
Studied materials and analyzed positions. CT scan images (a, b) and photographs (c–f) of the studied materials containing fragmental skeletons show positions of polished cross-sections and thin-sections and areas of SEM analyses.
Photomicrographs of specimens
Photomicrographs of the specimens from the Sihetun area.
Photographs and photomicrographs
Photographs and photomicrographs of the specimen V12414.
Photomicrographs of the specimen V12556.
Photomicrographs of the specimen V12644.
Photomicrographs of the specimen V16709.
Sediment composition. Backscattered, environmental SEM images show blocky vitric shards with adhering dust (arrows) setting in a matrix of moss-like masses of angular and irregular vitric chips in the embedding sediments.
Charcoalified plant debris
Photographs of charcoalified plant debris. Charcoalified plant debris (arrows) from the vertebrate-bearing laminae in the Sihetun area. Rulers in (a, c–f) are in cm; the coin in (b) is 1.8 cm.