The overpass comprises a group of double- arched unit main beams; after being respectively assembly welded by upper chord beams and lower chord beams, the main beams form a turtle shell type steel structure, wherein, the upper chord beams which are integrated into a whole form an arch bridge...
Changing climates in the past affected both human and faunal population distributions, thereby structuring human diets, demography, and cultural evolution. Yet, separating the effects of climate-driven and human-induced changes in prey species abundances remains challenging, particularly during the Late U...
Ankylosaurs were herbivorous quadrupedal dinosaurs characterized by heavily ornamented skulls and transverse rows of osteoderms that covered the dorsolateral surfaces of their bodies1. Abundant remains of ankylosaurs have been found in Mongolia, and a total of nine taxa are currently known (Table1)....
Changing climates in the past affected both human and faunal population distributions, thereby structuring human diets, demography, and cultural evolution. Yet, separating the effects of climate-driven and human-induced changes in prey species abundances remains challenging, particularly during the Late U...
A new species of soft-shell turtle from the Upper Cretaceous sediments of MongoliaChkhikvadze, V MShuvalov, V F
Examination of shell histology also indicates that was terrestrial: thick inner cortex, poorly vascularized external cortex and short trabeculae in the cancealous bone layer. Further, the proportion of individual fossil finds organized by the families studied varied among the Fruitland, lower Kirtland,...
The present study characterizes the morphological variability related to the sexual dimorphism in the shells of the Spanish Upper Cretaceous turtle Dortoka vasconica. This study is based on the material from its type locality: Lao, Burgos. Two morphotypes were identified there based...
Kizylkumemys schultzi and other pan-carettochelyids share prominent shell sculpture with all other pan-trionychians; shell sculpture of large pits and grooves and network of vertical and subvertical canals in the external cortex, with nanhsiungchelyids and pan-trionychids; reduced or absent s...