Mamenchisaurus! @fukui_dinosaur has this Mamenchisaurus, a Brachiosaurus, a Camarasaurus (original bone!), Bellusaurus, plus a number of sauropod skulls and the apatosaurine baby dubbed “Tony” (which isn’t a brach :-)). #Mamenchisaurus is an ultra-long-necked #sauropod #dinosaur lived in the Late #Jurassic and Early #Cretaceous of China. The neck in some specimens may have been half the length of the body, a record among #sauropods. Most sauropods have 25 presacral vertebrae, with primitive ones