In 1993, a nearly complete postranial skeleton of Apatosaurus was recovered from the Morrison Formation (Upper Jurassic: Kimmeridgian - Tithonian) near Thermopolis, Wyoming (USA).
Introduces the class of dinosaurs known as long-necked herbivores, describing the time period in which they lived, their various types, and the physical characteristics of each type, including such examples as Amargasaurus, Europasaurus, ...
Presents a timeline of the history of dinosaurs.
... Diplodocidae and apparently also the Titanosauridae . Second , there are the divided versus the undivided neural spines , the former comprising the Diplodocidae and Camarasauri- dae . Third , there are the normal versus the forked mid ...
... Diplodocidae ) : bifid cervical neural spines . Node 3 ( Diplodocidae ) : nares retracted , 15 cervical vertebrae . Node 4 ( Rebbachisauridae ) : low - angle , internal wear facet , increase in tooth number , asymmetrical enamel ...
... Diplodocidae Apatosaurus louisae Barosaurus lentus Diplodocus longus Diplodocus carnegiei Diplodocus sp. ?Diplodocidae indet. Brachiosauridae Brachiosaurus cf. altithorax Camarasauromorpha Camarasaurus lentus (including C. annae, C ...
... Diplodocidae Camarasaurus Brachiosaurus DIPLODOCOIDEA MACRONARIA Dystrophaeus ? NEOSAUROPODA EUSAUROPODA formations. I've seen such stringers of cobbles in mudstones in lower levels of the Lakota Formation in the Black Hills and of the ...
... Diplodocidae listed by McIntosh ( 1990 , p . 388 ) is that the distal ends of the ischia are expanded . The distal end of the ischium of Seismosaurus is peculiarly hooked ( Fig . 6D ; Gillette , 1991 , fig . 3A- B ) and is not expanded ...
... Diplodocidae were recovered as closely related monophyletic groups in successive phylogenies. In that pioneering work of sauropod phylogeny, Upchurch linked both Diplodocidae and Dicraeosauridae in a more inclusive group (the ...
The Upper Jurassic Morrison Formation of the western United States preserves one of the best-known Mesozoic paleoecosystems worldwide.