Johnson (1990) presented a new mount of Torosaurus with semierect forelimbs. This is not
in accord with the best available evidence. A Maastrichtian trackway assignable to …

Ceratopsid dinosaurs traditionally have been restored with sprawling forelimbs and were
considered unable to run at high speeds. An alternative view restores the ceratopsids as …

Analyses of non-avian dinosaur locomotion have been hampered by the lack of an
appropriate locomotor analog among extant taxa. Birds, though members of the clade …

The coincidence in time of incipient rifting of Pangea and the origin of dinosaurs during the
Carnian age (230-225 Ma) of the Late Triassic suggests a fundamental link between the two …

T he reconstructed foot of Plateosaurus, a Late Triassic prosauropod dinosaur, provides new
insights into its morphology and function. Pes digit I is notably shorter than digits II through IV …

Four or five anterior caudal vertebrae of archaic horned dinosaurs (Protoceratopidae) have
the heterocelous centrum. The cranial and caudal articular surfaces of these centra are …

ABSTRACT A new species, Camptosaurus aphanoecetes, is named for a partial skeleton of
ornithopod dinosaur from the Morrison Formation (Upper Jurassic) of Dinosaur National …

Background The most primitive ornithischian dinosaurs were small bipeds, but
quadrupedality evolved three times independently in the clade. The transition to …

Comparisons of hadrosaurs with undoubtedly quadrupedal dinosaurs and graviportal
mammals show that hadrosaurs were bipedal. Arguments used to show that hadrosaurs …

PAUL, Gregory, Baltimore, MD Computer simulated posture of sauropod necks including
camarasaurs is consistently horizontal. The minimal spacing between centra in these …