[D] Hypacrosaurus altispinus [Su] [T]
Cretaceous Late Maastrichtian
Ornithischia Ornithopoda Hadrosauridae Lambeosaurinae
Horseshoe Canyon Formation, Alberta, Canada
Typespecies - Skull
Hypacrosaurus (Brown, 1913) > Hypacrosaurus altispinus (Brown, 1913) > Cheneosaurus tolmanensis (Lambe, 1917) > Hypacrosaurus stebingeri (Horner & Currie, 1994)
5 - 10 articulated skulls, some associated with postcrania, isolated skull elements, Juvenile to adult.
\\\\\\\"near-topmost lizard\\\\\\\" The neural spines of Hypacrosaurus altispinus are tall, but not exceptionally so for lambeosaurids--although they seemed very tall when the Hypacrosaurus altispinus was originally described, back in 1913.
Kundrat and Currie (2001), in an abstract reported on numerous embryonic cranial bones belonging to the Hypacrosaurus stebingeri from the Devil\\\\\\\'s Coulee area in southern Alberta, Canada