Aspects of hadrosaurian cranial anatomy
Version of Record online: 9 OCT 2007
Volume 12, Issue 3, pages 265–273, July 1979
How to Cite
MARYAŃKA, T. and OSMÓLSKA, H. (1979), Aspects of hadrosaurian cranial anatomy. Lethaia, 12: 265–273. doi: 10.1111/j.1502-3931.1979.tb01006.x
- Issue online: 9 OCT 2007
- Version of Record online: 9 OCT 2007
Supraorbital bones in Saurolophus angustirostris are described, and their presence in all hadrosaurs is suggested. Frontal-nasal and premaxillar-nasal fontanellae are distinguished in hadrosaurs; their presence is explained as connected with growth and considered to he responsible for the variability of crest structures. New data indicating the presence of a cartilaginous diverticulum nasi within the circumnarial depression in Saurobphus ongustirostris are presented. A physiological (respiratory and/or thermoregulatory) function of the nasal diverticulum is proposed.