Image: Hadrosauroid tooth primary ridges

Description: Comparison of the primary ridges of the tooth crowns in the dentary dental batteries of some hadrosauroid species (all dental batteries in lingual view). (A) Equijubus normani (IVPP V12534). (B) Probactrosaurus gobiensis (PIN 2232/42-1). (C) Bactrosaurus johnsoni (AMNH 6553). (D) Parasaurolophus tubicen (NMMNH P-25100). (E) Edmontosaurus regalis (CMN 2289). (F) Brachylophosaurus canadensis (CMN 8893).
Title: Hadrosauroid tooth primary ridges
Credit: Image file from Xing H, Wang D, Han F, Sullivan C, Ma Q, He Y, Hone D, Yan R, Du F, Xu X (2014). "A New Basal Hadrosauroid Dinosaur (Dinosauria: Ornithopoda) with Transitional Features from the Late Cretaceous of Henan Province, China". PLOS ONE. DOI:10.1371/journal.pone.0098821. PMID 24901454. PMC: 4047018.
Author: Xing H, Wang D, Han F, Sullivan C, Ma Q, He Y, Hone D, Yan R, Du F, Xu X
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