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. Author manuscript; available in PMC: 2016 May 5.
Published in final edited form as: Cell Rep. 2015 Apr 23;11(5):673–680. doi: 10.1016/j.celrep.2015.03.064

Figure 1. Extant rodent molar crown phenotypes.

Figure 1

(A) Brachydont phenotype is characterized by a crown/root proportion (crp) of 0.3–0.9. (B) Mesodont phenotype is characterized by crp of 0.9–1.5. (C) Hypsodont phenotype is characterized by crp of >1.5. (D) Hypselodont phenotype is characterized by continuous growth, as roots are replaced by active stem cell niches. Cr-crown; Rtroot; Cl-cervical loop. Scale line = 1mm.