1. Volume 22, Issue 24, Pages R1032-R1033 (December 2012)
The baculum 
Paula Stockley 
Current Biology 
Volume 22, Issue 24, Pages R1032-R1033 (December 2012)
DOI: /j.cub
Copyright © 2012 Elsevier Ltd Terms and Conditions

2. Figure 1 Diversity of bacula.
Examples of bacula of North American mammals. Top left: bacula of ground squirrels (Spermophilus sp.) with spoon-shaped distal ends and tooth-like projections. Top right: trident shaped bacula of rice rats (Oryzomys sp.) and voles (Microtus sp.); illustrations demonstrate complexity of bacula shape from different perspectives. Bottom: relatively simple bacula of some large carnivores (two bear species (Ursus) illustrated above a sea lion (Zalophus)). Illustrated by William L. Brudon, reproduced with permission from Burt (1960).
Current Biology  , R1032-R1033DOI: ( /j.cub )
Copyright © 2012 Elsevier Ltd Terms and Conditions