Fig. 6.

Maternal histology of the left femur, LACM 129639. (A) depicts outer cortex comprising secondary Haversian bone except for some primary woven bone near the periphery, and the External Fundamental System, magnified in (B). (C) shows secondary mid-cortical osteons, while (D) shows secondary lamellar bone from the medullary region. (E) shows the top half of the slide preparation and locations of sections A and C. Section D is from the fragmentary deep part of the core, in the cancellous trabecular region. EFS, external fundamental system; er, erosion room; gl, growth line; lb, lamellar bone; wb, woven bone.