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. 2016 Apr 25;229(2):252–285. doi: 10.1111/joa.12471

Figure 7.

Figure 7

Paleohistological cross‐sections in the parietal‐postorbital sutures of a fossil crocodilian (cf Brachychampsa). (A) Whole cross‐section of the parietal‐postorbital bones of MOR 552. The ectocranial and endocranial parts of the parietal‐postorbital sutures are indicated by the red arrows. (B) Close‐up of the left red box in (A). (C) Close‐up of the red box in (B). The sutural borders are composed of bone lamellae that are all parallel to the suture. (D) Close‐up of the red box in (B) shown under polarized light. Polarized light indicates that this tissue is woven. (E) Close‐up of the right red box in (A), showing lamellar‐zonal bone. The white arrows indicate lines of arrested growth. Pa, parietal; Po, postorbital.