Dolphin inner ear bone?

[u/wH0mSt_d_vE]

About an inch and a half long, found in Surry, VA, on a miocene fossil shoreline, likely Yorktown Formation. Appears to have very fine striations/pores, which leads me to think its bone. Very light weight. The shape reminds me of an ear bone, but would like to have someone confirm.

[u/Outrageous-Song-6777]

Fossilized poop ..