Marks on Whale Bone

[Pleuromya]

Hello,

These bone fragments are from the Red Crag formation, found at Bawdsey and Ramsholt in Suffolk. The bones are likely from Balaena affinis which are the most commonly found bones from the Red Crag formation. I was wondering what these marks could be on them? 

 

This first one has several circular depressions and two depressions in the shape parallel lines on its surface. 

 

 

 

This piece has several circular depressions.

 

 

 

Lastly, this piece has two depressions with a slightly shiny surface, somewhat similar to those on the first piece. Hopefully the photos show these well. There's also larger holes, I was wondering if these could have been caused by boring bivalves? There were a lot of these which had bored into the London Clay on the foreshore. 

 

 

 

 

Thank you. 

 

Edited August 15, 2022 by Pleuromya