Bishop Bell's Behemoth, Or The Paleontological Prelate

Perhaps we could better guess the 'what' if we know a little more about the 'why', i. e., what is the rest of the context of this engraving? What does the inscription say? What is known about Bell's family and/or professional icons? What were the typical funerary adornments at this place and time? Maybe this is just a very poorly executed rendition of a fairly common and obvious graphic.