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At left: mosasaur flipper bone fresh out of a jacket. At right: flipper bone after some airscribe TLC.
Rear flipper-bone, fully encrusted with gypsum.
Same rear flipper-bone, half cleaned. This is all microscope-work to see up-close where the gypsum meets the bone.
Surprise! Look what was under the gypsum - bite marks! We know a lot of carcasses have been scavenged, but it’s always cool to see the evidence.
