Hi!
Got this little crab from a Catalan site dated Ilerdian (regional chronostratigrphic stage in the Southern Pyrenees, which would, as far as I know, correspond to the lower part of the global Ypresian stage) . Unfortunately, the specimen is badly eroded, in matrix, and the rim of one side of the caparace seems to be missing. Cleaning it with a needle (an actual sewing needle, I mean) has been hard and long. My knowledge of crab morphology is rather limited, so I've done my best with the pics to try to show what could be relevant for ID. If some other pics will be needed, do not hesitate to say so. Any ideas or comments will be welcome. Thanks in advance.