A MISMATCHED PAIR

The two ammonites, which are so different, are actually male and female.

The small male has such an extremely protruding mouth that it is difficult to imagine how the tentacles could have fitted through the narrow crevices of the opening. Or did the animal only have thin, thread-like tentacles?

The living chamber and the mouth of the larger female, on the other hand, is spacious and leaves enough room for the large number of eggs typical of ammonites.