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Partial Ammonite Body Chamber

Jeffrey P

Trachyscaphites pulcherrimus

Partial Male Ammonite Body Chamber

Upper Cretaceous

Wenonah Formation

Mattawan Group

Big Brook

Marlboro, N.J.




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Photo Information for Partial Ammonite Body Chamber

Taken with Apple iPad mini 2

  • 3.3 mm
  • 1/24
  • f f/2.4
  • ISO 64
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54 minutes ago, The Jersey Devil said:

@Jeffrey P


How do you tell if it's male or female?

I showed it to Ralph Johnson who explained the defining characteristics that determine gender in this species. I seem to recall that the body chamber is more robust, but there was one or two other characteristics I can't recall. He told me that females are very rare- maybe one in ten or less. 

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