Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(A and B) Rectangular (T. proriger AMNH FARB 4909). (C and D) U-shaped (T. proriger FHSM VP-3). (E and F) M-shaped (T. proriger FMNH P15144). The photograph of AMNH FARB 4909 has been inverted to face left; specimen photographs are not to scale.
