Extinct Marine Arthropod With a Flat Oval Body
This page is the CodyCross answer for the clue below from Train Travel, Group 702, Puzzle 1 (Morning Rush Hour).
Question is: Extinct Marine Arthropod With a Flat Oval Body
and the answer is: TRILOBITE
Word Meaning:
TRILOBITE — An extinct arthropod of the class Trilobita, whose body had three large lobes.
Definitions from Wiktionary.