megalodon

Learned borrowing from taxonomic name megalodon, from Ancient Greek μεγάλος (megálos, “big”) +‎ ὀδών (odṓn, “tooth”). By surface analysis, megalo- +‎ -odon.

megalodon (plural megalodons)

1. A species of extinct shark that lived during the Miocene and Pliocene epochs (†Otodus megalodon).
   • 2018, Tim Flannery, Europe: A Natural History, page 139:

     Throughout the period, toothy giants persisted in the oceans. Perhaps the most spectacular was the megalodon shark.

• megatooth

• moonglade