引用元: 【悲報】イッカクの角、角じゃなかった 1: 風吹けば名無し 2021/08/16(月) 19:45:07.71 ID:CW5lL3PC0 あれ実は歯やねんて▼関連 Happy #FossilFriday! Meet Monodon monoceros, an extant member of the order Cetacea. You might know it by another name... the narwhal! It\'s sometimes called a sea unicorn because of its enormous tusk—actually an elongated canine tooth that can grow to be nearly 10 ft (3 m) long. pic.twitter.com/645Pb61i3J— American Museum of Natural History (@AMNH) December 13, 2019 #FunFact: The scientific name for narwhals, Monodon Monoceros, means “one tooth, one horn.” Learn more: pic.twitter.com/IYFY983KgU— Oceana (@oceana) November 17, 2019 ▼関連いらすと…
