suborder heterostraci   (TTS Sound)

The suborder_heterostraci has 1 Senses.

• suborder heterostraci, heterostraci
• extinct group of armored jawless fishes or fish-like vertebrate; taxonomy is not clear
• 甲冑で無顎魚類、もしくは、魚のような脊椎動物の絶滅した種類