pteraspis is an extinct genus of jawless ocean fish that lived in the devonian period, seen here with a group of chelmon butterflyfish. - 動物家族 幅插畫檔、美工圖案、卡通及圖標
illustration of an apatosaurus rearing up on its hind legs confronting a theropod dinosaur, to protect its young, jurassic period - 動物家族 幅插畫檔、美工圖案、卡通及圖標
