菱鯡屬(學名:Rhombichthys)是一種已滅絕的鯡魚,存在於上白堊紀時期的約旦河西岸。[1]
菱鯡的成年體有一個非常深的、被盾覆蓋的腹部。腹部與高高的三角形背鰭相結合,使魚的身體輪廓呈菱形,因此得名。相比之下,幼魚的腹部要淺得多,輪廓呈圓形。
參考資料
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