這種(zhong)(zhong)鯊魚體長(chang)11米重8噸,性(xing)情兇(xiong)猛,以鯨(jing)為食(shi),是(shi)(shi)漸(jian)(jian)新(xin)世初(chu)的(de)霸主。龍王(wang)鯨(jing)於3600萬年前絕種(zhong)(zhong)后(hou),沒有任何生(sheng)物與其競爭食(shi)物。漸(jian)(jian)新(xin)世時(shi)期己(ji)現了須鯨(jing)祖先(xian)及齒鯨(jing)祖先(xian),但個(ge)體都很小受安格思(si)迪鯊威脅(xie),是(shi)(shi)漸(jian)(jian)新(xin)世的(de)海洋霸王(wang)。
牙(ya)(ya)(ya)齒大而(er)鋒(feng)利,呈(cheng)三(san)角(jiao)形,周邊有鋸齒,類似大白鯊牙(ya)(ya)(ya)齒,適合切(qie)割(ge)海洋哺(bu)乳動物,上(shang)(shang)牙(ya)(ya)(ya)比下(xia)牙(ya)(ya)(ya)略寬大,左右有兩個(ge)三(san)角(jiao)突起,突起上(shang)(shang)也有鋸齒,突起外側(ce)鋸齒大一些(xie),內側(ce)相(xiang)對(dui)小(xiao)一些(xie),下(xia)牙(ya)(ya)(ya)窄,但(dan)更(geng)鋒(feng)利,鋸齒小(xiao),用于(yu)刺穿并固(gu)定獵物,上(shang)(shang)牙(ya)(ya)(ya)用于(yu)切(qie)割(ge)獵物。
椎寬9.5厘米