韓國(guó)古生物學(xué)家發(fā)現(xiàn)一組化石,，顯現(xiàn)迄今所知最大的恐龍牙齒咬痕,，由食肉龍留在一只食草龍的尾椎上。
化石顯現(xiàn)的最大齒痕長(zhǎng)17厘米,、寬2厘米,、深1.5厘米。
德新社8月1日援引韓國(guó)釜慶大學(xué)環(huán)境科學(xué)院教授白寅成（音譯）所做解釋報(bào)道：?jiǎn)渭円罁?jù)化石上的“齒痕非常難以確認(rèn)（食肉龍所屬）種類”,。不過,，齒痕能幫助推斷食肉龍的捕食習(xí)性。
至于尾椎上留下齒痕的食草龍,，研究人員在由《古地理學(xué)·古氣候?qū)W·古生態(tài)學(xué)》（Palaeogeography, Palaeoclimatology, Palaeoecology）期刊網(wǎng)絡(luò)版刊載的論文中認(rèn)定,，那是一只成年“釜慶龍”，即1.2億年前左右生活在朝鮮半島的一類四足食草龍,。
鑒于齒痕呈現(xiàn)不同形狀和大小,，研究人員推斷同一只食草龍?jiān)?jīng)遭遇多種食肉龍捕食。
恐龍齒痕化石去年12月底由白寅成及其同事在位于朝鮮半島東南部的河?xùn)|郡發(fā)掘獲得,，屬于在韓國(guó)境內(nèi)的首次發(fā)現(xiàn),。(生物谷 Bioon.com)
doi:10.1016/j.palaeo.2011.07.002
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Diverse tooth marks on an adult sauropod bone from the Early Cretaceous, Korea
In Sung Paika, , , Hyun Joo Kima, Jong Deock Limb, Min Huhc and Ho Il Leea
Although carnivorous dinosaurs probably engaged in both predation and scavenging, it has been suggested that the tyrannosaurids were uniquely scavengers. The fossil record of bone damage resulting from predation by carnivorous theropod dinosaurs is sparse, and it is often difficult to determine whether tooth-marks were produced through predation or scavenging. In this study unusual tooth-marks on a caudal vertebra of an adult sauropod from the Lower Cretaceous Hasandong Formation, Korea, which are the deepest and longest scores ever documented, are described. In addition to these tooth-marks, small tooth-strike lesions, including shallow gouges and divots, are present on the same bone. These tooth-marks provide insight into the feeding behaviour of dinosaurs that scavenged the bodies of large, adult dinosaurs. The presence of both large and small tooth-marks on a single bone suggests that theropods of different sizes or kinds exploited the same adult sauropod carcass to deflesh it and/or to obtain bone nutrients, in a manner identical to that of modern carnivores.
