Healed Bite Marks on a Cretaceous Ichthyosaur
Healed Bite Marks on a Cretaceous Ichthyosaur
复制标题
白垩纪鱼龙的咬痕已愈合
DOI：
10.4202/app.2010.0117
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发表时间：
2011
影响因子：
--
通讯作者：
B. Kear
中科院分区：
文献类型：
--
作者：
Maria Zammit;B. Kear
病理性鱼龙化石的报道非常罕见。一个成年人下颌上一系列愈合的切口和相关的凿痕的鉴定（约1000年）。因此，来自澳大利亚早白垩世的鸭嘴兽标本意义重大，因为它构成了动物一生中遭受咬合力创伤的直接证据。根据伤口的距离和非致命的面部位置，他们可能不是由捕食者造成的。另一种解释可能包括与另一种大型脊椎动物的意外攻击性遭遇，或者可能是种内相互作用，例如在求偶或争夺食物，配偶或领土的战斗中。
Reports of pathological ichthyosaur fossils are very rare. The identification of a series of healed cuts and an associated gouge on the lower jaw of an adult (ca. 5 metres body length) Platypterygius specimen from the Lower Cretaceous of Australia is therefore significant, because it constitutes direct evidence of bite force trauma sustained during the life of the animal. Based on the close spacing and non-lethal facial positioning of the wounds, they were probably not inflicted by a predator. Alternative explanations might include an accidental aggressive encounter with another large vertebrate, or perhaps an intraspecific interaction such as during courtship or combat over food, mates, or territory.