On the spinosaurid theropod teeth from the early Barremian (Early Cretaceous) Blesa Formation (Spain)
On the spinosaurid theropod teeth from the early Barremian (Early Cretaceous) Blesa Formation (Spain)
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DOI：
10.1080/08912963.2015.1036751
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发表时间：
2016-08-17
影响因子：
1.4
通讯作者：
Ignacio Canudo, Jose
中科院分区：
文献类型：
--
作者：
Alonso, Antonio;Ignacio Canudo, Jose
棘龙是伊比利亚半岛早白垩世最丰富的兽脚类之一。已公布的化石记录主要包括牙齿。一个很好的例子是西班牙Blesa组的La坎塔莱拉-1遗址。这个地点代表了一个沼泽环境，周期性的干旱，导致了一个非永久性的水体。兽脚类恐龙的牙齿是经常出现的。对17颗棘龙牙齿进行了定性和定量特征的研究，包括统计分析，以便将它们与西班牙的已知棘龙记录进行比较。在La CATALERA-1中，我们识别出两种不同的形态类型：大眼蜂。那棘龙亚科呢？INTER.中国大理石属植物。是由重爪龙附近的重甲鱼产生的；类似形态的牙齿在伊比利亚半岛早白垩世的其他地方也被描述过。牙齿暂定归属于棘龙亚科？INTER.都是由棘龙附近的棘龙产生的。这一形态类型可能为伊比利亚半岛早白垩世棘龙的存在提供新的证据。与其他地点的牙齿相比，La坎塔莱拉-1的牙齿较小，被解释为沉积区特有的条件的结果，这代表了一个无法维持大型生物体的生态系统。
Spinosaurids are one of the most abundant theropods from the Early Cretaceous of the Iberian Peninsula. The published fossil record consists mainly of teeth. A good example is La Cantalera-1 site in the Blesa Formation (Spain). This site represents a marshy environment with periodic droughts, resulting in a non-permanent body of water. Theropod dinosaur teeth are frequent. Seventeen spinosaurid teeth have been studied using qualitative and quantitative features, including a statistical analysis, in order to compare them with the known spinosaurid record from Spain. In La Cantalera-1 we recognise two different morphotypes: Baryonychinae indet. and Spinosaurinae? indet. Baryonychinae indet. was produced by baryonychines close to Baryonyx; teeth with similar morphology have been described in other sites from the Early Cretaceous of the Iberian Peninsula. Teeth tentatively attributed to Spinosaurinae? indet. were produced by spinosaurines close to Spinosaurus. This morphotype could provide new evidence of the presence of spinosaurines in the Early Cretaceous of the Iberian Peninsula. The small size of the teeth from La Cantalera-1 when compared with those from other sites is interpreted as the result of the conditions characteristic of the deposit area, which represents an ecosystem unable to sustain large-sized organisms.