A new lizard skull from the Purbeck Limestone Group (Lower Cretaceous) of England
A new lizard skull from the Purbeck Limestone Group (Lower Cretaceous) of England
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DOI：
10.2113/gssgfbull.183.6.517
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发表时间：
2012-01-01
影响因子：
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通讯作者：
Matsumoto, Ryoko
中科院分区：
文献类型：
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作者：
Evans, Susan E.;Jones, Marc E. H.;Matsumoto, Ryoko
英格兰普贝克石灰岩群发现了丰富的晚侏罗世至早白垩世(Berriasian)脊椎动物化石组合，其中包括有记录以来最多样化的早白垩世蜥蜴组合之一。在这里，我们描述了来自普贝克的第一个关节蜥蜴头骨。该标本在英国地质调查局的藏品中被重新发现，至少在一个世纪前被挖掘出来。新的Purbeck头骨虽然最初归属于Purbeck属，但在额部、翼骨和上颌骨的形态上不同于包括Paracellodus在内的其他Purbeck属，具有上颌骨和一些牙齿特征。它在这里被归入一个新的属和种。分支系统分析将其归类为Lacertoidae，而不同于Paracellodus、Becklesius和Parasaurusus将其归类为鳞片和心形。
The Purbeck Limestone Group of England has yielded a rich assemblage of Late Jurassic to Early Cretaceous (Berriasian) vertebrate fossils, including one of the most diverse Early Cretaceous lizard assemblages on record. Here we describe the first articulated lizard skull from Purbeck. The specimen was rediscovered in the collections of the British Geological Survey, having been excavated at least a century ago. Although originally assigned to the Purbeck genus Paramacellodus, with which it shares maxillary and some dental characters, the new Purbeck skull differs from other Purbeck genera, including Paramacellodus, in frontal, pterygoid and maxillary morphology. It is here assigned to a new genus and species. Cladistic analysis groups it with Lacertoidea, unlike Paramacellodus, Becklesius and Parasaurillus which group with scincids and cordyliforms.