Reinterpretation of a remarkably well preserved pterosaur soft tissue from the Early Cretaceous of Brazil
Reinterpretation of a remarkably well preserved pterosaur soft tissue from the Early Cretaceous of Brazil
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DOI：
10.1080/02724634.1996.10011360
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发表时间：
1996-12-01
影响因子：
1.4
通讯作者：
Kellner, AWA
中科院分区：
文献类型：
--
作者：
Kellner, AWA
巴西早白垩世翼龙骨骼和相关软组织的鉴定是一个有争议的问题。标本（DGM 1475-R）之前被误认为是前臂的一部分，相关的软组织被误认为是桡骨和尺骨附近的翼膜的一部分。然而，被描述为“桡骨和尺骨”的骨头实际上是左肱骨和肋骨的近端部分。肩胛骨、喙突和其他肋骨也存在。SEM分析显示没有任何层的重复（例如，表皮）和结构纤维（除了肌肉纤维）是缺席的，相反，将在翅膜横切面的预期。这表明软组织是肩胛带和胸部附近的体壁的一部分，而不是主要涉及八（=翅膜）的软组织的一部分。
The identification of some pterosaur bones and associated soft tissue from the Early Cretaceous of Brazil is a controversial issue. The specimen (DGM 1475-R) was previously mistaken as part of a forearm and the associated soft tissue was misinterpreted as part of the wing membrane near the radius and ulna. However, the bones described as the ''radius and the ulna'' are in fact the proximal part of a left humerus and a rib. The scapula, coracoid, and other ribs are also present. SEM analysis shows that there is no duplication of any layer (e.g., epidermis) and that structural fibers (except muscle fibers) are absent, contrary to what would be expected in a transverse section of wing membrane. This suggests that the soft tissue is part of the integument near the shoulder girdle and thorax, and is not part of the soft tissue primarily involved in Eight (=wing membrane).