The largest flying reptile from the Crato Formation, Lower Cretaceous, Brazil
The largest flying reptile from the Crato Formation, Lower Cretaceous, Brazil
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来自巴西下白垩纪克拉托组的最大飞行爬行动物
DOI：
10.1080/08912963.2018.1491567
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发表时间：
2018-07
影响因子：
1.4
通讯作者：
Antônio Á F Saraiva
中科院分区：
文献类型：
--
作者：
Xin Cheng;Renan A M Bantim;Juliana M Sayão;Alex;er W A Kellner;Xiaolin Wang;Antônio Á F Saraiva
巴西东北部Araripe盆地早白垩世沉积物中发现了大量脊椎动物化石，其中翼龙是主要的四足动物。从该盆地中发现的这一灭绝的飞行爬行动物群的几乎所有标本都来自两个地层单元，即克拉托组和罗穆阿尔多组，前者的翼龙通常是中小型的，而大型个体（最大翼展超过5米）只在后者被发现。在这里，我们报告了一个由部分右翼组成的新标本（MPSC R 1221），这是迄今为止在克拉托组发现的最大的翼龙，估计最大翼展为5.5米。尽管该材料不完整，但MPSC R 1221可以根据掌骨IV和第一翼指骨之间的长度比例被认为是anhangeridae。根据骨组织学研究和融合程度，MPSC R 1221代表亚成年个体，表明该动物在死亡前尚未达到最大尺寸。目前的研究表明，大型翼龙也存在于克拉托组，它们的稀有可能是保存的人工制品。
ABSTRACT The Early Cretaceous deposits of the Araripe Basin in northeast Brazil has yielded numerous vertebrate fossils, in which pterosaurs are the predominant tetrapods. Almost all specimens of this extinct group of flying reptiles recovered from this basin come from two stratigraphic units, the Crato and Romualdo Formations, with the pterosaurs from the former being usually small to middle-sized and large individuals (with a maximized wingspan over 5 m) being only found in the latter. Here we report on a new specimen (MPSC R 1221) composed of a partial right wing, which is the largest pterosaur discovered from the Crato Formation so far, having an estimated maximized wingspan of 5.5 m. Despite the incompleteness of this material, MPSC R 1221 can be referred to the Anhangueridae based on the length ratio between the metacarpal IV and the first wing phalanx. According to the osteohistological study and the degree of fusion, MPSC R 1221 represents a sub-adult individual, showing that the animal had not reached the maximum size before its death. The present study shows that large-sized pterosaurs were also present in the Crato Formation and that their rarity might be an artefact of preservation.
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影响因子：
2.7
作者：
Pinheiro FL;Rodrigues T
通讯作者：
Rodrigues T
DOI：
--
发表时间：
2005
期刊：
--
影响因子：
--
作者：
A. Veldmeijer
通讯作者：
A. Veldmeijer
影响因子：
3.7
作者：
Pêgas RV;Leal ME;Kellner AW
通讯作者：
Kellner AW
影响因子：
3.7
作者：
Narayanan A;Paul LN;Tomar S;Patil DN;Kumar P;Yernool DA
通讯作者：
Yernool DA
影响因子：
1.4
作者：
Kellner, AWA
通讯作者：
Kellner, AWA