The Tiny Skull of the Peruvian Gecko Pseudogonatodes barbouri (Gekkota: Sphaerodactylidae) Obtained via a Divide-And-Conquer Approach to Morphological Data Acquisition
The Tiny Skull of the Peruvian Gecko Pseudogonatodes barbouri (Gekkota: Sphaerodactylidae) Obtained via a Divide-And-Conquer Approach to Morphological Data Acquisition
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DOI：
10.2994/sajh-d-17-00113.1
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发表时间：
2018-08-01
影响因子：
0.9
通讯作者：
Willett, James
中科院分区：
文献类型：
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作者：
Bauer, Aaron M.;Beach-Mehrotra, Mallika;Willett, James
秘鲁的球趾壁虎（Pseudogonatodes barbouri）是南美洲最小的爬行动物之一。关于这个物种的形态学信息，甚至是属，是有限的。在这项研究中，我们从头骨和寰枢椎复合体中产生了一个骨骼的描述，以提供关于这种鲜为人知的蜥蜴的新的表型信息。为了实现这一目标，我们采用了分而治之的方法，其中每个作者从头骨中数字分离出一个或两个骨骼，并对这些元素进行书面描述，从而将3D成像处理和描述减少到一小部分时间。除了手和脚的第四趾的趾骨减少外，该属的特征还包括鼻骨有宽的侧翼，一个外翼骨夹住翼骨，枕旁突前移，从而导致方骨的位置和不参与方骨悬挂的鳞骨。开窗术和孔也有改变，颌骨有骨结合的趋势（例如，冠状骨+夹板骨、复合骨+三角骨）。假性腺虫在中轴的椎体间有四个长突，是新大陆球趾类的特征。
The Peruvian sphaerodactyl gecko, Pseudogonatodes barbouri, is among the smallest reptile species in South America. Morphological information about this species, or even the genus, is limited. In this study, we produced a bone-by-bone description from the skull and atlantoaxial complex to contribute new phenotypic information about this poorly known lizard. To achieve this objective, we employed a divide-and-conquer approach in which each author digitally isolated one or two bones from the skull and produced a written description of these elements, thereby reducing 3D imaging processing and description to a fraction of time. In addition to a reduced phalanx in the fourth toe of both the hand and foot, the genus is characterized by having nasal bones with a broad lateral wing, an ectopterygoid that clasps the pterygoid, and an anterior shifting of the paroccipital process and as consequence the position of the quadrate, and squamosal not participating in the quadrate suspension. There are also modifications in fenestration and foramina and a trend towards synostosis of the jaw bones (e.g., coronoid + splenial, compound bone + surangular). Pseudogonatodes bears four long processes on the intercentrum of the axis; which is a character of New World sphaerodactyls.