Convergent avialan brain morphology in Sinovenator (Troodontidae, Theropoda)

Sinovenator changii IVPP V20378 is a troodontid theropod dinosaur from the Early Cretaceous strata in Liaoning, northeastern China. The specimen is a nearly complete 3D-preserved skeleton. The postcranial elements are in sleeping posture and the skull is isolated from the rest. The skull suffered only slight deformation and distortion, completely preserving most of its elements except the left postorbital, parietal, and squamosal. The dataset comprises three .stl files of the skull, brain endocast, and inner ear of Sinovenator changii IVPP V20378. , The skull and postcranial skeleton of this specimen were scanned separately at the Institute of Vertebrate Paleontology and Paleoanthropology, Beijing, China. The scanning was carried out using the 225 kV micro-computerized tomography (developed by the Institute of High Energy Physics, Chinese Academy of Sciences (CAS)) at the Key Laboratory of Vertebrate Evolution and Human Origins, CAS. The specimen was scanned with a beam energy of 100 kV and a flux of 100 mA at a resolution of 61 μm per pixel using a 360° rotation with a step size of 0.5° and an unfiltered aluminum reflection target. The total dataset of 1,536 slices was reconstructed using two-dimensional reconstruction software MOCUPY developed by the Institute of High Energy Physics, CAS. The segmentation and rendering of the digital models were conducted in Mimics 19.0 (Materilise, Belgium). The .stl files are directly exported from Mimics 19.0., , # The skull and endocranium CT reconstruction of Sinovenator changii IVPP V20378 ## Description of the data and file structure There are three .stl files in the dataset. They are 3D reconstruction renderings of skull, brain endocast, and inner ear of the troodontid dinosaur Sinovenator changii, specimen number IVPP V20378. A .nex tree file including 51 taxa that was used in this study and related cranial endocast landmark data in .txt are also included here. Detail about data collection can be found in the manuscript. Sinovenator_Skull_001.stl Sinovenator_Brain_1221.stl Sinovenator_Inner_ear_1221.stl Sinovenator.txt SinovenatorTree.nex ## Code/Software The 3D reconstruction was conducted in software Mimics 19.0 (Materilise, Belgium), then rendered models were directly exported as .stl files.张氏中国猎龙（Sinovenator changii）IVPP V20378是产自中国东北辽宁地区早白垩世地层的伤齿龙类兽脚亚目恐龙。该标本为一具近乎完整的三维保存骨骼，其颅后骨骼呈睡眠姿态保存，头骨与躯干部分离。头骨仅发生轻微变形与扭曲，除左侧眶后骨、顶骨及鳞骨外，绝大多数骨骼结构均完整保留。 本数据集包含张氏中国猎龙IVPP V20378的头骨、颅内模（brain endocast）以及内耳（inner ear）的三个.stl格式文件。该标本的头骨与颅后骨骼分别于中国北京脊椎动物古生物与古人类研究所进行扫描。扫描工作依托中国科学院高能物理研究所研发的225千伏微型计算机断层扫描（micro-computerized tomography, μCT）设备，在中国科学院脊椎动物演化与人类起源重点实验室完成。扫描参数设置为：光束能量100千伏，管电流100毫安，像素分辨率61微米，采用360°旋转扫描，步距0.5°，使用未经过滤的铝反射靶。总计1536层的扫描数据通过中国科学院高能物理研究所自研的二维重建软件MOCUPY完成重建。数字模型的分割与渲染工作在比利时Materialise公司的Mimics 19.0软件中完成，.stl格式文件即直接从该软件导出。 # 张氏中国猎龙IVPP V20378的头骨与颅内模CT重建 ## 数据与文件结构说明 本数据集共包含三个.stl格式文件，分别为该伤齿龙类恐龙张氏中国猎龙IVPP V20378的头骨、颅内模以及内耳的三维重建渲染模型。此外，本研究中使用的包含51个分类单元的.nex格式树形文件，以及后缀为.txt的颅内模地标数据文件也一并收录于此。有关数据采集的详细信息可参见相关研究论文。 本次数据集包含的文件如下： Sinovenator_Skull_001.stl Sinovenator_Brain_1221.stl Sinovenator_Inner_ear_1221.stl Sinovenator.txt SinovenatorTree.nex ## 代码与软件 本次三维重建工作在比利时Materialise公司的Mimics 19.0软件中完成，渲染完成的模型直接导出为.stl格式文件。