对Otavipithecus和Nacholapithecus的第一个椎的新见解
Amélie Beaudet1,2,3, Yasuhiro Kikuchi4, Fredrick Kyalo Manthi5
1Laboratoire de Paléontologie, Évolution, Paléoécosystèmes et Paléoprimatologie (PALEVOPRIM), UMR 7262 CNRS & Université de Poitiers, 6 Rue Michel Brunet, Poitiers, 86000, France. beaudet.amelie@gmail.com.
Scientific reports
|July 8, 2025
概括
化石原始人亚特拉斯形态学揭示了早期定位行为的洞察力. 奥塔维皮塞克斯与像潘这样的现代猿类有相似之处,表明它们有共同的行为,而纳霍拉皮塞克斯则表现出混杂的猿类和子特征.
科学领域:
- 古人类学古人类学.
- 灵长类动物解剖学 灵长类动物解剖学
- 进化生物学 进化生物学
背景情况:
- 化石原始人提供了关键数据,以了解灵长类的运动和定位行为演变.
- 亚特拉斯脊椎是椎脊柱的关键元素,提供了对头部运动和姿势的洞察力.
研究的目的:
- 为了研究Otavipithecus namibiensis和Nacholapithecus kerioi的亚特拉斯形态.
- 识别定位行为信号,并讨论早期原始人类的功能和进化影响.
- 为了比较化石标本与现存的卡塔林和白金石.
主要方法:
- 化石地图书的形态分析 (Otavipithecus namibiensis和Nacholapithecus kerioi). 这是一个很好的方法.
- 从第二个Otavipithecus图谱中整合已发表的数据.
- 使用105个现存的灵长类动物图谱进行比较分析.
- 应用标准线性测量和基于地标的几何形态测量 (GM).
- 对形态数据的统计分析.
主要成果:
- 苗代原始人马拉松的大小接近现存的潘和海洛巴特的尺寸.
- 几何形态分析表明GSN BA 104'91 (Otavipithecus) 更像是与Pan.
- 对右侧质量的分析表明,化石标本和现存的原始人类动物和cercopithecoids之间存在相似之处.
- 奥塔维皮塞克斯可能拥有部分类似于现存的原始人类动物的位置谱,包括潘.
结论:
- 奥塔维皮塞克斯很可能表现出定位行为,例如陆地四足和爬,类似于现代猿类.
- 纳霍拉皮塞克斯 (Nacholapithecus) 似乎在其轴骨架中拥有各种特征的马赛克,它结合了类似于人类的和类似于形状的特征.
- 阿特拉斯形态学为重建原始人定位行为功能和进化历史提供了有价值的证据.
相关概念视频
01:28Articulations of the Vertebral Column
2.2K
In addition to being held together by the intervertebral discs, adjacent vertebrae also articulate with each other at synovial joints formed between the superior and inferior articular processes called zygapophysial joints (facet joints). These are plane joints that provide for only limited motions between the vertebrae. The orientation of the articular processes at these joints varies in different regions of the vertebral column and serves to determine the types of motions available in each...
2.2K
01:30General Structure of a Vertebra
3.5K
A typical vertebra, with the exception of the sacrum and coccyx, consists of a body, a vertebral arch, and seven different projections termed processes. The anterior portion of the vertebrae, the body, supports about half the body’s weight. The vertebral bodies progressively increase in size and thickness from the cervical region to the lumbar region of the vertebral column. The intervertebral discs present between the bodies of adjacent vertebrae firmly unites them, forming a continuous...
3.5K
01:09Overview of the Axial Skeleton
6.1K
The skeleton is subdivided into two major divisions—the axial skeleton and the appendicular skeleton. The axial skeleton forms the vertical, central axis of the body. It includes all of the bones of the head, neck, chest, and back. It protects the brain, spinal cord, heart, and lungs. It also serves as the attachment site for muscles that move the head, neck, and back and for muscles that act across the shoulder and hip joints to move their corresponding limbs.
The axial skeleton of the...
The axial skeleton of the...
6.1K
01:16Vertebral Column: Regions and Curvature
4.1K
The vertebral column or spine is a flexible column that supports the head, neck, and body and allows for their movements. It also protects the spinal cord.
Regions of the Vertebral Column
In an adult, the spine is subdivided into five regions: the cervical, the thoracic, the lumbar, the sacral, and the coccygeal region. The spine initially develops as a series of 33 vertebrae; after 20 years of age, the nine bones in the sacral region, five sacral, and four coccygeal bones fuse to form...
Regions of the Vertebral Column
In an adult, the spine is subdivided into five regions: the cervical, the thoracic, the lumbar, the sacral, and the coccygeal region. The spine initially develops as a series of 33 vertebrae; after 20 years of age, the nine bones in the sacral region, five sacral, and four coccygeal bones fuse to form...
4.1K
01:22Sutures of the Skull
7.7K
The human skull is composed of several bones that come together to protect the brain and support the structures of the face. The junctions where these bones meet are called sutures.
Sutures are immobile joints between adjacent bones of the skull. The narrow gap between the bones is filled with dense, fibrous connective tissue that unites the bones. The long sutures located between the skull bones are not straight but instead follow irregular, tightly twisting paths. These twisting lines tightly...
Sutures are immobile joints between adjacent bones of the skull. The narrow gap between the bones is filled with dense, fibrous connective tissue that unites the bones. The long sutures located between the skull bones are not straight but instead follow irregular, tightly twisting paths. These twisting lines tightly...
7.7K
01:14Cranial Bones: Superior and Posterior View
2.9K
The superior view of the cranium shows the frontal and paired parietal bones.
The frontal bone is the single bone that forms the forehead. At its anterior midline, between the eyebrows, there is a slight depression called the glabella. The frontal bone also forms the supraorbital margin of the orbit. Near the middle of this margin is the supraorbital foramen, the opening that provides passage for a sensory nerve to the forehead. The frontal bone is thickened just above each supraorbital margin,...
The frontal bone is the single bone that forms the forehead. At its anterior midline, between the eyebrows, there is a slight depression called the glabella. The frontal bone also forms the supraorbital margin of the orbit. Near the middle of this margin is the supraorbital foramen, the opening that provides passage for a sensory nerve to the forehead. The frontal bone is thickened just above each supraorbital margin,...
2.9K