Video Experimental Relacionado
Updated: May 22, 2025
08:15
Reverse Dissection and DiceCT Reveal Otherwise Hidden Data in the Evolution of the Primate Face
Published on: January 7, 2019
6.8K
El primer rostro humano de Europa occidental
Rosa Huguet1,2,3, Xosé Pedro Rodríguez-Álvarez4,5, María Martinón-Torres6,7
1Institut Català de Paleoecologia Humana i Evolució Social (IPHES-CERCA), Tarragona, Spain. rhuguet@iphes.cat.
Nature
|March 13, 2025
Resumen
El rostro humano más antiguo de Europa occidental, encontrado en España y datado de hace 1,4-1,1 millones de años, ofrece nuevos conocimientos sobre las primeras poblaciones de homínidos. Este fósil sugiere una rotación de población en Europa durante la época del Pleistoceno temprano.
Área de la Ciencia:
- Paleoantropología
- El comienzo de la evolución humana
- Estudios del Pleistoceno
Sus antecedentes:
- Comprender el asentamiento inicial de Eurasia, particularmente Europa Occidental, durante el Pleistoceno Temprano sigue siendo un desafío.
- La evidencia paleoantropológica existente de Europa Occidental es escasa, principalmente limitada a la Península Ibérica.
Objetivo del estudio:
- Para presentar un fósil de la cara media de un homínido recién descubierto en el sitio de Sima del Elefante en España.
- Para analizar la morfología del fósil y la datación para entender a los primeros habitantes de Europa Occidental.
Principales métodos:
- Excavación y análisis de restos fósiles del nivel TE7 en el yacimiento de Sima del Elefante.
- Datación radiométrica de la capa fósil para determinar su edad.
- Análisis morfológico comparativo con otros fósiles de homínidos tempranos.
Principales resultados:
- El descubrimiento del fósil ATE7-1, que representa el rostro humano más antiguo encontrado en Europa occidental, data de hace entre 1,4 y 1,1 millones de años.
- El fósil exhibe características primitivas del clado Homo, distintas del Homo antecesor encontrado cerca.
- Las características morfológicas sugieren la asignación a Homo aff. erectus, con características derivadas en la región nasoalveolar en comparación con los homínidos de Dmanisi.
Conclusiones:
- El fósil ATE7-1 proporciona evidencia crucial para la presencia de los primeros homínidos en Europa Occidental.
- Los hallazgos sugieren una rotación potencial de la población en Europa al final del Pleistoceno temprano, basada en datos arqueológicos y paleoantropológicos combinados.
Videos de Conceptos Relacionados
01:24Facial Feedback Hypothesis
108
Charles Darwin proposed that facial expressions are an evolutionary adaptation for communication. He argued that these expressions are not influenced by culture but are universal across species. For example, a snarling expression with exposed teeth signals a threat in many animals, including humans. Darwin also suggested that displaying an emotion can intensify the feeling. Smiling, for example, could enhance one's sense of happiness. This idea laid the foundation for understanding the role...
108
01:21Association Areas of the Cortex
4.8K
Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
4.8K
02:35What is Evolutionary History?
36.1K
Scientists record evolutionary history by analyzing fossil, morphological, and genetic data. The fossil record documents the history of life on Earth and provides evidence for evolution. However, both fossil and living organisms offer evidence that outlines Earth’s evolutionary history.
36.1K
02:56The Fossil Record
24.9K
The fossil record documents only a small fraction of all organisms that have ever inhabited Earth. Fossilization is a rare process, and most organisms never become fossils. Moreover, the fossil record only exhibits fossils that have been discovered. Nevertheless, sedimentary rock fossils of long-lived, abundant, hard-bodied organisms dominate the fossil record. These fossils offer valuable information, such as an organism's physical form, behavior, and age. Studying the fossil record helps...
24.9K
01:24Eukaryotic Evolution
30.7K
The endosymbiont theory is the most widely accepted theory of eukaryotic evolution; however, its progression is still somewhat debated. According to the nucleus-first hypothesis, the ancestral prokaryote first evolved a membrane to enclose DNA and form the nucleus. Conversely, the mitochondria-first hypothesis suggests that the nucleus was formed after endosymbiosis of mitochondria.
Contrary to the endosymbiont theory, the eukaryote-first hypothesis proposes that the simpler prokaryotic and...
Contrary to the endosymbiont theory, the eukaryote-first hypothesis proposes that the simpler prokaryotic and...
30.7K
01:14Cranial Bones: Superior and Posterior View
1.9K
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,...
1.9K