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Carbon Skeletons

Life on Earth is carbon-based, as all macromolecules that make up living organisms contain carbon atoms. All organic compounds have a carbon backbone. Each carbon atom is tetravalent and can bond with four other atoms, making it an extraordinarily flexible component of biological molecules. Because carbon’s valence electrons are stable, it rarely becomes an ion. As the carbon chain increases in length, structural modifications such as ring structures, double bonds, and branching side chains...
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Phylogeny

Phylogeny is concerned with the evolutionary diversification of organisms or groups of organisms. A group of organisms with a name is called a taxon (singular). Taxa (plural) can span different levels of the evolutionary hierarchy. For instance, the group containing all birds is a taxon (comprising the class Aves), and the group of all species of daisies (the genus Bellis) is a taxon. Phylogenies can likewise include just one genus (i.e., depict species relationships) or span an entire...
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Phylogenetic Trees

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The Fossil Record02:56

The Fossil Record

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...
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Sampling and Pretreatment of Tooth Enamel Carbonate for Stable Carbon and Oxygen Isotope Analysis
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Paleontología: Fósiles hechos a pedido, de cualquier tamaño.

E Stokstad

    Science (New York, N.Y.)
    |September 11, 2007
    PubMed
    Resumen

    Los investigadores crearon réplicas ligeras de extremidades de dinosaurio utilizando el escaneo 3D y la creación rápida de prototipos. Esto permite un estudio más fácil de la postura y la marcha de los dinosaurios, superando el desafío de los pesados huesos fosilizados.

    Área de la Ciencia:

    • Paleontología Paleontología.
    • La biomecánica es la biomecánica.

    Sus antecedentes:

    • El estudio de la postura y la marcha de los dinosaurios requiere el análisis de la articulación de las extremidades.
    • Los fósiles de dinosaurios grandes, como los omóplatos, son extremadamente pesados, lo que dificulta la investigación.
    • Los métodos tradicionales para estudiar extremidades fosilizadas son desafiantes debido a su tamaño y peso.

    Objetivo del estudio:

    • Desarrollar un método para estudiar la postura y la marcha de los grandes dinosaurios.
    • Para superar las limitaciones físicas planteadas por el peso y el tamaño de los fósiles de dinosaurios.

    Principales métodos:

    • Utilizó tecnología de escaneo industrial para capturar datos detallados en 3D de huesos fosilizados de extremidades de dinosaurios.
    • Empleó técnicas de prototipo rápido para crear réplicas ligeras y a escala de estos huesos.

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  • Centrado en elementos grandes como los omóplatos que presentan desafíos de peso significativos.

    • Principales resultados:

    • Produjo con éxito réplicas portátiles y de alta fidelidad de los huesos de las extremidades de grandes dinosaurios.
    • Estas réplicas reducen significativamente el peso y el volumen asociados con el estudio de fósiles masivos.
    • Permitió una manipulación y análisis más fáciles de las estructuras esqueléticas cruciales para los estudios biomecánicos.

    Conclusiones:

    • El escaneo industrial y la creación rápida de prototipos ofrecen una solución viable para la investigación paleontológica en grandes animales extintos.
    • Este enfoque tecnológico facilita análisis biomecánicos más accesibles y detallados de la locomoción de los dinosaurios.
    • Los estudios futuros sobre la postura y la marcha de los dinosaurios pueden beneficiarse de estos métodos avanzados de replicación.