Powered by OpenAIRE graph
Found an issue? Give us feedback
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ LAReferencia - Red F...arrow_drop_down
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
CONICET Digital
Article . 2020
License: CC BY NC SA
Data sources: CONICET Digital
versions View all 2 versions
addClaim

Presence of exceptionally preserved structures in the breathing areas of panochthus burmeister (Xenarthra, glyptodontidae) from the late pleistocene of Argentina

Authors: Zamorano, Martín;

Presence of exceptionally preserved structures in the breathing areas of panochthus burmeister (Xenarthra, glyptodontidae) from the late pleistocene of Argentina

Abstract

En esta contribución se presentan materiales excepcionalmente preservados correspondientes a las zonas laringea y traqueal de las vías aéreas de gliptodóntidos (Xenarthra; Cingulata); dos de la zona laríngea, el cartílago tiroides (MPLK 0004) y el cartílago cricoides (MHM-P 87) y una de la zona traqueal, fragmentos de los anillos traqueales (MHM-P 87), todos estos cartílagos están osificados, procedentes del Pleistoceno tardío de Buenos Aires (Argentina). A su vez, se reconstruyen los músculos que involucran a los cartílagos mencionados. El material de estudio corresponde a dos especímenes, ambos previamente fueron atribuidos a Panochthus sp. Panochthus Burmeister es uno de los Glyptodontidae más frecuentes y diversificados del Pleistoceno de América del Sur. El cartílago tiroides transversalmente a su eje tiene una sección en forma de ?U?, en la porción anterior están las carillas para el hueso impar y en la posterior las carillas donde contacta el cricoide. Los 20 fragmentos de anillos traqueales principalmente varían de 19 a 54 mm de largo y de 6 a 8 mm de ancho, el cartílago cricoides tiene forma similar a la de un anillo traqueal, aunque es de mayor tamaño. La relación de tamaño entre los cartílagos estudiados verifica que las proporciones son las mismas que en otros xenartros. Las rugosidades en la lámina lateral del cartílago tiroides permite concluir que la inserción del músculo cricotiroides es importante y el último cartílago se desplaza significativamente hacia el cráneo. Estudios como este generaran nuevos conocimientos sobre la paleobiología de la megafauna sudamericana.

In this contribution, exceptionally preserved materials related to the laryngeal and tracheal areas of the glyptodontids airways (Xenarthra; Cingulata) are presented: two of the laryngeal zone, the thyroid cartilage (MPLK 0004) as well as the cricoid cartilage (MHM-P 87), and one of the tracheal zone, fragments of the tracheal rings (MHM-P 87). All these cartilages are ossified and come from the Late Pleistocene of Buenos Aires (Argentina). In turn, the muscles that involve the aforementioned cartilage are reconstructed. The studied material corresponds to two different specimens attributed to Panochthus sp. in previous publications. Panochthus Burmeister is one of the most frequent and diversified Glyptodontidae of the Pleistocene in South American. The thyroid cartilage is U-shaped in section, in the anterior portion are the articular surfaces for the V-bone and in the posterior part the veneers where the cricoid contacts. The 20 fragments of tracheal rings rang from 19 to 54 mm long and from 6 to 8 mm wide. The cricoid cartilage is similar in shape to a tracheal ring, although larger. The size relationship between the study cartilages verifies that the proportions are the same as in other xenarthros. The roughness in the lateral lamina of the thyroid cartilage allows us to conclude that the insertion of the cricothyroid muscle is important and the last cartilage moves significantly towards to the skull. Studies like this will generate new knowledge about the palaeobiology of the South American mammal megafauna.

Fil: Zamorano, Martín. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina

Country
Argentina
Keywords

FOSSIL MAMMALS, https://purl.org/becyt/ford/1.5, CRICOID CARTILAGE, SOUTH AMERICA, TRACHEAL CARTILAGES, https://purl.org/becyt/ford/1, THYROID CARTILAGE

  • BIP!
    Impact byBIP!
    selected citations
    These citations are derived from selected sources.
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    0
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
Powered by OpenAIRE graph
Found an issue? Give us feedback
selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green