File:Ptychodus vertebra.PNG
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English: Calcification pattern of the vertebral centra of EMRG-Chond-SK-1. (A) close up view and illustration of the vertebral centra EMRG-Chond-SK-1a. The articular surface is weathered and exposes the inner layer of the vertebrae, showing concentric calcareous rings and parallel bands that run perpendicular to them; (B) vertebral section in transverse plane and illustration of EMRG-Chond-SK-1b show an asterospondylic calcification pattern with four cartilage wedges radiating diagonally from the center to the base of the neural and haemal arches.
Español: Fig. 3. Patrón de calcificación de los centros vertebrales de EMRG-Chond-SK-1. (A) vista de cerca e ilustración del centro vertebral EMRG-Chond-SK-1a. La superficie articular está desgastada y expone la capa interna de las vértebras, mostrando anillos calcáreos concéntricos y bandas paralelas que corren perpendiculares a ellas; |
| Date | |
| Source | Articulated remains of the extinct shark Ptychodus (Elasmobranchii, Ptychodontidae) from the Upper Cretaceous of Spain provide insights into gigantism, growth rate and life history of ptychodontid sharks. PLoS ONE 15(4): e0231544. |
| Author | Jambura PL, Kriwet J |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 13:31, 3 May 2020 | | 1,940 × 1,798 (3.32 MB) | Sanador2.0 (talk | contribs) | {{Information |description ={{es|1=Fig. 3. Patrón de calcificación de los centros vertebrales de EMRG-Chond-SK-1.<br> (A) vista de cerca e ilustración del centro vertebral EMRG-Chond-SK-1a. La superficie articular está desgastada y expone la capa interna de las vértebras, mostrando anillos calcáreos concéntricos y bandas paralelas que corren perpendiculares a ellas;<br> (B) la sección vertebral en el plano transversal y la ilustración de EMRG-Chond-SK-1b muestran un patrón de calcificación... |
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