{"id":1654,"date":"2026-07-02T12:17:10","date_gmt":"2026-07-02T18:17:10","guid":{"rendered":"https:\/\/elcontemporaneo.mx\/?p=1654"},"modified":"2026-07-02T12:43:14","modified_gmt":"2026-07-02T18:43:14","slug":"la-garra-aterciopelada","status":"publish","type":"post","link":"https:\/\/elcontemporaneo.mx\/index.php\/2026\/07\/02\/la-garra-aterciopelada\/","title":{"rendered":"La garra aterciopelada"},"content":{"rendered":"

\"\"<\/p>\n

Al poco tiempo de la evoluci\u00f3n del primer huevo amniota ocurri\u00f3 el surgimiento de dos grandes linajes. Uno de ellos recibi\u00f3 el nombre de Sinapsida.<\/span><\/p>\n

Los sin\u00e1psidos, coloquialmente (y err\u00f3neamente) llamados \u201creptiles mamiferoides\u201d, obtuvieron la ventaja en el dominio del supercontinente Pangea a finales del Paleozoico.<\/span><\/p>\n

Algunos de estos animales, como Dimetrodon y Edaphosaurus, alcanzaron tallas tan grandes como las de los rinocerontes actuales. Y si bien su morfolog\u00eda es muy caracter\u00edstica y casi siempre podemos verlos en libros de animales prehist\u00f3ricos, debemos recordar no confundirlos con dinosaurios.<\/span><\/p>\n

Su diversidad alcanz\u00f3 su m\u00e1ximo esplendor a finales del P\u00e9rmico, pero todo cambio cuando la Naci\u00f3n del Fuego atac\u00f3, figurativamente. La Crisis Permo-Tri\u00e1sica fue el peor evento de extinci\u00f3n masiva del que se tiene evidencia en el registro f\u00f3sil: erupciones volc\u00e1nicas e incendios masivos que acabaron con el 96% de las especies vivas, incluyendo el 70% de las terrestres.<\/span><\/p>\n

Casi todos los sin\u00e1psidos desaparecieron, quedando solo unos pocos supervivientes: el grupo de los ter\u00e1psidos, que resultaban ser mucho m\u00e1s peque\u00f1os que sus antecesores, m\u00e1s adaptables y m\u00e1s peludos…<\/span><\/p>\n

Estos animales, como Tetraceratops, Lycaenops y Cynognathus, fueron parientes cercanos de los ancestros de un linaje nuevo que apareci\u00f3 en el Tri\u00e1sico tard\u00edo, hace unos 220 millones de a\u00f1os: los mam\u00edferos.<\/span><\/p>\n

Estos peque\u00f1os animales nocturnos, de sangre caliente, con cobertura de pelo, con hembras que tienen cuidados parentales y producen leche para alimentar a sus cr\u00edas aparecer\u00edan en la Tierra casi al mismo tiempo que sus primos lejanos, los dinosaurios y ser\u00edan eclipsados por ellos durante 150 millones de a\u00f1os. Pero no eliminados.<\/span><\/p>\n

S\u00edgueme por: https:\/\/www.facebook.com\/DinodatosFB<\/a><\/p>\n

*Infograf\u00eda: El Contempor\u00e1neo | Dise\u00f1o editorial realizado con apoyo de inteligencia artificial (ChatGPT\/OpenAI), basado en informaci\u00f3n de este art\u00edculo de Dinodatos.<\/strong><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Al poco tiempo de la evoluci\u00f3n del primer huevo amniota ocurri\u00f3 el surgimiento de dos grandes linajes. Uno de ellos recibi\u00f3 el nombre de Sinapsida. Los sin\u00e1psidos, coloquialmente (y err\u00f3neamente) llamados \u201creptiles mamiferoides\u201d, obtuvieron la ventaja en el dominio del supercontinente Pangea a finales del Paleozoico. Algunos de estos animales, como Dimetrodon y Edaphosaurus, alcanzaron […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[13],"tags":[],"columnista":[17],"class_list":["post-1654","post","type-post","status-publish","format-standard","hentry","category-columnas","columnista-dinodatos"],"_links":{"self":[{"href":"https:\/\/elcontemporaneo.mx\/index.php\/wp-json\/wp\/v2\/posts\/1654","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/elcontemporaneo.mx\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/elcontemporaneo.mx\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/elcontemporaneo.mx\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/elcontemporaneo.mx\/index.php\/wp-json\/wp\/v2\/comments?post=1654"}],"version-history":[{"count":3,"href":"https:\/\/elcontemporaneo.mx\/index.php\/wp-json\/wp\/v2\/posts\/1654\/revisions"}],"predecessor-version":[{"id":1658,"href":"https:\/\/elcontemporaneo.mx\/index.php\/wp-json\/wp\/v2\/posts\/1654\/revisions\/1658"}],"wp:attachment":[{"href":"https:\/\/elcontemporaneo.mx\/index.php\/wp-json\/wp\/v2\/media?parent=1654"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/elcontemporaneo.mx\/index.php\/wp-json\/wp\/v2\/categories?post=1654"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/elcontemporaneo.mx\/index.php\/wp-json\/wp\/v2\/tags?post=1654"},{"taxonomy":"columnista","embeddable":true,"href":"https:\/\/elcontemporaneo.mx\/index.php\/wp-json\/wp\/v2\/columnista?post=1654"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}