{"id":7970,"date":"2024-09-25T07:10:55","date_gmt":"2024-09-25T07:10:55","guid":{"rendered":"https:\/\/www.fosilpaleos.com\/?post_type=product&p=7970"},"modified":"2024-09-25T07:15:26","modified_gmt":"2024-09-25T07:15:26","slug":"xiphosura","status":"publish","type":"product","link":"https:\/\/www.fosilpaleos.com\/en\/product\/xiphosura\/","title":{"rendered":"Xiphosura"},"content":{"rendered":"

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Sistema: Ordov\u00edcico.
\nPiso: Tremadociense.
\nFormaci\u00f3n: Fezouata.
\nProcedencia: Bou Chrebeb, Zagora, Marruecos.<\/p>\n

Medidas del xifosuro: 9 cm x 2,7 cm<\/span><\/div>\n
Medidas de la placa: 11 cm x 7,2 cm<\/span><\/div>","protected":false},"featured_media":7973,"template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"
\r\n
Los\u00a0xifosuros\u00a0son un orden\u00a0de\u00a0quelicerados<\/a>\u00a0marinos. La especie m\u00e1s conocida es el cangrejo de herradura, aunque son todos muy semejantes entre s\u00ed. Se consideran\u00a0f\u00f3siles vivientes<\/a>\u00a0porque han evolucionado muy poco en sus m\u00e1s de 475 millones de a\u00f1os de existencia; aparecieron por primera vez en el registro f\u00f3sil en el\u00a0Ordov\u00edcico<\/a>\u00a0inferior.\u00a0\u00a0<\/span><\/div>\r\n
Viven en los fondos marinos. Son carn\u00edvoros y se alimentan de moluscos, an\u00e9lidos y otros invertebrados marinos, de animales muertos, que sujetan y desmenuzan con los quel\u00edceros.<\/span><\/div>\r\n<\/div>\r\n
Los yacimientos de Fezouata, cerca de la ciudad marroqu\u00ed de Zagora, est\u00e1n proporcionando un riqu\u00edsimo muestrario de una fauna similar, aunque posterior en el tiempo, a la famosa de Burgess Shale (Canad\u00e1). Hablamos de f\u00f3siles de entre 480 y 472 millones de a\u00f1os. La edad indica que las comunidades del tipo de Burgess Shale no se restringieron, como se cre\u00eda, a las primeras etapas del C\u00e1mbrico para luego desaparecer s\u00fabitamente, sino que pervivieron mucho m\u00e1s tiempo, convivieron con la fauna posterior y ser\u00edan el tipo de fauna normal de las profundidades marinas en todo el planeta. Entonces Marruecos era un oc\u00e9ano y estaba sobre el polo Sur.<\/span><\/div>\r\n
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