{"id":9751,"date":"2025-12-02T18:58:20","date_gmt":"2025-12-02T17:58:20","guid":{"rendered":"https:\/\/clientes.munecarusa.com\/mp\/?p=9751"},"modified":"2026-02-21T14:37:12","modified_gmt":"2026-02-21T13:37:12","slug":"naraoia","status":"publish","type":"post","link":"https:\/\/clientes.munecarusa.com\/mp\/naraoia\/","title":{"rendered":"Naraoia"},"content":{"rendered":"<p>[et_pb_section fb_built=\u00bb1&#8243; custom_padding_last_edited=\u00bboff|phone\u00bb disabled_on=\u00bboff|off|off\u00bb admin_label=\u00bbFondo Men\u00fa\u00bb _builder_version=\u00bb4.27.2&#8243; background_color=\u00bb#ff6600&#8243; custom_margin=\u00bb0px||20px||false|false\u00bb custom_padding=\u00bb0px||0px||true|false\u00bb collapsed=\u00bbon\u00bb global_colors_info=\u00bb{}\u00bb][\/et_pb_section][et_pb_section fb_built=\u00bb1&#8243; custom_padding_last_edited=\u00bbon|phone\u00bb disabled_on=\u00bboff|off|off\u00bb admin_label=\u00bbIntroducci\u00f3n\u00bb _builder_version=\u00bb4.27.2&#8243; background_enable_color=\u00bboff\u00bb custom_margin_last_edited=\u00bboff|phone\u00bb custom_padding=\u00bb||0px||false|false\u00bb custom_padding_tablet=\u00bb27px||0px||false|false\u00bb custom_padding_phone=\u00bb37px||||false|false\u00bb collapsed=\u00bbon\u00bb global_colors_info=\u00bb{}\u00bb][et_pb_row make_equal=\u00bbon\u00bb custom_padding_last_edited=\u00bbon|phone\u00bb _builder_version=\u00bb4.27.2&#8243; 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admin_label=\u00bbSeparador\u00bb _builder_version=\u00bb4.27.0&#8243; _module_preset=\u00bbdefault\u00bb custom_margin=\u00bb-20px||0px||false|false\u00bb custom_padding=\u00bb||||false|false\u00bb animation_style=\u00bbslide\u00bb global_colors_info=\u00bb{}\u00bb][\/et_pb_divider][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00bb4.27.2&#8243; _module_preset=\u00bbdefault\u00bb custom_margin=\u00bb||||false|false\u00bb custom_padding=\u00bb0px||10px||false|false\u00bb global_colors_info=\u00bb{}\u00bb][et_pb_column type=\u00bb4_4&#8243; _builder_version=\u00bb4.27.2&#8243; _module_preset=\u00bbdefault\u00bb animation_style=\u00bbzoom\u00bb global_colors_info=\u00bb{}\u00bb][et_pb_text content_last_edited=\u00bboff|desktop\u00bb disabled_on=\u00bboff|off|off\u00bb admin_label=\u00bbTexto\u00bb _builder_version=\u00bb4.27.5&#8243; text_text_color=\u00bb#444444&#8243; background_size=\u00bbinitial\u00bb background_position=\u00bbtop_left\u00bb background_repeat=\u00bbrepeat\u00bb text_orientation=\u00bbjustified\u00bb hover_enabled=\u00bb0&#8243; text_font_size_tablet=\u00bb16px\u00bb text_font_size_phone=\u00bb14px\u00bb text_font_size_last_edited=\u00bbon|phone\u00bb text_line_height_tablet=\u00bb1.7em\u00bb text_line_height_phone=\u00bb1.6em\u00bb text_line_height_last_edited=\u00bbon|phone\u00bb global_colors_info=\u00bb{}\u00bb sticky_enabled=\u00bb0&#8243;]<\/p>\n<h2 style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-4309 alignleft\" src=\"https:\/\/clientes.munecarusa.com\/mp\/wp-content\/uploads\/2025\/01\/margen-huella.png\" alt=\"Naraoia\" width=\"30\" height=\"50\" \/><\/h2>\n<p>Naraoia es un g\u00e9nero de artr\u00f3podos marinos de peque\u00f1o a mediano tama\u00f1o, con longitudes que oscilan entre los 2 y los 4,5 cent\u00edmetros, perteneciente a la familia Naraoiidae y con un registro f\u00f3sil que abarca desde el C\u00e1mbrico temprano hasta el Sil\u00farico tard\u00edo. Las especies de Naraoia se caracterizan por poseer un sistema digestivo notablemente amplio y antenas orientadas lateralmente, rasgos que, junto con su morfolog\u00eda corporal aplanada, lo convierten en uno de los trilobitomorfos m\u00e1s singulares del registro paleozoico. El nombre del g\u00e9nero procede de Narao, un conjunto de peque\u00f1os lagos situados en el ca\u00f1\u00f3n Cataract Brook, sobre Hector, en la l\u00ednea del Canadian Pacific Railway, en la Columbia Brit\u00e1nica, Canad\u00e1, regi\u00f3n cercana a los yacimientos donde se descubrieron los primeros ejemplares.[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=\u00bb2_3,1_3&#8243; _builder_version=\u00bb4.27.2&#8243; _module_preset=\u00bbdefault\u00bb custom_margin=\u00bb||||false|false\u00bb custom_padding=\u00bb0px||10px||false|false\u00bb global_colors_info=\u00bb{}\u00bb][et_pb_column type=\u00bb2_3&#8243; _builder_version=\u00bb4.27.2&#8243; _module_preset=\u00bbdefault\u00bb animation_style=\u00bbzoom\u00bb global_colors_info=\u00bb{}\u00bb][et_pb_image src=\u00bbhttps:\/\/clientes.munecarusa.com\/mp\/wp-content\/uploads\/2025\/12\/Naraoia.webp\u00bb alt=\u00bbNaraoia\u00bb show_in_lightbox=\u00bbon\u00bb use_overlay=\u00bbon\u00bb overlay_icon_color=\u00bb#ff6600&#8243; 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} .et_monarch .et_social_shortcode_0 .et_social_icons_container li:hover .et_social_icon, .et_monarch .et_social_shortcode_0 .et_social_networks .et_social_icons_container li:hover .et_social_network_label, .et_monarch .et_social_shortcode_0 .et_social_icons_container li:hover .et_social_networkname, .et_monarch .et_social_rounded.et_social_shortcode_0 .et_social_icons_container li:hover .et_social_count, .et_monarch .et_social_rectangle.et_social_shortcode_0 .et_social_icons_container li:hover .et_social_count { color: #ffffff !important; }<\/style>\n\t\t\t\t\t\n\t\t\t\t\t<ul class=\"et_social_icons_container\"><li class=\"et_social_like\">\n\t\t\t\t\t\t<a href=\"#\" class=\"et_social_follow\" data-social_name=\"like\" data-social_type=\"like\" data-post_id=\"0\" target=\"_blank\">\n\t\t\t\t\t\t\t<i class=\"et_social_icon et_social_icon_like\"><\/i>\n\t\t\t\t\t\t\t<div class=\"et_social_network_label\"><div class=\"et_social_networkname\">Me gusta<\/div><div class=\"et_social_count\">\n\t\t\t\t\t\t<span>0<\/span>\n\t\t\t\t\t\t<span class=\"et_social_count_label\">Likes<\/span>\n\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t<span class=\"et_social_overlay\"><\/span>\n\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/li><\/ul>\n\t\t\t\t<\/div>[\/et_pb_code][et_pb_post_title meta=\u00bboff\u00bb featured_image=\u00bboff\u00bb _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb title_font=\u00bb|600||on|||||\u00bb title_text_align=\u00bbcenter\u00bb title_text_color=\u00bb#000000&#8243; title_font_size=\u00bb35px\u00bb title_letter_spacing=\u00bb1px\u00bb custom_margin=\u00bb||0px||false|false\u00bb animation_direction=\u00bbbottom\u00bb title_font_size_tablet=\u00bb30px\u00bb title_font_size_phone=\u00bb20px\u00bb title_font_size_last_edited=\u00bbon|desktop\u00bb global_colors_info=\u00bb{}\u00bb][\/et_pb_post_title][et_pb_text content_last_edited=\u00bboff|phone\u00bb disabled_on=\u00bboff|off|off\u00bb admin_label=\u00bbSubt\u00edtulo\u00bb _builder_version=\u00bb4.27.4&#8243; header_2_font=\u00bb||||||||\u00bb header_3_font=\u00bb|700||on|||||\u00bb header_3_text_align=\u00bbcenter\u00bb header_3_text_color=\u00bb#444444&#8243; header_3_font_size=\u00bb30px\u00bb header_4_font=\u00bb||||||||\u00bb background_size=\u00bbinitial\u00bb background_position=\u00bbtop_left\u00bb background_repeat=\u00bbrepeat\u00bb text_font_size_last_edited=\u00bboff|phone\u00bb text_line_height_last_edited=\u00bboff|desktop\u00bb header_2_font_size_last_edited=\u00bboff|phone\u00bb header_3_font_size_tablet=\u00bb25px\u00bb header_3_font_size_phone=\u00bb15px\u00bb header_3_font_size_last_edited=\u00bbon|phone\u00bb header_4_font_size_last_edited=\u00bboff|phone\u00bb global_colors_info=\u00bb{}\u00bb header_4_text_color__hover_enabled=\u00bboff|hover\u00bb]<\/p>\n<h3>FAUNA DEL SIL\u00daRICO<\/h3>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column type=\u00bb1_3&#8243; _builder_version=\u00bb4.27.2&#8243; _module_preset=\u00bbdefault\u00bb animation_style=\u00bbslide\u00bb animation_direction=\u00bbright\u00bb sticky_limit_top=\u00bbrow\u00bb sticky_limit_bottom=\u00bbrow\u00bb global_colors_info=\u00bb{}\u00bb][et_pb_accordion db_closeable=\u00bbon\u00bb db_initial_state=\u00bball_closed\u00bb open_toggle_text_color=\u00bb#FFFFFF\u00bb open_toggle_background_color=\u00bb#660000&#8243; closed_toggle_text_color=\u00bb#FFFFFF\u00bb closed_toggle_background_color=\u00bb#ff6600&#8243; toggle_icon=\u00bb&#x50;||divi||400&#8243; icon_color=\u00bb#FFFFFF\u00bb use_icon_font_size=\u00bbon\u00bb icon_font_size=\u00bb25px\u00bb _builder_version=\u00bb4.27.5&#8243; _module_preset=\u00bbdefault\u00bb toggle_text_color=\u00bb#FFFFFF\u00bb toggle_font=\u00bb|700|||||||\u00bb toggle_font_size=\u00bb22px\u00bb toggle_letter_spacing=\u00bb1px\u00bb body_font=\u00bb|600|||||||\u00bb body_text_color=\u00bb#FFFFFF\u00bb background_enable_color=\u00bboff\u00bb custom_margin=\u00bb25px||||false|false\u00bb custom_margin_tablet=\u00bb0px||||false|false\u00bb custom_margin_phone=\u00bb0px||||false|false\u00bb custom_margin_last_edited=\u00bbon|tablet\u00bb hover_enabled=\u00bb0&#8243; 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_module_preset=\u00bbdefault\u00bb custom_margin=\u00bb||||false|false\u00bb custom_padding=\u00bb30px||||false|false\u00bb animation_style=\u00bbzoom\u00bb hover_enabled=\u00bb0&#8243; global_colors_info=\u00bb{}\u00bb sticky_enabled=\u00bb0&#8243;][et_pb_column type=\u00bb4_4&#8243; _builder_version=\u00bb4.27.2&#8243; _module_preset=\u00bbdefault\u00bb global_colors_info=\u00bb{}\u00bb][et_pb_text content_last_edited=\u00bboff|desktop\u00bb disabled_on=\u00bboff|off|off\u00bb admin_label=\u00bbTexto\u00bb _builder_version=\u00bb4.27.5&#8243; text_text_color=\u00bb#444444&#8243; background_size=\u00bbinitial\u00bb background_position=\u00bbtop_left\u00bb background_repeat=\u00bbrepeat\u00bb text_orientation=\u00bbjustified\u00bb hover_enabled=\u00bb0&#8243; text_font_size_tablet=\u00bb16px\u00bb text_font_size_phone=\u00bb14px\u00bb text_font_size_last_edited=\u00bbon|phone\u00bb text_line_height_tablet=\u00bb1.7em\u00bb text_line_height_phone=\u00bb1.6em\u00bb text_line_height_last_edited=\u00bbon|phone\u00bb global_colors_info=\u00bb{}\u00bb theme_builder_area=\u00bbpost_content\u00bb sticky_enabled=\u00bb0&#8243;]Cuando los f\u00f3siles de Naraoia fueron hallados en el c\u00e9lebre Burgess Shale, su morfolog\u00eda desconcert\u00f3 a los paleont\u00f3logos. Su cuerpo estaba cubierto por un escudo continuo que ocultaba la mayor parte de su anatom\u00eda, lo que dificultaba su clasificaci\u00f3n. Durante a\u00f1os se crey\u00f3 que era un crust\u00e1ceo, ya que difer\u00eda notablemente de los trilobites conocidos. Sin embargo, cuando Harry B. Whittington comenz\u00f3 a diseccionar espec\u00edmenes \u2014Naraoia era uno de los animales m\u00e1s abundantes del yacimiento\u2014 descubri\u00f3 que las patas y branquias eran pr\u00e1cticamente id\u00e9nticas a las de los trilobites. Este hallazgo llev\u00f3 a reclasificar el g\u00e9nero dentro de la clase Trilobita. Durante un tiempo, la especie Misszhouia longicaudata se consider\u00f3 parte de Naraoia bajo el nombre N. longicaudata, hasta que en 1997 se reconoci\u00f3 como un g\u00e9nero distinto.<\/p>\n<p>El cuerpo de Naraoia es extremadamente aplanado dorsoventralmente. La regi\u00f3n dorsal est\u00e1 formada por un escudo cef\u00e1lico ovalado o semicircular no calcificado (cefal\u00f3n) y un escudo caudal (pigidio) m\u00e1s largo que el cefal\u00f3n, sin segmentos corporales intermedios visibles. El cuerpo se estrecha en la articulaci\u00f3n entre ambas regiones. Las antenas, largas y compuestas por numerosos segmentos, se proyectan lateralmente. Naraoia carece de ojos, lo que sugiere un estilo de vida adaptado a ambientes de baja luminosidad o a h\u00e1bitos de madriguera. El sistema digestivo es uno de sus rasgos m\u00e1s distintivos: el intestino ocupa entre el 14 y el 18% del ancho corporal y est\u00e1 acompa\u00f1ado por cuatro pares de grandes sacos digestivos o ciegos. El cefal\u00f3n contiene divert\u00edculos ramificados que ocupan gran parte de su volumen, a diferencia de lo que ocurre en Misszhouia. Los ap\u00e9ndices son birr\u00e1meos, como en los trilobites, con ex\u00f3podos provistos de grandes l\u00f3bulos distales en forma de paleta y cortas ramas laterales aplanadas (setas). El end\u00f3podo, conocido en detalle solo en N. compacta, est\u00e1 formado por seis pod\u00f3meros.<\/p>\n<p>Las especies de Naraoia se han encontrado en Canad\u00e1, Estados Unidos, el sur de China y Australia, en dep\u00f3sitos que abarcan desde el C\u00e1mbrico Inferior (Atdabaniano) hasta el Sil\u00farico Superior (Pridoli). Esta distribuci\u00f3n amplia tanto en tiempo como en espacio demuestra que el g\u00e9nero fue exitoso y persistente, ocupando diversos ambientes marinos durante m\u00e1s de cien millones de a\u00f1os.<\/p>\n<p>Los sedimentos hallados en el interior del intestino de Naraoia sugieren que pudo haber sido un depredador de dep\u00f3sitos, ingiriendo grandes cantidades de sedimento al estilo de una lombriz de tierra. El sistema digestivo, muy grande y complejo, indica que su dieta era pobre en nutrientes, lo que coincide con un estilo de alimentaci\u00f3n basado en la ingesti\u00f3n de detritos o sedimentos org\u00e1nicos. Sin embargo, algunos investigadores han interpretado la morfolog\u00eda digestiva como compatible con la depredaci\u00f3n activa. Los grandes l\u00f3bulos distales de los ex\u00f3podos, las setas lamelares, la orientaci\u00f3n lateral de las antenas y el \u00e1ngulo de hasta 90\u00b0 entre el cefal\u00f3n y el pigidio, observado en muchos ejemplares, sugieren un comportamiento de madriguera, posiblemente desplaz\u00e1ndose bajo el sedimento o removi\u00e9ndolo para alimentarse.<\/p>\n<p>Probablemente todos los naraoidos habitaban los fondos marinos, ya fuera como detrit\u00edvoros, depredadores de peque\u00f1os organismos o excavadores que remov\u00edan el sustrato en busca de alimento. 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custom_margin=\u00bb||10px||false|false\u00bb header_font_size_tablet=\u00bb22px\u00bb header_font_size_phone=\u00bb15px\u00bb header_font_size_last_edited=\u00bbon|tablet\u00bb header_line_height_tablet=\u00bb\u00bb header_line_height_phone=\u00bb1.2em\u00bb header_line_height_last_edited=\u00bbon|phone\u00bb body_font_size_tablet=\u00bb16px\u00bb body_font_size_phone=\u00bb14px\u00bb body_font_size_last_edited=\u00bbon|phone\u00bb body_line_height_tablet=\u00bb1.7em\u00bb body_line_height_phone=\u00bb1.6em\u00bb body_line_height_last_edited=\u00bbon|phone\u00bb header_text_shadow_style=\u00bbpreset1&#8243; global_colors_info=\u00bb{}\u00bb]Paleozoico o tambi\u00e9n era Primaria es una divisi\u00f3n de la escala temporal geol\u00f3gica de m\u00e1s de 290 millones de a\u00f1os de duraci\u00f3n, que se inici\u00f3 hace 542 millones de a\u00f1os. y acab\u00f3 hace unos 251 millones de a\u00f1os.[\/et_pb_blurb][et_pb_button 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_module_preset=\u00bbdefault\u00bb title_level=\u00bbh2&#8243; title_font=\u00bb|600||on|||||\u00bb title_text_align=\u00bbcenter\u00bb title_text_color=\u00bb#000000&#8243; title_font_size=\u00bb30px\u00bb title_letter_spacing=\u00bb1px\u00bb animation_style=\u00bbslide\u00bb animation_direction=\u00bbbottom\u00bb title_font_size_tablet=\u00bb25px\u00bb title_font_size_phone=\u00bb20px\u00bb title_font_size_last_edited=\u00bbon|phone\u00bb title_text_shadow_style=\u00bbpreset1&#8243; global_colors_info=\u00bb{}\u00bb][\/et_pb_post_title][et_pb_divider color=\u00bb#999999&#8243; _builder_version=\u00bb4.27.0&#8243; _module_preset=\u00bbdefault\u00bb custom_margin=\u00bb-20px||0px||false|false\u00bb custom_padding=\u00bb||||false|false\u00bb animation_style=\u00bbslide\u00bb global_colors_info=\u00bb{}\u00bb][\/et_pb_divider][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p><font color=\"#ff6600\"><strong>Walcott, 1912<\/strong><\/font><\/p>\n<p>Las extremidades anteriores del tronco del Naraoia tienen ex\u00f3podos con grandes l\u00f3bulos distales en forma de paleta&#8230;<\/p>\n","protected":false},"author":1,"featured_media":9850,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[18],"tags":[],"class_list":["post-9751","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fauna-del-silurico"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Naraoia | Todos los nara\u00f3idos habitaban los fondos marinos<\/title>\n<meta name=\"description\" content=\"Las extremidades anteriores del tronco del Naraoia tienen ex\u00f3podos con grandes l\u00f3bulos distales en forma de paleta.\" \/>\n<meta name=\"robots\" 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