{"id":9326,"date":"2025-11-26T14:33:21","date_gmt":"2025-11-26T13:33:21","guid":{"rendered":"https:\/\/clientes.munecarusa.com\/mp\/?p=9326"},"modified":"2026-02-18T14:46:56","modified_gmt":"2026-02-18T13:46:56","slug":"radiodonta","status":"publish","type":"post","link":"https:\/\/clientes.munecarusa.com\/mp\/radiodonta\/","title":{"rendered":"Radiodonta"},"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; background_size=\u00bbinitial\u00bb background_position=\u00bbtop_left\u00bb background_repeat=\u00bbrepeat\u00bb custom_margin=\u00bb||||false|false\u00bb custom_padding=\u00bb||0px||false|false\u00bb custom_padding_tablet=\u00bb||0px||false|false\u00bb custom_padding_phone=\u00bb||10px||false|false\u00bb global_colors_info=\u00bb{}\u00bb][et_pb_column type=\u00bb4_4&#8243; _builder_version=\u00bb4.16&#8243; custom_padding=\u00bb|||\u00bb global_colors_info=\u00bb{}\u00bb custom_padding__hover=\u00bb|||\u00bb][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=\u00bb70px\u00bb title_letter_spacing=\u00bb1px\u00bb custom_margin=\u00bb||10px||false|false\u00bb animation_style=\u00bbslide\u00bb animation_direction=\u00bbbottom\u00bb title_font_size_tablet=\u00bb50px\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_text content_last_edited=\u00bboff|phone\u00bb _builder_version=\u00bb4.27.4&#8243; header_4_font=\u00bb|700||on|||||\u00bb header_4_text_align=\u00bbcenter\u00bb header_4_text_color=\u00bb#ff6600&#8243; header_4_font_size=\u00bb30px\u00bb header_4_line_height=\u00bb1.4em\u00bb background_size=\u00bbinitial\u00bb background_position=\u00bbtop_left\u00bb background_repeat=\u00bbrepeat\u00bb text_orientation=\u00bbjustified\u00bb animation_style=\u00bbzoom\u00bb text_font_size_last_edited=\u00bboff|phone\u00bb text_line_height_last_edited=\u00bboff|phone\u00bb header_4_font_size_tablet=\u00bb22px\u00bb header_4_font_size_phone=\u00bb11px\u00bb header_4_font_size_last_edited=\u00bbon|phone\u00bb header_4_text_shadow_style=\u00bbpreset1&#8243; global_colors_info=\u00bb{}\u00bb header_4_text_color__hover_enabled=\u00bboff|hover\u00bb text_text_color__hover_enabled=\u00bboff|desktop\u00bb]<\/p>\n<h4>Collins, 1996<\/h4>\n<p>[\/et_pb_text][et_pb_divider color=\u00bb#999999&#8243; 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=\"Radiodonta\" width=\"30\" height=\"50\" \/><\/h2>\n<p>Radiodonta es un orden extinto de artr\u00f3podos troncales que alcanz\u00f3 un \u00e9xito extraordinario en los mares del C\u00e1mbrico y que continu\u00f3, con representantes aislados, en el Ordov\u00edcico y el Dev\u00f3nico. Radiodonta es uno de los grupos m\u00e1s emblem\u00e1ticos de la explosi\u00f3n c\u00e1mbrica, y su diversidad morfol\u00f3gica y ecol\u00f3gica lo convierte en una pieza clave para comprender la evoluci\u00f3n temprana de los artr\u00f3podos. En espa\u00f1ol se prefiere el t\u00e9rmino radiodontos, mientras que en la literatura cient\u00edfica en ingl\u00e9s se utilizan denominaciones como radiodonts, radiodontans, radiodontids, anomalocarids o anomalocaridids, aunque estos dos \u00faltimos se refer\u00edan originalmente solo a la familia Anomalocarididae, que en el pasado inclu\u00eda a todas las especies de Radiodonta pero que hoy se limita a unas pocas.[\/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\/11\/Radiodonta.webp\u00bb alt=\u00bbRadiodonta\u00bb show_in_lightbox=\u00bbon\u00bb use_overlay=\u00bbon\u00bb overlay_icon_color=\u00bb#ff6600&#8243; hover_overlay_color=\u00bbrgba(255,102,0,0.2)\u00bb align=\u00bbcenter\u00bb force_fullwidth=\u00bbon\u00bb _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb custom_margin=\u00bb25px||||false|false\u00bb global_colors_info=\u00bb{}\u00bb][\/et_pb_image][et_pb_code disabled_on=\u00bboff|off|off\u00bb admin_label=\u00bbMe gusta\u00bb _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb custom_margin=\u00bb-20px||||false|false\u00bb global_colors_info=\u00bb{}\u00bb]<div class=\"et_social_networks et_social_1col et_social_slide et_social_rectangle et_social_left et_social_withcounts et_social_shortcode_0 et_social_mobile_on et_social_withnetworknames et_social_outer_dark\">\n\t\t\t\t\t<style type=\"text\/css\">.et_monarch .et_social_shortcode_0 li,.et_monarch .et_social_shortcode_0.et_social_circle ul li i.et_social_icon { background: #ff0000; } .et_monarch .et_social_shortcode_0.et_social_rounded .et_social_icons_container li:hover, .et_monarch .et_social_shortcode_0.et_social_rectangle .et_social_icons_container li:hover, .et_monarch .et_social_shortcode_0.et_social_circle .et_social_icons_container li:hover i.et_social_icon { background: #660000 !important; } .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 ORDOV\u00cdCICO<\/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 global_colors_info=\u00bb{}\u00bb theme_builder_area=\u00bbpost_content\u00bb open=\u00bboff\u00bb]Canad\u00e1[\/et_pb_accordion_item][et_pb_accordion_item title=\u00bbGrupo\u00bb _builder_version=\u00bb4.27.2&#8243; _module_preset=\u00bbdefault\u00bb global_colors_info=\u00bb{}\u00bb theme_builder_area=\u00bbpost_content\u00bb open=\u00bboff\u00bb]Invertebrado[\/et_pb_accordion_item][et_pb_accordion_item title=\u00bbFamilia\u00bb _builder_version=\u00bb4.27.5&#8243; _module_preset=\u00bbdefault\u00bb hover_enabled=\u00bb0&#8243; global_colors_info=\u00bb{}\u00bb theme_builder_area=\u00bbpost_content\u00bb open=\u00bboff\u00bb sticky_enabled=\u00bb0&#8243;]Anomalocarididae[\/et_pb_accordion_item][\/et_pb_accordion][et_pb_counters bar_bg_color=\u00bb#ff6600&#8243; _builder_version=\u00bb4.27.5&#8243; _module_preset=\u00bbdefault\u00bb title_font=\u00bb|700|||||||\u00bb title_text_color=\u00bb#000000&#8243; title_font_size=\u00bb22px\u00bb title_letter_spacing=\u00bb1px\u00bb percent_font=\u00bb|600|||||||\u00bb percent_text_color=\u00bb#FFFFFF\u00bb percent_font_size=\u00bb18px\u00bb percent_letter_spacing=\u00bb1px\u00bb custom_padding=\u00bb15px||15px||true|false\u00bb hover_enabled=\u00bb0&#8243; 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button_bg_enable_color__hover=\u00bbon\u00bb][\/et_pb_button][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00bb4.27.5&#8243; _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 sticky_enabled=\u00bb0&#8243;]Radiodonta se distingue principalmente por sus ap\u00e9ndices frontales altamente especializados, estructuras segmentadas y esclerotizadas que variaban enormemente entre especies y que desempe\u00f1aban funciones diversas: captura de presas, tamizado de sedimentos o filtraci\u00f3n de part\u00edculas. Radiodonta incluye a los primeros grandes depredadores conocidos del registro f\u00f3sil, como Anomalocaris canadensis, pero tambi\u00e9n a filtradores gigantes como Aegirocassis benmoulai y a tamizadores de sedimentos como Hurdia victoria o Peytoia nathorsti. La palabra Radiodonta proviene del lat\u00edn radius (\u201crayo\u201d, en referencia a la forma radial de las placas dentales) y del griego odo\u00fas (\u201cdiente\u201d), aludiendo a la disposici\u00f3n radial del cono oral que rodea la boca, aunque esta estructura no est\u00e1 presente en todas las especies de Radiodonta.<\/p>\n<p>El diagn\u00f3stico original formulado en 1996, describe a los radiodontos como artr\u00f3podos alargados, con simetr\u00eda bilateral y cut\u00edcula no mineralizada, m\u00e1s robusta en las mand\u00edbulas y garras. Radiodonta presenta un cuerpo dividido en dos tagmas: una regi\u00f3n cef\u00e1lica sin segmentaci\u00f3n externa, con un par de ap\u00e9ndices frontales preorales, ojos prominentes y un cono oral ventral con dientes radiales; y un tronco metam\u00e9rico con alrededor de 13 segmentos, cada uno con l\u00f3bulos laterales natatorios y estructuras branquiales. El tronco de Radiodonta pod\u00eda terminar en una cola prominente de tres partes. Algunas especies de Radiodonta pose\u00edan extremidades troncales gnatob\u00e1sicas, lo que sugiere una diversidad funcional notable.<\/p>\n<p>En 2014 fue definido filogen\u00e9ticamente como el clado que incluye cualquier tax\u00f3n m\u00e1s cercano a Anomalocaris canadensis que a Paralithodes camtschaticus. En 2019 se redefini\u00f3 morfol\u00f3gicamente como animales con un complejo cef\u00e1lico compuesto por un elemento central H y dos elementos laterales P, ap\u00e9ndices frontales con enditos provistos de espinas auxiliares, aletas anteriores reducidas o bandas de laminillas setales y un tronco que se estrecha marcadamente desde el cuello hasta la cola. Radiodonta incluye especies que alcanzaban longitudes t\u00edpicas de 30 a 50 cent\u00edmetros, aunque el radiodonto m\u00e1s grande conocido es Aegirocassis benmoulai, del Ordov\u00edcico, que pod\u00eda superar los dos metros. En el extremo opuesto, un juvenil de Lyrarapax unguispinus med\u00eda solo 18 mil\u00edmetros, lo que demuestra la enorme variabilidad de tama\u00f1o dentro de Radiodonta.<\/p>\n<p>El cuerpo se divide en cabeza y tronco. La cabeza de Radiodonta consiste en un \u00fanico segmento corporal, el somito ocular, cubierto por un complejo de escleritos cef\u00e1licos formado por un elemento H central y dos elementos P laterales. Radiodonta pose\u00eda ap\u00e9ndices frontales articulados y esclerotizados, con enditos ventrales provistos de espinas auxiliares, cuya morfolog\u00eda variaba entre especies y constituye uno de los rasgos m\u00e1s importantes para su identificaci\u00f3n. La boca de Radiodonta se situaba ventralmente y estaba rodeada por un cono oral formado por placas dentales radiales, que pod\u00edan presentar simetr\u00eda trirradiada o tetrarradiada seg\u00fan el g\u00e9nero. En algunos h\u00fardidos, Radiodonta presentaba filas adicionales de placas dentales internas.<\/p>\n<p>Los escleritos cef\u00e1licos de Radiodonta variaban seg\u00fan la familia: peque\u00f1os y ovoides en anomalocar\u00eddidos y amplectobel\u00faidos, pero grandes y robustos en h\u00fardidos, reflejando diferencias en estilo de vida y locomoci\u00f3n. Radiodonta pose\u00eda dos ojos compuestos pedunculados situados entre las regiones posteriores de los elementos H y P, lo que sugiere una visi\u00f3n bien desarrollada.<\/p>\n<p>El tronco de Radiodonta estaba formado por numerosos segmentos que se estrechaban hacia la cola. Cada segmento llevaba un par de l\u00f3bulos ventrales natatorios, ligeramente superpuestos, y en algunas especies un conjunto adicional de l\u00f3bulos dorsales. Estas aletas pod\u00edan presentar estructuras internas como \u201crayas de refuerzo\u201d o \u201cvarillas transversales\u201d. En la regi\u00f3n del cuello, Radiodonta ten\u00eda aletas reducidas, y en algunos h\u00fardidos aparec\u00edan estructuras similares a gnatobases utilizadas para manipular alimento. Sobre la superficie dorsal de cada segmento, Radiodonta presentaba bandas de laminillas setales, interpretadas como branquias. El tronco pod\u00eda terminar en un abanico caudal compuesto por l\u00e1minas, cercos largos o una estructura terminal roma.<\/p>\n<p>En algunos f\u00f3siles de Radiodonta se han preservado m\u00fasculos, sistema digestivo y sistema nervioso. Radiodonta pose\u00eda m\u00fasculos laterales bien desarrollados conectados a los l\u00f3bulos ventrales, un sistema digestivo con un intestino anterior y posterior ensanchados y un intestino medio con seis pares de gl\u00e1ndulas digestivas. El cerebro de Radiodonta estaba compuesto por un \u00fanico protocerebro, del que surg\u00edan los nervios de los ap\u00e9ndices frontales y de los ojos. Detr\u00e1s del cerebro, Radiodonta ten\u00eda un par de cordones nerviosos ventrales no fusionados.<\/p>\n<p>Radiodonta era un nadador activo, con aletas ventrales musculosas que generaban un movimiento ondulante similar al de rayas y sepias modernas. Los l\u00f3bulos dorsales y el abanico caudal ayudaban a dirigir y estabilizar la locomoci\u00f3n. Algunas especies de Radiodonta, como Cambroraster, ten\u00edan adaptaciones para un estilo de vida nectobent\u00f3nico, con escleritos cef\u00e1licos en forma de c\u00fapula que recuerdan al caparaz\u00f3n de un cangrejo herradura.<\/p>\n<p>Radiodonta desarroll\u00f3 estrategias de alimentaci\u00f3n muy diversas. Los depredadores raptoriales como Anomalocaris y los amplectobel\u00faidos utilizaban sus ap\u00e9ndices frontales para capturar presas \u00e1giles. Los tamizadores de sedimentos como Hurdia y Peytoia ten\u00edan enditos dentados que formaban una cesta para rastrillar el fondo marino. Los filtradores como Tamisiocaris y Aegirocassis pose\u00edan espinas auxiliares densas y flexibles capaces de filtrar part\u00edculas de hasta 0,5 mm. Otros radiodontos, como Caryosyntrips, ten\u00edan ap\u00e9ndices frontales con superficies opuestas que funcionaban como tijeras para cortar presas.<\/p>\n<p>Los conos orales de Radiodonta tambi\u00e9n variaban seg\u00fan la dieta: conos trirradiados peque\u00f1os para presas nect\u00f3nicas en Anomalocaris, y conos tetrarradiados grandes para presas bent\u00f3nicas en Hurdia y Peytoia. Esta diversidad refleja la extraordinaria radiaci\u00f3n adaptativa de Radiodonta.<\/p>\n<p>Los an\u00e1lisis filogen\u00e9ticos sit\u00faan a Radiodonta, junto con los opab\u00ednidos, como artr\u00f3podos de tallo en la base de los deuter\u00f3podos, un clado que incluye a los euartr\u00f3podos y a otros artr\u00f3podos de tallo superior. Radiodonta comparte con estos grupos rasgos como ojos compuestos pedunculados, gl\u00e1ndulas digestivas y ap\u00e9ndices troncales formados por elementos dorsales y ventrales. Radiodonta se diferencia de los opab\u00ednidos por poseer ap\u00e9ndices frontales articulados y un esclerito dorsal similar al de los euartr\u00f3podos.<\/p>\n<p>Los taxones m\u00e1s cercanos a Radiodonta son los \u201clob\u00f3podos con branquias\u201d, como Pambdelurion y Kerygmachela, que comparten l\u00f3bulos laterales, gl\u00e1ndulas digestivas y ap\u00e9ndices frontales protocerebrales, aunque sin artropodizaci\u00f3n. M\u00e1s basales a\u00fan son los lob\u00f3podos sib\u00e9ridos como Megadictyon y Jianshanopodia. Estos grupos intermedios muestran c\u00f3mo Radiodonta surgi\u00f3 de un linaje de lob\u00f3podos parafil\u00e9ticos dentro del grupo total Arthropoda.<\/p>\n<p>Radiodonta fue tradicionalmente incluido en una sola familia, Anomalocarididae, pero desde 2014 se reconocen cuatro familias: Anomalocarididae, Amplectobeluidae, Tamisiocarididae y Hurdiidae. La monofilia de Hurdiidae est\u00e1 bien apoyada, mientras que la de Amplectobeluidae es m\u00e1s incierta. 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