{"id":9243,"date":"2025-11-26T12:35:38","date_gmt":"2025-11-26T11:35:38","guid":{"rendered":"https:\/\/clientes.munecarusa.com\/mp\/?p=9243"},"modified":"2026-02-18T14:17:26","modified_gmt":"2026-02-18T13:17:26","slug":"astraspis","status":"publish","type":"post","link":"https:\/\/clientes.munecarusa.com\/mp\/astraspis\/","title":{"rendered":"Astraspis"},"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>Walcott, 1892<\/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=\"Astraspis\" width=\"30\" height=\"50\" \/><\/h2>\n<p>Astraspis, cuyo nombre significa literalmente \u201cescudo estrellado\u201d, es un g\u00e9nero extinto de peces primitivos sin mand\u00edbulas que vivi\u00f3 durante el Ordov\u00edcico, en una \u00e9poca en la que los vertebrados comenzaban a diversificarse lentamente en los mares del planeta. Astraspis es la \u00fanica representante del grupo Astraspida, lo que convierte a este g\u00e9nero en un linaje aislado y evolutivamente singular dentro de los primeros agnatos. Los f\u00f3siles de Astraspis han sido encontrados en diversas regiones de Estados Unidos \u2014incluyendo Colorado, Arizona, Oklahoma y Wyoming\u2014, as\u00ed como en Quebec (Canad\u00e1) y en Bolivia, seg\u00fan los estudios de Gagnier (1993).[\/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\/Astraspis.webp\u00bb alt=\u00bbAstraspis\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; toggle_font_size_tablet=\u00bb19px\u00bb toggle_font_size_phone=\u00bb16px\u00bb toggle_font_size_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 global_colors_info=\u00bb{}\u00bb theme_builder_area=\u00bbpost_content\u00bb sticky_enabled=\u00bb0&#8243;][et_pb_accordion_item title=\u00bbEra Geol\u00f3gica\u00bb open=\u00bbon\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 sticky_enabled=\u00bb0&#8243;]Era: Paleozoica<br \/>\nPeriodo: Ordov\u00edcico[\/et_pb_accordion_item][et_pb_accordion_item title=\u00bbDescubridor\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;]Walcott, 1892[\/et_pb_accordion_item][et_pb_accordion_item title=\u00bbOrigen\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;]Estados Unidos[\/et_pb_accordion_item][et_pb_accordion_item title=\u00bbGrupo\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;]Vertebrado[\/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;]Astraspididae[\/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; 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percent_sign=\u00bboff\u00bb _builder_version=\u00bb4.27.5&#8243; _module_preset=\u00bbdefault\u00bb title_font=\u00bb|700|||||||\u00bb title_text_align=\u00bbcenter\u00bb title_text_color=\u00bb#FFFFFF\u00bb title_font_size=\u00bb22px\u00bb title_letter_spacing=\u00bb1px\u00bb number_font=\u00bb|700|||||||\u00bb number_text_color=\u00bb#FFFFFF\u00bb number_font_size=\u00bb80px\u00bb number_letter_spacing=\u00bb1px\u00bb number_line_height=\u00bb100px\u00bb background_color=\u00bb#ff6600&#8243; hover_enabled=\u00bb0&#8243; title_font_size_tablet=\u00bb19px\u00bb title_font_size_phone=\u00bb16px\u00bb title_font_size_last_edited=\u00bbon|phone\u00bb number_font_size_tablet=\u00bb70px\u00bb number_font_size_phone=\u00bb60px\u00bb number_font_size_last_edited=\u00bbon|phone\u00bb global_colors_info=\u00bb{}\u00bb theme_builder_area=\u00bbpost_content\u00bb sticky_enabled=\u00bb0&#8243;][\/et_pb_number_counter][et_pb_button button_url=\u00bbhttps:\/\/clientes.munecarusa.com\/mp\/fauna-ordovicico\/#volver\u00bb button_text=\u00bbFauna del Ordov\u00edcico\u00bb button_alignment=\u00bbleft\u00bb _builder_version=\u00bb4.27.4&#8243; _module_preset=\u00bbdefault\u00bb custom_button=\u00bbon\u00bb button_text_size=\u00bb22px\u00bb button_text_color=\u00bb#FFFFFF\u00bb button_bg_color=\u00bb#ff6600&#8243; button_border_radius=\u00bb0px\u00bb button_font=\u00bb|700|||||||\u00bb button_icon=\u00bb&#x24;||divi||400&#8243; custom_margin=\u00bb0px||||false|false\u00bb custom_padding=\u00bb15px||15px||true|false\u00bb button_text_size_tablet=\u00bb19px\u00bb button_text_size_phone=\u00bb16px\u00bb button_text_size_last_edited=\u00bbon|phone\u00bb button_icon_last_edited=\u00bboff|desktop\u00bb button_on_hover_phone=\u00bbon\u00bb button_on_hover_last_edited=\u00bboff|phone\u00bb custom_css_main_element=\u00bbwidth:100%;\u00bb global_colors_info=\u00bb{}\u00bb button_text_color__hover_enabled=\u00bboff|desktop\u00bb button_bg_color__hover_enabled=\u00bbon|hover\u00bb button_bg_color__hover=\u00bb#660000&#8243; 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 theme_builder_area=\u00bbpost_content\u00bb sticky_enabled=\u00bb0&#8243;]Esta amplia distribuci\u00f3n geogr\u00e1fica indica que Astraspis fue un pez relativamente exitoso dentro de los ecosistemas ordov\u00edcicos. Astraspis est\u00e1 estrechamente relacionado con otros peces del Ordov\u00edcico, como Sacabambaspis de Sudam\u00e9rica y Arandaspis de Australia, formando un conjunto de vertebrados primitivos que comparten caracter\u00edsticas anat\u00f3micas fundamentales.<\/p>\n<p>Astraspis alcanzaba aproximadamente 200 mil\u00edmetros de longitud, lo que lo convierte en un pez peque\u00f1o, pero su importancia evolutiva es considerable. Astraspis pose\u00eda una cola m\u00f3vil cubierta por peque\u00f1as placas \u00f3seas u osteodermos de menos de un mil\u00edmetro, mientras que la regi\u00f3n cef\u00e1lica estaba protegida por placas mucho mayores, de m\u00e1s de dos mil\u00edmetros de grosor. Esta combinaci\u00f3n de placas peque\u00f1as y grandes formaba un escudo protector caracter\u00edstico de Astraspis, que habr\u00eda servido tanto para defensa como para proporcionar rigidez estructural al cuerpo. Un esp\u00e9cimen de Astraspis procedente de Am\u00e9rica del Norte, descrito por Sansom et al. en 1997, mostraba ojos relativamente grandes situados lateralmente, lo que sugiere que Astraspis depend\u00eda de la visi\u00f3n para orientarse en su entorno. Adem\u00e1s, este ejemplar presentaba una serie de ocho aberturas branquiales a cada lado, una caracter\u00edstica notable que indica un sistema respiratorio segmentado y primitivo.<\/p>\n<p>El cuerpo de Astraspis ten\u00eda una forma ovalada en vista transversal, lo que le confer\u00eda un perfil hidrodin\u00e1mico adecuado para desplazarse lentamente por el agua. Las placas \u00f3seas que recubr\u00edan estaban compuestas de aspidina, un tejido mineralizado qu\u00edmicamente similar al de los dientes de los tiburones actuales. Sobre estas placas se encontraban tub\u00e9rculos compuestos de dentina, muchos de los cuales ten\u00edan forma de estrella. Es precisamente por estos tub\u00e9rculos estrellados que Astraspis recibe su nombre, ya que su cabeza y parte del cuerpo estaban decorados con un patr\u00f3n de peque\u00f1as \u201cestrellas\u201d \u00f3seas que le daban un aspecto distintivo y f\u00e1cilmente reconocible.<\/p>\n<p>Astraspis ha tenido presencia en la cultura popular cient\u00edfica. En la miniserie de la BBC Sea Monsters (2003), derivada de la conocida Walking with Dinosaurs, Astraspis aparece brevemente cuando Nigel Marven utiliza un ejemplar muerto de Astraspis como se\u00f1uelo para atraer a un Megalograptus. La criatura tambi\u00e9n es identificada en el libro basado en la serie. Adem\u00e1s, Astraspis fue representado en la serie Animal Armageddon de Animal Planet, lo que demuestra que, a pesar de su tama\u00f1o modesto, Astraspis ha capturado la atenci\u00f3n del p\u00fablico como uno de los primeros vertebrados armados de la historia.<\/p>\n<p>Astraspis, con su cuerpo acorazado, su ausencia de mand\u00edbulas, sus m\u00faltiples aberturas branquiales y su ornamentaci\u00f3n estrellada, representa un paso crucial en la evoluci\u00f3n de los vertebrados. Su anatom\u00eda muestra c\u00f3mo los primeros peces comenzaron a desarrollar estructuras protectoras y sistemas respiratorios m\u00e1s complejos, sentando las bases para la evoluci\u00f3n posterior de los vertebrados mandibulados. 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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 button_url=\u00bbhttps:\/\/clientes.munecarusa.com\/mp\/era-paleozoica\/\u00bb button_text=\u00bbLeer M\u00e1s&#8230;\u00bb 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tiburones&#8230;<\/p>\n","protected":false},"author":1,"featured_media":9412,"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":[17],"tags":[],"class_list":["post-9243","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fauna-del-ordovicio"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Astraspis | Medir\u00eda cerca de 200 mil\u00edmetros de longitud<\/title>\n<meta name=\"description\" content=\"Las placas \u00f3seas que cubr\u00edan el Astraspis estaban compuestas de aspidina similar a los dientes de los actuales tiburones.\" \/>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" 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