{"id":17219,"date":"2026-02-21T19:07:04","date_gmt":"2026-02-21T18:07:04","guid":{"rendered":"https:\/\/clientes.munecarusa.com\/mp\/?p=17219"},"modified":"2026-02-21T19:08:30","modified_gmt":"2026-02-21T18:08:30","slug":"laccognathus","status":"publish","type":"post","link":"https:\/\/clientes.munecarusa.com\/mp\/laccognathus\/","title":{"rendered":"Laccognathus"},"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=\u00bb4.27.5&#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=\u00bb4.27.5&#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>Gross, 1941<\/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 admin_label=\u00bbFila\u00bb _builder_version=\u00bb4.27.5&#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=\u00bb4.27.5&#8243; _module_preset=\u00bbdefault\u00bb animation_style=\u00bbzoom\u00bb sticky_limit_top=\u00bbrow\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 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]<\/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=\"Laccognathus\" width=\"30\" height=\"50\" \/><\/h2>\n<p>Laccognathus es un g\u00e9nero extinto de peces de aletas lobuladas que vivi\u00f3 entre el Dev\u00f3nico Medio y el Dev\u00f3nico Tard\u00edo, hace aproximadamente entre 397 y 360 millones de a\u00f1os. Sus f\u00f3siles se han encontrado en Europa y Norteam\u00e9rica, lo que indica que este pez tuvo una amplia distribuci\u00f3n en los ecosistemas acu\u00e1ticos del Dev\u00f3nico. El nombre Laccognathus significa \u201cmand\u00edbula con fosas\u201d, una referencia directa a las tres grandes cavidades presentes en la superficie externa de la mand\u00edbula inferior, un rasgo distintivo del g\u00e9nero que probablemente cumpl\u00eda funciones sensoriales relacionadas con la detecci\u00f3n de vibraciones o movimientos en el agua. Estas fosas mandibulares son tan caracter\u00edsticas que dieron origen al propio nombre del animal, derivado del griego \u201clakkos\u201d (fosa) y \u201cgnathos\u201d (mand\u00edbula).[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=\u00bb2_3,1_3&#8243; admin_label=\u00bbFila\u00bb _builder_version=\u00bb4.27.5&#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=\u00bb4.27.5&#8243; _module_preset=\u00bbdefault\u00bb animation_style=\u00bbzoom\u00bb sticky_limit_top=\u00bbrow\u00bb global_colors_info=\u00bb{}\u00bb][et_pb_image src=\u00bbhttps:\/\/clientes.munecarusa.com\/mp\/wp-content\/uploads\/2026\/02\/Laccognathus.webp\u00bb alt=\u00bbLaccognathus\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=\u00bb4.27.5&#8243; _module_preset=\u00bbdefault\u00bb custom_margin=\u00bb25px||||false|false\u00bb sticky_limit_top=\u00bbcolumn\u00bb sticky_limit_bottom=\u00bbcolumn\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=\u00bb4.27.5&#8243; _module_preset=\u00bbdefault\u00bb custom_margin=\u00bb-20px||||false|false\u00bb sticky_limit_bottom=\u00bbcolumn\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; 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_builder_version=\u00bb4.27.5&#8243; _module_preset=\u00bbdefault\u00bb positioning=\u00bbnone\u00bb animation_style=\u00bbzoom\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|phone\u00bb sticky_limit_bottom=\u00bbcolumn\u00bb 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][et_pb_accordion_item title=\u00bbEra Geol\u00f3gica\u00bb open=\u00bbon\u00bb _builder_version=\u00bb4.27.5&#8243; _module_preset=\u00bbdefault\u00bb global_colors_info=\u00bb{}\u00bb]Era: Paleozoica<br \/>\nPeriodo: Dev\u00f3nico[\/et_pb_accordion_item][et_pb_accordion_item title=\u00bbDescubridor\u00bb _builder_version=\u00bb4.27.5&#8243; _module_preset=\u00bbdefault\u00bb global_colors_info=\u00bb{}\u00bb]Gross, 1941[\/et_pb_accordion_item][et_pb_accordion_item title=\u00bbOrigen\u00bb _builder_version=\u00bb4.27.5&#8243; _module_preset=\u00bbdefault\u00bb global_colors_info=\u00bb{}\u00bb]Canad\u00e1[\/et_pb_accordion_item][et_pb_accordion_item title=\u00bbGrupo\u00bb _builder_version=\u00bb4.27.5&#8243; _module_preset=\u00bbdefault\u00bb global_colors_info=\u00bb{}\u00bb]Pez[\/et_pb_accordion_item][et_pb_accordion_item title=\u00bbFamilia\u00bb _builder_version=\u00bb4.27.5&#8243; _module_preset=\u00bbdefault\u00bb global_colors_info=\u00bb{}\u00bb]Holoptychiidae[\/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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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 global_colors_info=\u00bb{}\u00bb][et_pb_column type=\u00bb4_4&#8243; _builder_version=\u00bb4.27.5&#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 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]Laccognathus pertenec\u00eda al orden Porolepiformes, un grupo de sarcopterigios cercanos al linaje que acabar\u00eda dando lugar a los tetr\u00e1podos. Aunque no est\u00e1 directamente en la l\u00ednea evolutiva que conduce a los vertebrados terrestres, s\u00ed comparte con ellos una serie de rasgos anat\u00f3micos que lo convierten en un pez de gran inter\u00e9s cient\u00edfico. Su cuerpo robusto, su cr\u00e1neo macizo y sus aletas lobuladas indican que era un nadador poderoso, capaz de maniobrar en aguas poco profundas y posiblemente de apoyarse en el fondo mediante sus aletas, lo que sugiere un estilo de vida parcialmente anfibio. La longitud de Laccognathus variaba entre uno y dos metros, lo que lo situaba entre los peces de mayor tama\u00f1o dentro de los sarcopterigios dev\u00f3nicos. <\/p>\n<p>El cr\u00e1neo de Laccognathus es uno de los elementos m\u00e1s estudiados del g\u00e9nero. Presentaba una estructura pesada y compacta, con huesos ornamentados y una mand\u00edbula inferior especialmente desarrollada. Las tres fosas mandibulares, situadas en la superficie externa de la mand\u00edbula, son interpretadas como parte de un sistema sensorial que habr\u00eda permitido al pez detectar presas enterradas o movimientos en el sustrato. Este tipo de adaptaci\u00f3n es com\u00fan en depredadores bent\u00f3nicos, lo que sugiere que Laccognathus pasaba gran parte de su tiempo cerca del fondo, acechando presas como peces peque\u00f1os, artr\u00f3podos y otros invertebrados. Su dentici\u00f3n, aunque no tan especializada como la de otros sarcopterigios, era adecuada para sujetar y triturar presas de consistencia variable.<\/p>\n<p>Los f\u00f3siles de Laccognathus muestran que este pez pose\u00eda un cuerpo alargado y musculoso, con aletas pares lobuladas que conten\u00edan un esqueleto interno complejo. Estas aletas, precursoras de las extremidades de los tetr\u00e1podos, permit\u00edan movimientos m\u00e1s vers\u00e1tiles que las aletas radiadas de los peces actinopterigios. Aunque Laccognathus no estaba adaptado para salir del agua, su anatom\u00eda demuestra que los sarcopterigios del Dev\u00f3nico ya estaban experimentando con estructuras que m\u00e1s tarde ser\u00edan fundamentales para la locomoci\u00f3n terrestre. Su piel estaba cubierta por escamas cosmoideas, t\u00edpicas de los peces de aletas lobuladas, formadas por capas de dentina y esmalte que ofrec\u00edan protecci\u00f3n adicional.<\/p>\n<p>La distribuci\u00f3n geogr\u00e1fica de Laccognathus es notable. Se han encontrado especies en regiones que hoy corresponden a Letonia, Estonia, Rusia, Canad\u00e1 y Estados Unidos. Esta amplia dispersi\u00f3n indica que el g\u00e9nero fue exitoso y capaz de adaptarse a distintos ambientes acu\u00e1ticos, desde lagos y r\u00edos hasta zonas costeras. La presencia de especies en el \u00c1rtico canadiense, como las descubiertas en la isla de Ellesmere, demuestra que durante el Dev\u00f3nico estas regiones ten\u00edan climas templados y ecosistemas ricos en peces de aletas lobuladas. <\/p>\n<p>Laccognathus forma parte de la familia Holoptychiidae, un grupo de peces sarcopterigios caracterizados por cuerpos robustos y cr\u00e1neos ornamentados. Aunque no es tan famoso como otros sarcopterigios del Dev\u00f3nico, como Eusthenopteron o Tiktaalik, su importancia radica en que representa una rama paralela de la evoluci\u00f3n de los peces de aletas lobuladas, mostrando c\u00f3mo distintos linajes desarrollaron adaptaciones similares para la vida en aguas poco profundas. Su anatom\u00eda demuestra que la diversidad de formas y estilos de vida entre los sarcopterigios era mucho mayor de lo que se pensaba, y que la transici\u00f3n hacia la vida terrestre no fue un proceso lineal, sino un mosaico de experimentos evolutivos.<\/p>\n<p>En conjunto, Laccognathus es un ejemplo extraordinario de la diversidad de peces de aletas lobuladas del Dev\u00f3nico. Su cr\u00e1neo \u00fanico, su tama\u00f1o considerable, su amplia distribuci\u00f3n y su posible comportamiento anfibio lo convierten en un f\u00f3sil clave para comprender la evoluci\u00f3n temprana de los sarcopterigios. 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1941<\/strong><\/font><\/p>\n<p>Laccognathus fue un pez de aletas lobuladas, robusto y anfibio, con un cr\u00e1neo \u00fanico y gran importancia evolutiva&#8230;<\/p>\n","protected":false},"author":1,"featured_media":17222,"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":[19],"tags":[],"class_list":["post-17219","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fauna-del-devonico"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Laccognathus | El pez de aletas lobuladas que domin\u00f3 el Dev\u00f3nico<\/title>\n<meta name=\"description\" content=\"Laccognathus fue un pez de aletas lobuladas, robusto y anfibio, con un cr\u00e1neo \u00fanico y gran importancia evolutiva.\" \/>\n<meta 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