{"id":9772,"date":"2025-12-03T06:38:59","date_gmt":"2025-12-03T05:38:59","guid":{"rendered":"https:\/\/clientes.munecarusa.com\/mp\/?p=9772"},"modified":"2026-02-21T14:51:54","modified_gmt":"2026-02-21T13:51:54","slug":"hughmilleria","status":"publish","type":"post","link":"https:\/\/clientes.munecarusa.com\/mp\/hughmilleria\/","title":{"rendered":"Hughmilleria"},"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>Sarle, 1903<\/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=\"Hughmilleria\" width=\"30\" height=\"50\" \/><\/h2>\n<p>Hughmilleria es un g\u00e9nero de euript\u00e9ridos, un grupo extinto de artr\u00f3podos acu\u00e1ticos que desempe\u00f1\u00f3 un papel importante en las faunas del Sil\u00farico. Sus f\u00f3siles se han encontrado en yacimientos sil\u00faricos de China y Estados Unidos, lo que demuestra que este g\u00e9nero tuvo una distribuci\u00f3n relativamente amplia en ambientes marginales y de aguas poco profundas. Clasificado dentro de la familia basal Hughmilleriidae, el g\u00e9nero incluye tres especies reconocidas: Hughmilleria shawangunk del este de Estados Unidos, H. socialis de Pittsford, Nueva York, y H. wangi de Hunan, China. El nombre del g\u00e9nero honra al ge\u00f3logo escoc\u00e9s Hugh Miller, uno de los pioneros en el estudio de los euript\u00e9ridos.[\/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\/Hughmilleria.webp\u00bb alt=\u00bbHughmilleria\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 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; 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: Sil\u00farico[\/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;]Sarle, 1903[\/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;]China[\/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;]Hughmilleriidae[\/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; title_font_size_tablet=\u00bb19px\u00bb title_font_size_phone=\u00bb16px\u00bb title_font_size_last_edited=\u00bbon|phone\u00bb percent_font_size_tablet=\u00bb16px\u00bb percent_font_size_phone=\u00bb14px\u00bb percent_font_size_last_edited=\u00bbon|phone\u00bb global_colors_info=\u00bb{}\u00bb theme_builder_area=\u00bbpost_content\u00bb sticky_enabled=\u00bb0&#8243;][et_pb_counter percent=\u00bb14&#8243; _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 bar_background_color_default=\u00bb#ff6600&#8243; use_percentages=\u00bbon\u00bb sticky_enabled=\u00bb0&#8243;]Agresividad[\/et_pb_counter][\/et_pb_counters][et_pb_number_counter title=\u00bbMillones de A\u00f1os\u00bb number=\u00bb445&#8243; 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-silurico\/#volver\u00bb button_text=\u00bbFauna del Sil\u00farico\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 sticky_enabled=\u00bb0&#8243;]La especie tipo, H. socialis, es tambi\u00e9n la especie tipo de la familia Hughmilleriidae, un grupo de euript\u00e9ridos perteneciente a la superfamilia Pterygotioidea. Esta superfamilia se caracteriza por cuerpos aerodin\u00e1micos, quel\u00edceros agrandados de tama\u00f1o medio y la presencia de espinas pareadas en los ap\u00e9ndices locomotores. Aunque Hughmilleria es un g\u00e9nero relativamente peque\u00f1o \u2014el mayor ejemplar conocido alcanza unos 20 cent\u00edmetros de longitud\u2014 comparte varios rasgos con los pterig\u00f3tidos m\u00e1s derivados, como Slimonia acuminata, que pod\u00eda medir hasta un metro, o Pterygotus grandidentatus, que alcanzaba 1,75 metros. A pesar de su tama\u00f1o reducido, Hughmilleria presenta una combinaci\u00f3n de caracter\u00edsticas primitivas y derivadas que lo convierten en el miembro m\u00e1s basal conocido de Pterygotioidea.<\/p>\n<p>El telson de Hughmilleria, lanceolado y estiliforme, recuerda claramente al de Eurypterus, lo que indica que el g\u00e9nero conserva rasgos ancestrales dentro del grupo. Los ojos compuestos marginales, los quel\u00edceros relativamente grandes y el metastoma cordado \u2014una placa abdominal en forma de coraz\u00f3n\u2014 muestran similitudes con Pterygotus, lo que sugiere una relaci\u00f3n evolutiva estrecha. El caparaz\u00f3n era parab\u00f3lico o subcuadrado, con ojos ovalados situados en el margen. Los quel\u00edceros pod\u00edan extenderse m\u00e1s all\u00e1 del borde del caparaz\u00f3n, y los ap\u00e9ndices II\u2013V eran espin\u00edferos, es decir, presentaban espinas pareadas en cada pod\u00f3mero. Aunque compart\u00eda varios rasgos con los pterig\u00f3tidos m\u00e1s avanzados, Hughmilleria carec\u00eda del telson expandido y aplanado que estos utilizaban como tim\u00f3n para nadar, lo que indica que su estilo de vida no depend\u00eda de maniobras r\u00e1pidas en aguas abiertas.<\/p>\n<p>Hughmilleria se distingue de otros miembros de Pterygotioidea por su cuerpo m\u00e1s aerodin\u00e1mico, su prosoma subcuadrado, sus quel\u00edceros de tama\u00f1o medio, su peque\u00f1o tama\u00f1o total y una serie de caracter\u00edsticas que comparte con Eurypterus, lo que refuerza su posici\u00f3n basal dentro de la superfamilia. El g\u00e9nero fue erigido por Clifton J. Sarle en 1903 para contener la especie H. socialis, descubierta en el Miembro Pittsford Shale de la Formaci\u00f3n Vernon, Nueva York. Esta especie es extremadamente abundante en la zona, con unos 450 ejemplares registrados, lo que la convierte en uno de los euript\u00e9ridos mejor representados del Sil\u00farico estadounidense. El nombre gen\u00e9rico deriva de Hugh Miller, quien encontr\u00f3 f\u00f3siles de euript\u00e9ridos en Escocia y contribuy\u00f3 significativamente al conocimiento de estos artr\u00f3podos. Una variedad denominada Hughmilleria socialis var. robusta fue descrita posteriormente, pero hoy se considera sin\u00f3nima de H. socialis.<\/p>\n<p>En 1907 se descubri\u00f3 una segunda especie, H. shawangunk, en la arenisca de Shawangunk en Otisville. Esta especie, m\u00e1s peque\u00f1a que H. socialis, vivi\u00f3 entre las \u00e9pocas de Llandovery y Ludlow. Los ejemplares m\u00e1s grandes alcanzaban unos 12 cent\u00edmetros de longitud y se diferenciaban de la especie tipo por un caparaz\u00f3n m\u00e1s ancho y ojos compuestos m\u00e1s grandes y prominentes, adem\u00e1s de otras diferencias morfol\u00f3gicas.<\/p>\n<p>La historia taxon\u00f3mica de Hughmilleria es compleja. En 1912, Clarke y Ruedemann crearon la familia Pterygotidae para agrupar g\u00e9neros como Pterygotus, Slimonia, Hastimima y Hughmilleria. Sin embargo, en 1951, Erik N. Kjellesvig-Waering reorganiz\u00f3 la familia, trasladando Hastimima, Hughmilleria, Grossopterus y Slimonia a una nueva familia, Hughmilleriidae, dejando a Pterygotus como \u00fanico miembro de Pterygotidae. En 1961, Kjellesvig-Waering dividi\u00f3 Hughmilleria en dos subg\u00e9neros: Hughmilleria (Hughmilleria) y Hughmilleria (Nanahughmilleria), aunque este \u00faltimo ser\u00eda posteriormente elevado a la categor\u00eda de g\u00e9nero independiente.<\/p>\n<p>En 2007 se describi\u00f3 una tercera especie, H. wangi, a partir de un esp\u00e9cimen casi completo encontrado en la Formaci\u00f3n Xiaoxiyu de Hunan, China. Esta especie vivi\u00f3 durante la era Telychian del Sil\u00farico, lo que la convierte en el euript\u00e9rido m\u00e1s antiguo descubierto en China. H. wangi se diferencia de las especies norteamericanas por la presencia de ep\u00edmeros en todo el postabdomen y por un caparaz\u00f3n ligeramente m\u00e1s ancho. Con solo 6 cent\u00edmetros de longitud, es la especie m\u00e1s peque\u00f1a conocida de Hughmilleria y de toda la superfamilia Pterygotioidea.<\/p>\n<p>Existe tambi\u00e9n el caso problem\u00e1tico de H. lanceolata, descrita originalmente por John William Salter como parte del g\u00e9nero Himantopterus, hoy considerado un nombre inv\u00e1lido. Esta especie, de cuerpo alargado y telson lanceolado, ha sido relacionada tanto con Hughmilleria como con Nanahughmilleria, aunque estudios recientes sugieren que podr\u00eda estar m\u00e1s cerca de Eurypteroidea. La ausencia de ojos en todos los ejemplares dificulta su clasificaci\u00f3n definitiva.<\/p>\n<p>Hughmilleria est\u00e1 firmemente clasificada dentro de Hughmilleriidae, una familia basal dentro de Pterygotioidea. Comparte con Herefordopterus un caparaz\u00f3n subtriangular y un telson ancho, as\u00ed como ap\u00e9ndices genitales similares, aunque estos \u00faltimos se asemejan m\u00e1s a los de Slimonia por su divisi\u00f3n en tres segmentos, en contraste con la morfolog\u00eda indivisa de los pterig\u00f3tidos. Sin embargo, Hughmilleria y Herefordopterus se diferencian de los pterig\u00f3tidos y de Slimonia por la presencia de espinas pareadas en los ap\u00e9ndices locomotores. Adem\u00e1s, Hughmilleria posee entre 18 y 20 dientes gnatob\u00e1sicos en el ap\u00e9ndice VI, mientras que Herefordopterus y los pterig\u00f3tidos solo tienen entre 12 y 13, lo que refuerza su posici\u00f3n basal dentro de la superfamilia.<\/p>\n<p>Seg\u00fan Sarle, Hughmilleria era muy similar a Eurypterus y podr\u00eda confundirse con una especie de este g\u00e9nero si no fuera por la posici\u00f3n marginal de los ojos y los quel\u00edceros relativamente grandes. Sin embargo, por su metasoma cordado, la posici\u00f3n de los ojos, los ap\u00e9ndices preorales m\u00e1s largos, las patas natatorias menos desarrolladas y la morfolog\u00eda del op\u00e9rculo, Hughmilleria se asemeja m\u00e1s a Pterygotus.<\/p>\n<p>Los f\u00f3siles de Hughmilleria se encuentran en yacimientos sil\u00faricos de las \u00e9pocas de Llandovery y Ludlow. Junto con sus parientes cercanos, Hughmilleria dominaba las comunidades de agua salobre y dulce, mientras que g\u00e9neros como Pterygotus y Eurypterus dominaban los ambientes marinos. En el Miembro Pittsford Shale, donde se han encontrado numerosos ejemplares de H. socialis, tambi\u00e9n aparecen otros euript\u00e9ridos como Mixopterus multispinosus, Erettoperus osiliensis, Eurypterus pittsfordensis y Carcinosoma spiniferus, adem\u00e1s de crust\u00e1ceos como Ceratiocaris y ostr\u00e1codos como Leperditia. La litolog\u00eda de la formaci\u00f3n \u2014fangolita friable y calc\u00e1rea, dolomita arcillosa y sedimentos t\u00edpicos de ambientes marginales\u2014 sugiere que Hughmilleria viv\u00eda en aguas muy poco profundas, probablemente salobres, en un entorno de transici\u00f3n entre ambientes marinos y continentales.<\/p>\n<p>Hughmilleria, con su mezcla de rasgos primitivos y derivados, su posici\u00f3n basal dentro de Pterygotioidea y su amplia representaci\u00f3n en los yacimientos sil\u00faricos, constituye una pieza clave para comprender la evoluci\u00f3n temprana de los escorpiones marinos y la diversificaci\u00f3n de los grandes depredadores artr\u00f3podos del Paleozoico.[\/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||||false|false\u00bb custom_padding=\u00bb||||false|false\u00bb 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