{"id":9763,"date":"2025-12-02T19:20:25","date_gmt":"2025-12-02T18:20:25","guid":{"rendered":"https:\/\/clientes.munecarusa.com\/mp\/?p=9763"},"modified":"2026-02-21T14:47:54","modified_gmt":"2026-02-21T13:47:54","slug":"nanahughmilleria","status":"publish","type":"post","link":"https:\/\/clientes.munecarusa.com\/mp\/nanahughmilleria\/","title":{"rendered":"Nanahughmilleria"},"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>Kjellesvig, 1961<\/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=\"Nanahughmilleria\" width=\"30\" height=\"50\" \/><\/h2>\n<p>Nanahughmilleria es un g\u00e9nero de euript\u00e9ridos \u2014los c\u00e9lebres \u201cescorpiones marinos\u201d\u2014 perteneciente a un linaje extinto de artr\u00f3podos acu\u00e1ticos que vivi\u00f3 entre el Sil\u00farico y el Dev\u00f3nico en regiones que hoy corresponden a Estados Unidos, Noruega, Rusia, Inglaterra y Escocia. Su nombre, que significa literalmente \u201cHughmilleria enana\u201d, refleja tanto su peque\u00f1o tama\u00f1o como su estrecha relaci\u00f3n con el g\u00e9nero Hughmilleria, del que originalmente fue considerado un subg\u00e9nero.[\/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\/Nanahughmilleria.webp\u00bb alt=\u00bbNanahughmilleria\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 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: Sil\u00farico[\/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 open=\u00bboff\u00bb]Kjellesvig, 1961[\/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 open=\u00bboff\u00bb]Rusia[\/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 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 global_colors_info=\u00bb{}\u00bb open=\u00bboff\u00bb]Adelophthalmidae[\/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 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][et_pb_counter percent=\u00bb13&#8243; _builder_version=\u00bb4.27.5&#8243; _module_preset=\u00bbdefault\u00bb global_colors_info=\u00bb{}\u00bb bar_background_color_default=\u00bb#ff6600&#8243; use_percentages=\u00bbon\u00bb]Agresividad[\/et_pb_counter][\/et_pb_counters][et_pb_number_counter title=\u00bbMillones de A\u00f1os\u00bb number=\u00bb435&#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; 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][\/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 global_colors_info=\u00bb{}\u00bb][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;]Nanahughmilleria forma parte de la familia Adelophthalmidae, el \u00fanico clado de la superfamilia Adelophthalmoidea, un grupo caracterizado por su peque\u00f1o tama\u00f1o, caparazones parab\u00f3licos en forma de U, ep\u00edmeros laterales en el s\u00e9ptimo segmento y un conjunto de rasgos anat\u00f3micos que los distinguen de otros euript\u00e9ridos m\u00e1s derivados. Dentro de este marco, Nanahughmilleria destaca por la presencia de un mayor n\u00famero de espinas en sus ap\u00e9ndices y por una morfolog\u00eda genital particular que lo separa de sus parientes m\u00e1s avanzados.<\/p>\n<p>El tama\u00f1o de Nanahughmilleria era reducido incluso para los est\u00e1ndares de los adeloft\u00e1lmidos. La especie m\u00e1s grande asignada con seguridad al g\u00e9nero, N. norvegica, alcanzaba apenas los 10 cent\u00edmetros, mientras que la m\u00e1s peque\u00f1a, N. clarkei, no superaba los 4 cent\u00edmetros. Otras especies como N. notosibirica llegaban a los 9 cent\u00edmetros, y N. pygmaea alcanzaba los 8. Aunque N. lanceolata pod\u00eda llegar a los 16 cent\u00edmetros, esta especie probablemente no pertenece a Adelophthalmidae, sino a un grupo eurypter\u00f3ideo distinto. La forma del cuerpo de Nanahughmilleria era aerodin\u00e1mica, con ojos reniformes largos y estrechos situados en posici\u00f3n intramarginal, lo que sugiere que era un nadador activo capaz de desplazarse contracorriente. Presentaba ep\u00edmeros laterales en el s\u00e9ptimo segmento, que marcaban la transici\u00f3n entre el preabdomen (segmentos 1 a 7) y el postabdomen (segmentos 8 a 12). La esp\u00e1tula genital, una estructura plana situada en la abertura genital, era muy corta en comparaci\u00f3n con la de otros adeloft\u00e1lmidos m\u00e1s derivados. Las patas caminadoras, del primer al quinto par, eran probablemente de tipo Hughmilleria, con un par de espinas en cada pod\u00f3mero, mientras que la paleta de la pata natatoria era relativamente ancha. El telson era lanceolado y poco expandido, como en otros miembros de Adelophthalmidae.<\/p>\n<p>Nanahughmilleria se distingue de los adeloft\u00e1lmidos m\u00e1s avanzados por sus esp\u00e1tulas genitales m\u00e1s peque\u00f1as y por la mayor espinosidad de sus ap\u00e9ndices, rasgos que indican una posici\u00f3n m\u00e1s basal dentro del clado. La historia taxon\u00f3mica del g\u00e9nero es extensa y compleja. La primera especie que hoy se reconoce como Nanahughmilleria fue descrita en 1859 por John William Salter como Eurypterus pygmaeus, aunque Richard Banks ya la hab\u00eda mencionado en 1856 sin descripci\u00f3n formal, lo que convierte ese nombre en un nomen nudum. Los f\u00f3siles proced\u00edan de Kington, Herefordshire, e inclu\u00edan caparazones completos y segmentos de la pata natatoria. N. pygmaea ten\u00eda un caparaz\u00f3n alargado y redondeado en el margen anterior, ojos reniformes intramarginales y ocelos diminutos situados en el centro. Sus quelas eran peque\u00f1as, como en la mayor\u00eda de los euript\u00e9ridos. Esta especie alcanzaba los 8 cent\u00edmetros y se diferenciaba de otras por la forma convergente del caparaz\u00f3n y el gran tama\u00f1o de los ojos.<\/p>\n<p>En 1884, James Hall describi\u00f3 Eurypterus prominens a partir de un \u00fanico caparaz\u00f3n del Grupo Clinton en Estados Unidos. Esta especie presentaba ojos colocados en posici\u00f3n submarginal, m\u00e1s adelantados que en otras especies del g\u00e9nero, y un caparaz\u00f3n largo con ocelos situados hacia la parte anterior. Se ha sugerido que podr\u00eda representar un g\u00e9nero aparte, y las notas de Kjellesvig-Waering indican que consider\u00f3 crear el g\u00e9nero \u201cClintonipterus\u201d para esta especie. Sin embargo, en 1961 fue asignada a Nanahughmilleria.<\/p>\n<p>En 1911, Johan Aschehoug Ki\u00e6r describi\u00f3 Eurypterus norvegica, una especie con caparaz\u00f3n parab\u00f3lico, ojos intramarginales arqueados, metastoma ovalado y un op\u00e9rculo con una esp\u00e1tula larga y estrecha. El telson era lanceolado con quilla dorsal y ventral, y el quinto ap\u00e9ndice ten\u00eda un par de espinas en cada pod\u00f3mero. La paleta natatoria era ancha. Esta especie, que alcanzaba los 10 cent\u00edmetros, fue designada como especie tipo de Nanahughmilleria por Kjellesvig-Waering.<\/p>\n<p>En 1957, L. P. Pirozhnikov describi\u00f3 N. schiraensis y Parahughmilleria matarakensis, asign\u00e1ndolas err\u00f3neamente al g\u00e9nero estilonurino Rhenopterus. N. schiraensis se conoce por un caparaz\u00f3n semioval y alargado con un margen estrecho y un ojo reniforme grande. Los ocelos estaban situados entre los ojos. Aunque se ha sugerido que esta especie podr\u00eda ser sin\u00f3nima de P. matarakensis, Shpinev argumenta que las diferencias en la longitud del prosoma y la posici\u00f3n de los ojos justifican su separaci\u00f3n.<\/p>\n<p>En 1961, Kjellesvig-Waering dividi\u00f3 Hughmilleria en dos subg\u00e9neros bas\u00e1ndose en la morfolog\u00eda ocular: Hughmilleria para especies con ojos marginales ovoides y Nanahughmilleria para especies con ojos intramarginales reniformes. N. norvegica fue designada como subgenotipo. Asign\u00f3 siete especies al subg\u00e9nero, aunque solo cuatro siguen consider\u00e1ndose v\u00e1lidas dentro del g\u00e9nero.<\/p>\n<p>N. clarkei fue descrita en 1964 por Kjellesvig-Waering a partir de f\u00f3siles previamente asignados a Hughmilleria shawangunk. Esta especie, de solo 4 cent\u00edmetros, ten\u00eda un caparaz\u00f3n lanceolado con ojos intramarginales anteriores, un telson ancho y lanceolado y espolones en los \u00e1ngulos genales.<\/p>\n<p>En 2012, Shpinev describi\u00f3 N. notosibirica a partir de dos espec\u00edmenes de Siberia. Presentaba un caparaz\u00f3n parab\u00f3lico con ojos alargados, ap\u00e9ndices pros\u00f3micos de tipo Hughmilleria con espinas peque\u00f1as, un telson peque\u00f1o en forma de cu\u00f1a y un metasoma m\u00e1s estrecho que el mesosoma. Alcanzaba los 9 cent\u00edmetros y se diferenciaba por sus proporciones corporales y la posici\u00f3n de los ojos.<\/p>\n<p>N. lanceolata, descrita originalmente por Salter en 1856 como Himantopterus lanceolatus, se clasifica provisionalmente dentro de Nanahughmilleria. Sus patas natatorias eran largas y estrechas, alcanzando el sexto segmento del cuerpo, y el telson era lanceolado con una quilla central. Todos los ejemplares carecen de ojos, lo que dificulta su clasificaci\u00f3n, y sus ap\u00e9ndices no coinciden con los de Adelophthalmoidea, sino con los de Eurypteroidea.<\/p>\n<p>Nanahughmilleria es el \u00fanico g\u00e9nero polifil\u00e9tico dentro de Adelophthalmidae, ya que algunas especies como N. prominens y N. lanceolata probablemente representan linajes distintos. En 2004, Tetlie propuso la familia Nanahughmilleridae para agrupar a los adelophthalmoideos sin esp\u00e1tulas genitales o con esp\u00e1tulas reducidas, pero esta clasificaci\u00f3n no ha sido ampliamente aceptada. Los an\u00e1lisis modernos apoyan un clado basal formado por Bassipterus y Pittsfordipterus, mientras que Nanahughmilleria aparece como tax\u00f3n hermano del clado derivado compuesto por Parahughmilleria y Adelophthalmus.<\/p>\n<p>Los f\u00f3siles de Nanahughmilleria se han encontrado en yacimientos desde el Llandovery sil\u00farico hasta el Eifeliano dev\u00f3nico en Norteam\u00e9rica, Europa y Siberia. Se cree que viv\u00eda en lagos poco profundos y ambientes marginales, compartiendo h\u00e1bitat con otros euript\u00e9ridos como Parahughmilleria, Hughmilleria y los pterig\u00f3tidos. Su forma aerodin\u00e1mica sugiere que era un nadador activo capaz de desplazarse contra corrientes.<\/p>\n<p>Nanahughmilleria aparece tanto en faunas ricas en euript\u00e9ridos como en yacimientos donde es pr\u00e1cticamente el \u00fanico artr\u00f3podo presente. En Ringerike, Noruega, conviv\u00eda con Mixopterus kiaeri, Stylonuroides dolichopteroides, Kiaeropterus ruedemanni y Erettopterus holmi, adem\u00e1s de otros invertebrados. En Jakasia, Rusia, N. schiraensis y P. matakarensis son los \u00fanicos animales presentes junto con restos vegetales. En Inglaterra, N. pygmaea aparece junto a Salteropterus abbreviatus, Parahughmilleria salteri, Erettopterus spatulatus y Herefordopterus banksii. En la Formaci\u00f3n Shawangunk, Pennsylvania, N. clarkei se encuentra asociada con Parahughmilleria maria, Ruedemannipterus stylonuroides, Hardieopterus myops y Hughmilleria shawangunk, adem\u00e1s de gnatostomas como Vernonaspis y trazas f\u00f3siles como Arthrophycus. Tambi\u00e9n se han hallado especies en Escocia.<\/p>\n<p>Nanahughmilleria, con su compleja historia taxon\u00f3mica, su diversidad morfol\u00f3gica y su amplia distribuci\u00f3n geogr\u00e1fica, representa uno de los g\u00e9neros m\u00e1s interesantes y enigm\u00e1ticos de los euript\u00e9ridos peque\u00f1os. 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escasos&#8230;<\/p>\n","protected":false},"author":1,"featured_media":9856,"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-9763","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 v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Nanahughmilleria | Un fino borde rodeaba el caparaz\u00f3n<\/title>\n<meta name=\"description\" content=\"La Nanahughmilleria puede aparecer en un entorno en el que todos los euript\u00e9ridos eran abundantes o escasos.\" \/>\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\" \/>\n<meta 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