Periodo conocido como La edad de los peces. En este se da la aparición de tiburones primitivos (Cladoselache) y peces óseos, entre otros. Así como la extinción de Ostracodermos.
Los tipos de desarrollo fisiológico son _______ y directo.
Término con el que se conoce a los organismos cuya temperatura corporal depende principalmente de fuentes externas.
Escamas con capa externa de esmalte, debajo capa gruesa de dentina. Además, tienen dos capas óseas: Vascular y Laminar.
Nombre de los organismos pertenecientes a la antigua clase Cyclostomi en la cual se encontraban ubicados los agnatos(peces sin mandíbula) que incluía a los mixinos y las lampreas.
Fósiles mandibulados más antiguos (Clase).
Larva amocete con aberturas faríngeas, alimentada por suspensión (filtración).
Peces con aletas membranosas sostenidas por radios o espinas óseas. Vertebrados acuáticos dominantes.
Secuencia de ADN con función importante siendo factores para el proceso de organogénesis y morfogénesis. Controlan el lugar donde se forman los órganos y cuántos en cada parte.
Periodo en el que se extingue Carcharodon megalodon.
Tipo de radio de aletas córneos, rígidos y no tienen segmentación.
Término con el que se le conoce a los peces que realizan migraciones de un tipo de cuerpo de agua a otro; un ejemplo sería los peces que migran de agua salada a agua dulce.
Forma corporal presente en las anguilas.
Forma de cola homocerca que le permite a los peces que la tienen un nado rápido, al ser rígida y tener menos área superficial que otras, por lo cual experimenta menos fricción.
Dentro de los neopterigios se reconocen tres principales linajes. Estos linajes son: Gaspares, Asmia y ___________.
Verticales
Repetición de segmentos o unidades corporales, en peces cumple la función de ayudar a la natación.
Término que define la muerte después del desove, que tienen una sola reproducción.
Era en la que se separan ictiofaunas de Caribe y Pacífico
Tipo de soporte particular de aletas presentes en los organismos de la clase Osteichthyes. Corresponden a radios que tienen gran flexibilidad, aparecen segmentados y hacia la parte más alejada del cuerpo (discal), se encuentran ramificados.
Forma de cola homocerca que le permite a los peces que la tienen un nado rápido, al ser rígida y tener menos área superficial que otras, por lo cual experimenta menos fricción.
Tipo de fluidos corporales de la clase Myxini (pez baboso), son los únicos craneados con este tipo de fluidos.
Estructuras ubicadas a lo largo de la parte dorsal del notocordio y protegen la base de las “ramas nerviosas” (base del nervio).
Huesos pequeños que dieron origen a los dientes, se encuentran en forma alineada y asociados con las mandíbulas. Estaban en la “nuca” de algunos de los ancestros no mandibulados antes de evolucionar.
Tipo de soporte (hueso) estructural presente en muchos grupos, está detrás del arco que da origen a las mandíbulas.
Clado de peces con aletas musculares y huesos articulados en las aletas. Intermedio entre Actinopterygii y tetrápodos.
Tipo de Escamas Isopedoideas con forma discoidal y margen posterior dentado.
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