Semaeostomeae


Also found in: Wikipedia.

Semaeostomeae

[sə‚mē·ə′stō·mē‚ē]
(invertebrate zoology)
An order of the class Scyphozoa including most of the common medusae, characterized by a flat, domelike umbrella whose margin is divided into many lappets.
References in periodicals archive ?
Table 1 Comparison of hell morphology and kinematics and swimming performance of different medusan taxa that use different propulsive strategies as juveniles than their rowing adult forms Class Hydrozoa Hydrozoa Scyphozoa Order Leptomedusae Limnomedusae Semaeostomeae Genus Aequorea (1) Liriope (2) Cyanea (3) Juvenile Propulsive mode Jetting Rowing Paddling Size (cm) 0.
Semaeostomeae traditionally is composed of three families of pelagic jellyfish, including some of the best-known species: Cyaneidae (e.
However, recent phylogenetic analyses of Cnidaria based on morphology (Marques and Collins, 2004) and molecular data (Collins, 2002) suggest that Stauromedusae is not more closely related to the scyphozoan taxa Coronatae, Rhizostomeae, and Semaeostomeae (herein united as Scyphozoa, following Marques and Collins, 2004) than it is to Cubozoa or Hydrozoa.