Plumularioidea is a
superfamily of hydrozoans in the
order Leptothecata.
This superfamily unites about 45
genera in the following
families
Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Ideal ...
:
*
Aglaopheniidae Marktanner-Turneretscher, 1890
*
Halopterididae Millard Millard may refer to:
__NOTOC__ Places in the United States
* Millard, Missouri, a village
* Millard, Omaha, Nebraska, a former suburb and present-day neighborhood of Omaha
* Millard Creek, Pennsylvania
* Millard County, Utah
* Millard, Virginia, an ...
, 1962
*
Kirchenpaueriidae Stechow, 1921
*
Phylactothecidae Stechow, 1921
*
Plumaleciidae Choong & Calder, 2018
*
Plumulariidae McCrady, 1859
*
Schizotrichidae Peña Cantero, Sentandreu & Latorre, 2010
These
thecate hydroids grow in erect colonies, branched in some
species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...
but unbranched in others. Each branch may bear a single or several animals. In the latter case the
hydrothecae are arranged in a neat single file; in either case they are not set on stalks but grow from the branches directly. The hydrothecase have a cusped or even rim and instead of a
diaphragm a well-defined floor with a
hydropore that is usually off-center. The