- serpent-like arms of the
brittle star) are
echinoderms in the
class Ophiuroidea,
closely related to starfish. They
crawl across the sea
floor using their...
- The
subphylum includes the
class Asteroidea (the starfish), the
class Ophiuroidea (the
brittle stars and
basket stars), and the
extinct taxa Somasteroidea...
-
generally recognized: the
Asteroidea (starfish, with some 1,745 species),
Ophiuroidea (brittle stars, with
around 2,300 species),
Echinoidea (sea
urchins and...
- in F. A. Bather's
echinoderm taxonomy,
which grouped Asteroidea and
Ophiuroidea within it as
subclasses due to
their Paleozoic history. In 1966, the...
-
modern scope of Echinozoa, it
followed embryological evidence grouping Ophiuroidea with Echinozoa. This clade, as
sister to the Asteroidea, was
given the...
-
Dicyemida Crinoidea (sea
lilies and
feather stars)
Asteroidea (star fish)
Ophiuroidea (brittle stars)
Echinoidea (sea urchins)
Holothuroidea (sea cu****bers)...
-
Urasterella asperrimus Salter 1857.
Stenaster salteri Billings, 1858 [class:
Ophiuroidea]. From the
Ordovician of
Cardin quarry,
Simcoe County, Kirkfield, Ontario...
- the
central disk of a sea star or sea
urchin or the oral
surface of
Ophiuroidea.
Close up, it is
visibly structured,
resembling a "madrepore" (stone...
-
Ophiuroidea Brittle stars
Asteroidea Starfish...
-
Echinodermata Subphylum Asterozoa class Asteroidea (starfish)
class Ophiuroidea (brittle stars)
Subphylum Blastozoa †
Subphylum Crinozoa (sea lillies...
