- 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...
-
subphylum includes the
classes Asteroidea (the
starfish or sea stars),
Ophiuroidea (the
brittle stars and
basket stars),
Somasteroidea (early asterozoans...
-
generally recognized: the
Asteroidea (starfish, with over 1900 species),
Ophiuroidea (brittle stars, with
around 2,300 species),
Echinoidea (sea
urchins and...
- This List of
echinoderm orders concerns the
various classes and
orders into
which taxonomists categorize the
roughly 7000
extant species as well as the...
- The
marine waters of the
Houtman Abrolhos, an
island chain off the
coast of
Western Australia, has been
recorded as
containing 172
species of echinoderm...
- The
Melbourne Formation is a
geologic formation in Victoria, Australia. It
preserves fossils dating back to the
Ludlow epoch of the
Silurian period. The...
- in F. A. Bather's
echinoderm taxonomy,
which grouped Asteroidea and
Ophiuroidea within it as
subclasses due to
their Paleozoic history. In 1966, the...
-
Dicyemida Crinoidea (sea
lilies and
feather stars)
Asteroidea (star fish)
Ophiuroidea (brittle stars)
Echinoidea (sea urchins)
Holothuroidea (sea cu****bers)...
- 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...
-
Urasterella asperrimus Salter 1857.
Stenaster salteri Billings, 1858 [class:
Ophiuroidea]. From the
Ordovician of
Cardin quarry,
Simcoe County, Kirkfield, Ontario...
