- dollar, an
irregular sea
urchin (Irregularia)
Phyllacanthus imperialis, a
cidaroid sea
urchin (Cidaroidea)
Urchins typically range in size from 3 to 10 cm...
- tribuloides, the
slate pencil urchin (named
after slate pencil), is a
species of
cidaroid sea
urchins that
inhabits littoral regions of the
Atlantic Ocean. As a...
- "Urchins in the meadow:
Paleobiological and
evolutionary implications of
cidaroid predation on crinoids". Paleobiology. 34 (1): 22–34. Bibcode:2008Pbio....
-
location with more
appropriate currents, or to
evade slower predators such as
cidaroid sea urchins. "WoRMS -
World Register of
Marine Species -
Neocrinus decorus...
- Many
different fossil cidaroid radiola (spines) at the MNHN...
- "Urchins in the Meadow:
Paleobiological and
Evolutionary Implications of
Cidaroid Predation on Crinoids". Paleobiology. 34 (1): 22–34. Bibcode:2008Pbio....
- Species. Mah, Dr.
Christopher L. (20 May 2015). "What is
Going on with
cidaroid sea
urchins and
their WEIRD spines?". The Echinoblog.
Retrieved 7 June...
-
Eucidaris is a
genus of
cidaroid sea
urchins known as
slate pencil urchins (named
after slate pencil). They are
characterised by a
moderately thick test...
-
slate pencil sea urchin, is a
species of
echinoderms in the
family of
Cidaroid. This sea
urchin lives in
coastal areas in the Galapagos, Clipperton, and...
- thouarsii, the
slate pencil urchin (named
after slate pencil), is a
species of
cidaroid sea
urchins that
inhabits littoral regions of the East
Pacific Ocean. Eucidaris...
