- habitats, from
rocky s****s to
hadal zone depths. The
fossil record of the
Echinoids dates from the
Ordovician period, some 450
million years ago. The closest...
-
Echinoid fossils are the
fossilised remains of sea urchins,
spiny marine invertebrates that live on the seabed.
Humans have been
interested in
these fossils...
- The
Gnathostomata are a
superorder of sea urchins,
including the
familiar sand dollars.
Gnathostomatans are
irregular in shape, but
unlike other irregular...
-
Melonites is an
extinct genus of sea
urchin from the
family Palaechinidae.
Species belonging to this
genus lived during the late
Mississippian (Meramecian)...
-
inhabits littoral regions of the
Atlantic Ocean. As a
member of the
basal echinoid order Cidaroida, its morphological,
developmental and
molecular genetic...
-
Irregularia is an
extant infraclass of sea
urchins that
first appeared in the
Lower Jur****ic.
These particular sea
urchins are
distinguished from other...
- is a
geologic formation in Jamaica. It
preserves ammonite,
bivalve and
echinoid fossils dating back to the Late
Santonian stage of the
Cretaceous period...
- squid,
large whales, octopuses, sponges, brachiopods, sea stars, and
echinoids, but this zone is
difficult for fish to live in. The
pelican eel uses...
- received, on the
recommendation of Euan Clarkson, a
Carnegie Award to
study echinoid fossil distribution in the
Aalenian (Inferior Oolite) of the Cheltenham...
- dark gray cherts. The
Catalan Bay
Shale Formation contains unidentifiable echinoid spines and
belemnite fragments and
infrequent Early Jur****ic (Middle Lias)...
