- The
Biceratopsinae is an
extinct subfamily of
redlichiid trilobites within the
family Biceratopsidae, with
species of
small to
average size.
Species belonging...
- long as the
thorax axis.
There seems to be no opistothorax. Most
other Biceratopsinae, i.e.
Biceratops nevadensis,
Emigrantia and Peac****a and to a lesser...
-
insignificant pleurae. Tail
shield (or pygidium) not known. All
other Biceratopsinae have
genal spines.
Biceratops nevadensis is
known only from the lower...
- Its
features are effaced,
showing only
shallow furrows. Some
other Biceratopsinae share some of the most eye
catching features of Eopeac****a.
These differ...
-
Trilobita Order:
Redlichiida Suborder:
Olenellina Superfamily:
Olenelloidea Family:
Biceratopsidae Subfamily:
Biceratopsinae Genus:
Emigrantia nomen nudum...
- The
Bristolinae can be
distinguished from its
sister subfamily, the
Biceratopsinae, that has
effaced cephalic features (no
furrows except for the border...
-
cephalic features that are
typical for a
clade within the
subfamily Biceratopsinae. It has the
enormous sickle-shaped
pleural spines on the 3rd thoracal...
- the
genus closest to the
common ancestor of Mummaspis, Laudonia, the
Biceratopsinae and the Bristoliinae. This
clade is the
sister group Wanneria walcottana...
- ****ignment to the Laudoniinae, and
alternatively proposes inclusion in the
Biceratopsinae.
Olenelloides armatus probably was a fast-moving low-level epifaunal...
-
Olenellina Superfamily:
Olenelloidea Family:
Biceratopsidae Subfamily:
Biceratopsinae Genus:
Nephrolenellus Palmer & Repina, 1993
Species Nephrolenellus multinodus...
