-
frontal appendage of a
hurdiid Frontal appendages of
various species of
hurdiid Dorsal carapaces of
various species of
hurdiid Hurdiidae is characterized...
-
reached a
length of 8.3 cm (3.3 in) An
isolated frontal appendage of a
hurdiid with a
length less than half that of the
juvenile Lyrarapax is known, but...
- of
Radiodont species,
primarily from the
clade Amplectobeluidae.
While hurdiids are
poorly known from the
formation and
surrounding region,
several specimens...
-
Cambroraster is an
extinct monotypic genus of
hurdiid radiodont,
dating to the
middle Cambrian, and
represented by the
single formally described species...
- Pseudoangustidontus, an
unnamed hurdiid from Wales, the
middle Ordovician dinocaridid Mieridduryn, and the
Devonian hurdiid Schinderhannes, this radiodont...
-
Schinderhannes bartelsi is a
fossil species of
hurdiid radiodont (anomalocaridid),
known from a
single specimen from the
Lower Devonian Hunsrück Slate...
- from the
Lower Cambrian Maotianshan Shales,
tentatively classified as a
hurdiid (peytoiid) radiodont, and
originally as a thylacocephalan. The
genus contains...
-
Buccaspinea is an
extinct genus of
Cambrian hurdiid radiodont from the
Marjum Formation,
known from
frontal appendages and a
nearly complete albeit headless...
-
considered to be
related to
modern velvet worms.
Cambroraster falcatus was a
hurdiid radiodont that bore a
large horseshoe-shaped carapace.
Pikaia was a stem-chordate...
-
mouth opening. Such an oral cone is very
different from
those of a
typical hurdiid radiodont like
Peytoia and Hurdia,
which is
smooth and tetraradial. As...
