Name: Housia sp.
Class Trilobita; Trilobite Order Asaphida; Superfamily Anomocaroidea; Family: Pterocephaliidae
Geological Time: Upper Cambrian
Size: 29 mm
Fossil Site: McKay Group, Radium, British Columbia, Canada
This
trilobite came from a very hard hard-to-access site that is possibly part
of the McKay Group, near Radium, B.C. Canada, about 100 miles from the well-known,
Lower Cambrian, Eager formation. It has close resemblance to Housia canadensis,
described by Walcott in 1916. The distinguishing feature for identification
is the unusual and very conspicuous macropleuron near the pygidium. Note
the unusual color and type of the preservation, where the trilobite varies
in color from a bluish-gray to off-white, with a distinct translucency of
the calcite. All the specimens from this locality with extremely hard matrix
have a haggard appearance, and the majority have been wrenched and torqued
by geological strains in the strata. Like many trilobites from the Tanglefoot
area, this Tricepicephalus was preserved in a calcite nodule.
