- Bathyuriscus–Elrathina-zone (contemporaneous with the
Burgess Shale) and the
subsequent Bolaspidella-zone (starting at the base of the
Drumian stage).
These are overlain...
-
formation Bathyocos housensis -
ptychopariid Bolaspidella drumensis Bolaspidella housensis Bolaspidella sp.
Bolaspidella wellsvillensis Brachyaspidion microps...
-
subzones of the
Bolaspidella Zone.
Multiple specimens. A
diplagnostid trilobite.
Bathyuriscidella B. aff. B.
amplicauda Bolaspidella contracta Subzone...
- Newfoundland), the
United States (
Bolaspidella (P. atavus)-zone,
Tatonduk River,
Hillard Peak, Alaska;
lower part of the
Bolaspidella-zone, Western-Utah; Wheeler...
- It
preserves fossils dating back to the
Drumian (Plagiura-Pogiella to
Bolaspidella Zone). It was
deposited in deep
water on a
reasonably distal slope; it...
- Powell, W. G. (2009). "A new,
Middle Cambrian,
Burgess Shale-type biota,
Bolaspidella Zone,
Chancellor Basin,
southeastern British Columbia". Palaeogeography...
- (contemporaneous with the
Burgess Shale). This is
overlain in turn by the
Bolaspidella zone (uppermost
Middle Cambrian)
Wheeler Shale and
Marjum Formation,...
- †Blountia †
Bolaspidella †
Bolaspidella contracta †
Bolaspidella housensis †
Bolaspidella type
locality for
species –
informal †
Bolaspidella wellsvillensis...
- †Billingsaria †Billingsaria
parva †Billingsaspis †Billingsaspis
adamsii †
Bolaspidella †
Bolaspidella convexa †Bonnia †Bonnia
bubaris †Bonnia
capito †Bovicornellum...
-
Enantiaspis enantiopa P.
fitchi =
Hamptonella fitchi P.
housensis =
Bolaspidella housensis P.
laeviceps =
Asaphiscus laeviceps P.
ligea = Probowmania...
