-
Fossil specimens are
usually semicircular to bean-shaped,
incomplete cranidia, with
globular glabella (especially
typified by the ball-shaped glabellum...
-
Bolaspidella contracta Subzone. 10
cranidia. A
lonchocephalid trilobite. T.
pristina Bolaspidella contracta Subzone. Over 20
cranidia. A
lonchocephalid trilobite...
- Rapids.
Perryus P.
severnensis Limestone Island,
Severn River.
Several cranidia,
pygidia and
disarticulated exoskeletons. An encrinurid.
Stenopareia S...
- Like
Odontopleuridae odontopleurids,
damesellids have broad, bar-shaped
cranidia with ledge-like borders.
Damesellidae may
represent transitional forms...
- the
small size of the only
parts known of
these trilobites,
namely the
cranidia. The
synonym Br****icicephalus is a
combination of Br****ica (Latin, "cabbage")...
- ****igned to Corynexoc****a Suvorova, 1964,
based on
features of
their cranidia (according to Dean and Özgül, 1994, p. 15).
Acontheus limbatus Egorova...
- reef R-10,
sample locality no.3 (Facies 2A).
Numerous partial to
complete cranidia and pygdia.
Kielania K.
triabsidata Schizoproetoides S.
ellesmerensis Lowther...
- than
observed in P.
sedgwickii sedgwickii. Vanĕk et al. (1999)
described cranidia from the
Middle Cambrian of
Skrije - Týřovice area in the
Czech Republic...
- to A. socialis, as are Sdzuy's 1961
illustrations of ****ociated
Spanish cranidia and a
thoracic axis
without notable nodes or spines". A.
affinis (Billings...
- Trimerocephaloides). The
dorsal facial sutures are not functional, so
cranidia and free ch****s (or librigenae) are not
found separated. The
marginal ridge...
