-
given its name to the
contemporaneous mid-Ordovician
faunal stage, the
Chazyan. P.E.
Raymond of
Harvard called it "the
oldest coral reef in the world"...
-
Peter Sandstone is an
Ordovician geological formation. It
belongs to the
Chazyan stage of the
Champlainian series in
North American regional stratigraphy...
- Paleon. V 29. n.3 May 1955,pp 327–370; figs, plts. Flower,1958, Some
Chazyan and
Mohawkian Endoceratida; Jour.
Paleon V32, n.3,pp 433–468; figs, plts...
- high-sulfur coal. The St.
Peter Sandstone is an
Ordovician formation in the
Chazyan stage of the
Champlainian series. This
layer runs east–west from Illinois...
-
apical end of
Cameroceras or Vaginoceras. Flower,
Rousseau H.1958. Some
Chazyan and
Mohawkian Endoceratida. Jour of Paleontology, V.32, n3, pp433–458,...
-
Perkinsocerasis an
endocerid genus from the
Middle Ordovician (
Chazyan) of
Champlain Valley established by
Flower in 1976,
which he
added to his Allotrioceratidae...
- were added.
Similar Allotrioceras and Mirabiloceras,
known only from the
Chazyan (upper
lower Middle Ordovician) of New York, are
tubular organisms with...
-
Chazyoceras ("Horn of the
Chazyan") is a
moderately large[specify]
endocerid included in the
Endoceratidae with a
Nanno type apex and a
ventral siphuncle...
-
Cooper and
Cooper (in Cooper, 1956, p. 6–7) "as a post-Canadian – pre-
Chazyan chrono-stratographic unit"
based on
strata "in the
Monitor and Antelope...
-
beginning in
Armenoceras which first appeared near the
beginning of the
Chazyan, 2nd
stage of the
Middle Ordovician in
older established chronologies,...
