-
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...
-
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...
-
Chazyoceras ("Horn of the
Chazyan") is a
moderately large[specify]
endocerid included in the
Endoceratidae with a
Nanno type apex and a
ventral siphuncle...
- 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...
-
Invertebrate Paleontology, Part K,
Mollusca 3.
Flower R. H. (May 1958). "Some
Chazyan and
Mohawkian Endoceratida", Jour
Paleo 32 (2) pp 433-458 Flower, R. H...
-
beginning in
Armenoceras which first appeared near the
beginning of the
Chazyan, 2nd
stage of the
Middle Ordovician in
older established chronologies,...
- type for the
family Ormoceratidae,
found in
North America from the late
Chazyan through the
early Cincinnatian of the
Middle and
Upper Ordovician, but...
- 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...
-
Meniscoceras is a
straight and
slender Chazyan endocerid described by
Rousseau Flower in 1941 The
genus was
originally included in the Proterocameroceratidae...
