-
Siberian nomenclature stage 4
would overlap with
parts of the
Botomian and
Toyonian. The
beginning of
Cambrian Stage 4 has been
tentatively correlated with...
- the
first major extinction of the Phanerozoic, the 513 – 508 Ma Botoman-
Toyonian Extinction (BTE),
which included the loss of the
archaeocyathids and hyoliths...
-
animals which lived in the
early to mid-Cambrian
Period (Tommotian to
Toyonian). They were very
similar to
archaeocyath sponges, with a cup-shaped calcareous...
-
inches long).
Fossils of
various species are
found in
Lower Cambrian (
Toyonian)-aged
marine strata from China, Korea, ****stan, the Himalayas, Iran, Spain...
- (about 5
centimetres or 2.0
inches long). It
lived during the
Botomian and
Toyonian stages of the
Lower Cambrian (Olenellus-zone), 522 to 510
million years...
-
during the
lower Cambrian.
Kutorginide diversity was
highest up to the "
Toyonian",
though they
began to
decline in the mid-Cambrian even as
other brachiopod...
-
solitary organisms,
while others formed colonies. In the
beginning of the
Toyonian Age
around 516 mya, the
archaeocyaths went into a
sharp decline. Almost...
- arthropods.
Olenellids lived during the late
Lower Cambrian (Botomian/
Toyonian) in the Olenellus-zone in the
former paleocontinent of
Laurentia and parts...
- of
agnostid trilobites that
lived during the
final Lower Cambrian (late
Toyonian) and the
Middle Cambrian. They are
small or very small, and have a thorax...
- the
order Agnostida that
lived during the
Lower Cambrian (Botomian and
Toyonian). They are
small or very small, and have a
thorax of two or
three segments...
