- Today, the
archaeocyathan families are
recognizable by
small but
consistent differences in
their fossilized structures: Some
archaeocyathans were built...
- annelids, echinoderms,
hemichordates and chordates) appear. Reef-building
archaeocyathan sponges initially abundant, then vanish.
Stromatolites replace them...
- S****lines". {{cite journal}}: Cite
journal requires |journal= (help) "
Archaeocyathans". ucmp.berkeley.edu.
Retrieved 2024-04-20. Pruss, Sara B.; Bottjer...
- old, A.
germsi has been
identified as
possibly being the
oldest known archaeocyathan to date. Its
fossil material was
found between 1993 and 1996 from the...
- Baltica. Much of the
continent was
covered by
shallow seas with
extensive archaeocyathan reefs. The then
northern third of the
continent (present day south;...
- stem-hexactinellid
Helicolocellus from the
Dengying Formation and the
possible stem-
archaeocyathan Arimasia from the Nama Group.
These genera are both from the “Nama ****emblage”...
-
nahanniensis is
found in Canada, Europe, Russia, and the
United States. "
Archaeocyathans". www.ucmp.berkeley.edu.
Retrieved 2018-12-02. McMenamin, Mark (1990)...
-
North Asia and Mongolia.
Cribricyaths were
usually subordinate to
archaeocyathans as reef-building organisms,
though they
managed to be
diverse or voluminous...
-
halkieriid clades apparently died. It may be
significant that the only
archaeocyathans known to have
survived the end-Botomian
extinction also
occur in Gondwana...
-
nematode Velella velella — by-the-wind-sailor
Yukonensis yukonensis — an
archaeocyathan Abutilon abutiloides —
shrubby Indian mallow Araucaria araucana — monkey...
