-
Acritarchs are
organic microfossils,
known from
approximately 1800
million years ago to the present.[inconsistent] The
classification is a
catch all term...
-
skeletons or
microbial cysts from the Chrysophyta, Pyrrhophyta, Sarcodina,
acritarchs and chitinozoans,
together with
pollen and
spores from the
vascular plants...
-
Amoebozoa Opisthokonta Animals Fungi Mesomycetozoea)
Incertae sedis †
Acritarchs †Grypania †Gunflint
microbiota †Chitinozoan
Meteora sporadica ¹traditional...
-
Amoebozoa Opisthokonta Animals Fungi Mesomycetozoea)
Incertae sedis †
Acritarchs †Grypania †Gunflint
microbiota †Chitinozoan
Meteora sporadica ¹traditional...
- gl**** negatives. He
first described chitinozoans and many
species of
acritarchs,
dinoflagellate cysts and graptolites. In 1973 he
became an
honorary member...
-
Amoebozoa Opisthokonta Animals Fungi Mesomycetozoea)
Incertae sedis †
Acritarchs †Grypania †Gunflint
microbiota †Chitinozoan
Meteora sporadica ¹traditional...
- macroreticulata,
Germinosphaera alveolata, and
Valeria lophostriata. Some
acritarchs are
known from at
least 1.65
billion years ago, and a fossil, Grypania...
-
Atmospheric oxygen and
carbon dioxide levels similar to
present day.
Acritarchs disappear.
Climate initially warm, but
later it cools. 72.1 ± 0.2 * Campanian...
-
claimed by some, however, to
represent the
infilling of an egg-sac or
acritarch. In 2020,
Ikaria wariootia was
claimed to
represent one of the oldest...
- multicellularity.
Early eukaryote fossils, from the late Paleoproterozoic,
include acritarch microfossils with
relatively robust ornate carbonaceous vesicles of Tappania...
