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...

glass 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...

Tappania is an acanthomorph acritarch found in late Paleoproterozoic, Mesoproterozoic and Neoproterozoic rocks. The oldest examples are around 1630 million...

Amoebozoa Opisthokonta Animals Fungi Mesomycetozoea) Incertae sedis †Acritarchs †Grypania †Gunflint microbiota †Chitinozoan Meteora sporadica ¹traditional...