Acritarch - Wikipedia
网页Acritarchs are organic microfossils of uncertain biological affinity, found in rocks from the Archean to the present. They reflect major ecological events such as the Cambrian explosion and the appearance of predation.
Fossil Focus: Acritarchs - PALAEONTOLOGY[online]
网页Learn about acritarchs, small, organically preserved fossils that date back 1.8 billion years and played a role in increasing the oxygen in the oceans. Find out their anatomy, function, evolution and how they are studied by palynologists.
Palynomorph focus: Acritarchs-by Paul Strother - The …
网页Acritarchs are organic-walled microfossils that preserve as hollow balls and represent marine phytoplankton. Learn about their origin, diversity, classification, and ecological significance from the Precambrian to the present.
Acritarch - SpringerLink
网页Acritarchs are microscopic organic-walled hollow vesicles with an unknown biological affinity. They are useful for biostratigraphy, paleoenvironmental reconstruction, and eukaryote evolution studies in marine sediments from the Archean to the present.
Acritarchs and Chitinozoa - UCL
网页Learn about the history, classification, range and applications of acritarchs and chitinozoa, two groups of organic-walled microfossils from the Proterozoic and Palaeozoic. Find out their possible affinities, morphology, biology and palaeoenvironmental significance.
Acritarchs - SpringerLink
网页2019年12月13日 · Acritarchs are organic-walled microfossils of unknown origin that date back to the early Paleozoic. They are among the oldest eukaryotes and may have played a role in oxygenation of the oceans and the rise of animals.
Ancient acritarchs - Nature
网页2010年2月17日 · Organic-walled microfossils of large size (50 micrometres or more) and of uncertain biological affinities are known as acritarchs. The oldest well-preserved examples come from mid-Proterozoic...
Palaeoecology of Cambrian–Ordovician acritarchs from China: …
网页2022年2月7日 · Acritarchs are organic-walled microfossils of unknown origin that mostly represent the cysts of marine phytoplankton and are thus, as primary producers, an important element at the base of the marine trophic web.
1.3 Billion years of acritarch history: An empirical morphospace ...
网页2006年1月20日 · Acritarchs, a group of decay-resistant organic-walled vesicular microfossils, dominate the fossil record of Proterozoic (2500–542 Ma) and Cambrian (542–488 Ma) protists.
Acritarch | microfossil | Britannica
网页Acritarchs are small microfossils that may be spore cases of algae. They are widespread in marine rocks and have potential for zonation of Lower Cambrian rocks.
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