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No Precambrian fossils are known from Virginia. [1] The geologic column in Virginia begins at the Cambrian and spans to the Quaternary. [2] Although present, the state's Cambrian rocks preserve very few fossils and no documented individual deposit has proven a fertile collecting ground. [3] The state was covered by a warm shallow sea at the ...
The Shady Dolomite is a geologic formation composed of marine sedimentary rocks of early Cambrian age (Cambrian Series 2: 521-509 million years ago).It outcrops along the eastern margin of the Blue Ridge province in the southeastern United States and can be found in outcrops in the states of Alabama, Georgia, Tennessee, North Carolina, and Virginia.
Proaulopora is a Cambrian–Ordovician fossil genus of calcareous algae.It has been variously thought to belong to the green algae, red algae or cyanobacteria.It was originally established by the Russian paleontologist Aleksandr Grigoryevich Vologdin [] in 1937, for species known from the Lower Cambrian of the western Altai Mountains.
Restoration of the Cambrian-Middle Devonian nautiloid cephalopod Cyrtoceras †Cyrtoceras †Cyrtospirifer †Cystodictya †Cystodictya lineata †Dakeoceras †Dalmanites – or unidentified comparable form †Diplograptus †Echinosphaerites †Edmondia †Encrinuroides †Eophacops †Epiphyton
Acritarchs may include the remains of a wide range of quite different kinds of organisms—ranging from the egg cases of small metazoans to resting cysts of many kinds of chlorophyta (green algae). It is likely that most acritarch species from the Paleozoic represent various stages of the life cycle of algae that were ancestral to the ...
Seed plants, which first appeared in the fossil record towards the end of the Paleozoic era, reproduce using desiccation-resistant capsules called seeds. Starting from a plant which disperses by spores, highly complex changes are needed to produce seeds. The sporophyte has two kinds of spore-forming organs or sporangia.
The U.S. Agriculture Department found dozens of violations at a Boar's Head plant in Virginia — including insects, ... The spokesperson added that food safety is the company's "absolute priority."
Stromatoporoidea is an extinct clade of sea sponges common in the fossil record from the Middle Ordovician to the Late Devonian. [1] They can be characterized by their densely layered calcite skeletons lacking spicules.