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During the Cambrian, the ecosystem of the Burgess Shale sat under 100 to 300 metres (330 to 1000 feet) of water at the base of a submarine canyon known as the Cathedral Escarpment, which today is a part of the Canadian Rockies. The ecosystem would have sat in dimly lit water, most likely at the edge, or in the Mesopelagic zone.
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.
Coralline algae are widespread in all of the world's oceans, where they often cover close to 100% of rocky substrata. Only one species, Pneophyllum cetinaensis, is found in freshwater. Its ancestor lived in brackish water, and was already adapted to osmotic stress and rapid changes in water salinity and temperature.
Marine algae can be divided into six groups: green, red and brown algae, euglenophytes, dinoflagellates and diatoms. Dinoflagellates and diatoms are important components of marine algae and have their own sections below. Euglenophytes are a phylum of unicellular flagellates with only a few marine members. Not all algae are microscopic.
Gutweed or Tube algae is common in both tropical and temperate waters. The algae forms tube-like blades secured by a single holdfast to hard surfaces and Mangrove roots. In the aquarium, this algae should be kept in water temperatures under 80 °F (26.7 °C) and may be used to feed herbivorous fish.
Wahpia is a genus of alga known from the Middle Cambrian Burgess Shale. 33 specimens of Wahpia are known from the Greater Phyllopod bed, where they comprise 0.06% of the community. [ 1 ] References
The Wheeler Shale (named by Charles Walcott) is a Cambrian (c. 507 Ma) fossil locality world-famous [1] for prolific agnostid and Elrathia kingii trilobite remains (even though many areas are barren of fossils) [2] and represents a Konzentrat-Lagerstätte.
Water mites in a mat of floating algae Two water mites feeding on the larva of a chironomid [2]. Hydrachnidia, also known as "water mites", Hydrachnidiae, Hydracarina or Hydrachnellae, are among the most abundant and diverse groups of benthic arthropods, composed of 6,000 described species from 57 families. [3]