Coral-like microfossils from the Lower Cambrian of California.
Microfossils from the Late Precambrian Draken Conglomerate, Ny Friesland, Svalbard.
Several months later, however, another report described additional microfossils from the same formation that supported the original hypothesis.
A report early in 2007 suggested that the 600-million-year-old globular microfossils from the Doushantuo Formation in China were not animal embryos as previously thought.
Where the boundary is in marine sediments, the iridium occurs in a layer just above the last Cretaceous microfossils, and the sediments above it contain Paleocene microfossils from the earliest part of the Cenozoic.
The sequence stratigraphic architecture of the Neogene section from the subsurface Nile Delta is resolved based on exceptionally well-preserved microfossils from the offshore NDOB-1 borehole.
There are comparable microfossils from the early Proterozoic in Minnesota and Michigan in the United States, the Belcher Islands in Hudson Bay in Canada, southern Greenland, Western Australia, and northern China.
We here report soft-bodied sea anemone-like microfossils from the Kuanchuanpu Formation representing the oldest stem hexacorallians directly comparable to extant counterparts.
Sponges from the Cryogenian 760 Ma have been described (Brain et al. 2012) as well as presumed sponge microfossils from the Riphean (800 1,400 Ma) (German and Podkovyrov 2012), and it has been suggested that the lack of siliceous spicules in the Precambrian is due to lack of their preservation and not to the absence of sponges (Sperling et al. 2010).
Berg, R. D. Bacterial translocation from the gastrointestinal tract.
