Paleontologists now know that the Precambrian actually did swarm with ... from the southwestern coast of Greenland. There are no fossils to be found there, at least not in the conventional sense.

It has long been suspected that the sparseness of the pre-Cambrian fossil record reflects these two problems. First, organisms may not have sequestered and secreted much in the way of fossilizable ...

Precambrian time covers the vast bulk of the ... The earliest living organisms were microscopic bacteria, which show up in the fossil record as early as 3.4 billion years ago.

The fossil came as a most unexpected and welcome present ... geologist who has established that Skehanos may have evolutionary linkages to even older Precambrian ancestral Australian species, and also ...

However, the fossil found, which would be a 555-million-year-old worm, would represent the oldest member of the aforementioned superphylum and the only one from the Precambrian period The fossil ...

the supercontinents of Gondwana 2 and Nuna (Columbia), as well as the geology of the Precambrian era. Earth scientists in the department also closely monitor global issues, such as energy security.

Chemical sediments provide a key geobiological record – preserving a physical record of fossil life forms and depositional ... I am particularly interested in applying my work to Precambrian chemical ...