Cambrian Period — Oldest time division of the Paleozoic Era. During the Cambrian, 543–490 million years ago, there were widespread seas and several scattered landmasses. The largest continent was Gondwana. The average climate was probably warmer than today, with… … Universalium
Ediacara biota — The Ediacara (IPAEng|ˌiːdɪˈækərə, formerly Vendian) biota are ancient lifeforms of the Ediacaran Period, which represent the earliest known complex multicellular organisms. They appeared soon after the Earth thawed from the Cryogenian period s… … Wikipedia
Cambrian explosion — The Cambrian explosion or Cambrian radiation was the seemingly rapid appearance of most major groups of complex animals around Ma|530, as evidenced by the fossil record. [http://www.ucmp.berkeley.edu/cambrian/camb.html The Cambrian Period] ]… … Wikipedia
Microbial mat — A microbial mat is a multi layered sheet of micro organisms, mainly bacteria and archaea. Microbial mats grow at interfaces between different types of material, mostly on submerged or moist surfaces but a few survive in deserts.[1] They colonize… … Wikipedia
Ediacara fauna — ▪ paleontology unique assemblage of soft bodied organisms preserved worldwide as fossil impressions in sandstone from the Proterozoic Eon at the close of Precambrian (Precambrian time) time. These fauna represent an important landmark in the… … Universalium
Burgess Shale — Infobox Rockunit name = Burgess Shale caption = Marella , the most abundant Burgess Shale organism. type = Geological formation prilithology = Shale otherlithology = namedfor = Burgess Pass namedby = Charles Doolittle Walcott region = Yoho… … Wikipedia
Paleontology — Palaeontology redirects here. For the scientific journal, see Palaeontology (journal). Paleontology studies the entire history of life on Earth. Paleontology (pronounced /ˌpælɪɒnˈtɒlədʒi/; British: palaeontology; from Greek: παλαιός… … Wikipedia
Evidence of common descent — The wide range of evidence of common descent of living things strongly indicates the occurrence of evolution and provides a wealth of information on the natural processes by which the variety of life on Earth developed, supporting the modern… … Wikipedia
Burgess shale type fauna — A number of assemblages bear fossil assemblages similar in character to that of the Burgess shale. While many are also preserved in a similar fashion to the Burgess shale, the term Burgess shale type fauna covers assemblages based on taxonomic… … Wikipedia
Annelid — Temporal range: Early Ordovician–Recent[1] … Wikipedia