tag:blogger.com,1999:blog-20092824.post4950887656372474006..comments2024-01-30T19:45:36.648+11:00Comments on Lounge of the Lab Lemming: Geosonnet 36C W Mageehttp://www.blogger.com/profile/09706100504739548720noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-20092824.post-35529277308844186442016-01-19T00:03:44.744+11:002016-01-19T00:03:44.744+11:00Beautiful pictures of previously-Ediaacaran-to-Cam...Beautiful pictures of previously-Ediaacaran-to-Cambrian fossils from the Cryogenian. As well as continuous older forms. C W Mageehttps://www.blogger.com/profile/09706100504739548720noreply@blogger.comtag:blogger.com,1999:blog-20092824.post-69079055879862491552016-01-18T11:53:29.611+11:002016-01-18T11:53:29.611+11:00I'm stuck with abstract only.
If the fossils ...I'm stuck with abstract only.<br /><br />If the fossils are detailed enough to show continual evolution of large photosynthetic organisms, then I retract my point. If they just show scattered points in a continuous lineage, then it seems plausible that a single lineage could go large, evolve for a while, leave fossils, go single-celled as conditions required, then go multi-celled again when Chris Phoenixhttps://www.blogger.com/profile/13368959552769808835noreply@blogger.comtag:blogger.com,1999:blog-20092824.post-82342329366247222212016-01-17T22:31:28.148+11:002016-01-17T22:31:28.148+11:00The point is that the fossils show the continual e...The point is that the fossils show the continual evolution of large photosynthetic organisms, which are assumed to have lived somewhere close to the surface in open water. Can you get the full text, or are you stuck with abstract only?C W Mageehttps://www.blogger.com/profile/09706100504739548720noreply@blogger.comtag:blogger.com,1999:blog-20092824.post-40136894305521169052016-01-17T15:14:53.954+11:002016-01-17T15:14:53.954+11:00Snowball Earth pre-dates the Cambrian. Surely anim...Snowball Earth pre-dates the Cambrian. Surely animal and bacterial life could have survived just fine around hydrothermal vents, even under ice? <br /><br />Obviously, oxygen-fixing organisms existed both before and after the alleged snowball, and presumably would have needed sunlight. But algae can live on glaciers. There wouldn't have been dust to provide minerals, but there would have beenChris Phoenixhttps://www.blogger.com/profile/13368959552769808835noreply@blogger.com