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Ray-finned fishes evolved bioluminescence at least 27 chemistry and others by housing luminous bacteria, a repeated evolutionary experiment spread across deep-sea, inshore and reef lineages using different molecular machinery to make visible light
5+ hour, 15+ min ago (1087+ words) Ray-finned fishes have evolved bioluminescence independently at least 27 times. Some lineages manufacture light inside their own tissues, while others cultivate luminous bacteria in organs shaped into lures, lamps, reflectors and shutters. The number comes from a 2016 phylogenetic analysis led by…...
The Ediacaran fossil beds of the Flinders Ranges in South Australia preserve animals from 550 million years ago that predate the Cambrian explosion — soft, frond-like creatures with no mouths, no guts, and no clear relationship to any living group, suggesting a first experiment in complex multicellular life that simply ended and was replaced
1+ mon, 3+ week ago (906+ words) In 1946, a young Australian geologist named Reginald Sprigg was eating his lunch in the dry, rugged hills of the Flinders Ranges in South Australia, idly turning over slabs of ancient rock, when he noticed something on their surfaces. Impressions. Strange,…...