Many Cambrian fossils are simply spines and sclerites unassociated with any body. Few of the exceptionally-preserved Cambrian freaks come with spines attached, and some of the most prominent of these are the chancelloriids. Originally described as sponges by Charles Doolittle Walcott back in 1920 (Walcott, 1920), modern researchers have found that the spines are very similar to those […]
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Stefan Bengtson & Desmond Collins (2015). Chancelloriids of the Cambrian Burgess Shale., Palaeontologia Electronica, Other:
Juvenile hormones are probably the single most important hormone in insects, playing crucial roles in development, especially in molting and metamorphosis. To underline their importance, a specific class of synthetic insectide, the insect growth regulators, is devoted only to messing around with juvenile hormone levels of target insects. Two enzymes are involved in the natural deactivation of juvenile […]
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A reader emailed me with an observation after reading my article on the bee dance language: while looking at a bee performing a dance, he heard a little squeak, after which the bee suddenly stopped dancing. This guy is both brave and has the best ears that have ever graced this Earth. This observation that he made is […]
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One more sale today. Celebrating their 65th anniversary,Indiana University Press has a lot of books available at 65% off. See the entire selection, and my recommendations below. To get the discount, type this when checking out: 65OFF. General: How Can You Tell if a Spider is Dead? And More Moments of Science (Glass, ed.; 1996) Why You Can […]
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New sale over at Cambridge University Press, you have three days (until February 20) to get 20% off select anthropology books. See the full listing, and my recommended picks are below. To get the sale, enter this at checkout: ANTHRODAY2015. The Evolution of Language (Fitch; 2010) Social Anthropology and Human Origins (Barnard; 2011) Tooth Development in Human Evolution and […]
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