Manual archive Cambrian explosion Fair points My approach was to lay down the evidence first then interpret it in the later section but it doesn t seem ideal Perhaps as you say each section could conclude with a why are you telling me this then then the article could conclude with a semi repetitive conclusion drawing things together Pretty much any good piece of writing ends with a conclusion but they seem to be frowned upon at WP In terms of types of organism preserved what are the salient points that would define a type I m sorry I didn t realise you were referring to the sub article Yes these need a lot of work One could probably write a book on Burgess shale type preservation and I certainly intend to spend some quality time with that page at some point Refs URLs DOIs act as URLs and usually lead to at least an abstract PMC and PMIDs are usually useful too The citation tool has no way of finding a URL that doesn t fall into the previous categories unless it is explicitly supplied for example if you access it via the scholar interface There was recently a debate at Template talk Cite journal about whether the title should be linked to point to the doi if a DOI but no URL was specified I can t remember the details but I think it fizzled out somewhat Agronomic revolution Hey I ve just started work on the article for the Agronomic revolution If we get it up to a decent standard in the next four days it could be featured on the main page as a new article in the Did you know section Just thought I d flag it up if you wanted to help expand it a bit Neither had I I ll be largely basing it on the Seilacher paper and if I get keen on references within I asked because you sounded like you knew a bit about the chemistry of things as soon as anyone mentions to me I tend to switch off So we re to stagger into it leaning on each other like a couple of drunks Well I know next to nothing about at least 90 of the articles I create before I start writing them But one reference tends to lead to another and I like to think that most of my contributions end up being reasonably comprehensive Better to knock something together than to wait for an expert to become a wikipedia editor or vice versa By the way how s it looking now Hey I like your image But is that a gastropod I see munching away in the background They didn t evolve until the late Cambrian according to WP at least If the edit s easy to make it might be nice to also illustrate the burrow of an undermat miner which follow the boundary between the mat and the underlying substrate Thanks again for the addition Well I guess after the revolution doesn t have to imply immediately after and the snail is cute I guess the obscure term can be attributed to Seilacher s German mother tongue As I understand it the revolution worked its way from shallow waters to deep Burgess type preservation could have continued until each little backwater had been reworked by burrowers End Ediacaran extinction This collaboration lark s quite good fun isn t it If you fancy taking a quick look at End Edia