![Phylogenomic analyses of echinoid diversification prompt a re-evaluation of their fossil record | eLife Phylogenomic analyses of echinoid diversification prompt a re-evaluation of their fossil record | eLife](https://iiif.elifesciences.org/lax/72460%2Felife-72460-fig1-v2.tif/full/1500,/0/default.jpg)
Phylogenomic analyses of echinoid diversification prompt a re-evaluation of their fossil record | eLife
![Reorganization of sea urchin gene regulatory networks at least 268 million years ago as revealed by oldest fossil cidaroid echinoid | Scientific Reports Reorganization of sea urchin gene regulatory networks at least 268 million years ago as revealed by oldest fossil cidaroid echinoid | Scientific Reports](https://media.springernature.com/lw685/springer-static/image/art%3A10.1038%2Fsrep15541/MediaObjects/41598_2015_Article_BFsrep15541_Fig1_HTML.jpg)
Reorganization of sea urchin gene regulatory networks at least 268 million years ago as revealed by oldest fossil cidaroid echinoid | Scientific Reports
![Wooster's Fossil of the Week: An irregular echinoid from the Middle Jurassic of southern Israel | Wooster Geologists Wooster's Fossil of the Week: An irregular echinoid from the Middle Jurassic of southern Israel | Wooster Geologists](http://woostergeologists.scotblogs.wooster.edu/files/2013/07/Holectypus-depressus-adoral-585.jpg)