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JackTamisiea on Twitter: "I was working in-person @NMNH the other day and couldn't help admiring these gorgeous rudist clam fossils from the Cretaceous. Before the asteroid strike, these bivalves were the go-to
![Fossils From One of the World's First Reefs Can Be Found on Mountains in Nevada | Science| Smithsonian Magazine Fossils From One of the World's First Reefs Can Be Found on Mountains in Nevada | Science| Smithsonian Magazine](https://th-thumbnailer.cdn-si-edu.com/2hKw9Tar8EyH2Eoa3p_K2J_s3lk=/fit-in/1600x0/filters:focal(800x602:801x603)/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer_public/4e/f4/4ef4b279-4463-4463-9ebb-2704b40aa5fe/deathvalleyreefs_web.jpg)
Fossils From One of the World's First Reefs Can Be Found on Mountains in Nevada | Science| Smithsonian Magazine
![A typical assemblage of diverse small shelly fossils from the Cambrian... | Download Scientific Diagram A typical assemblage of diverse small shelly fossils from the Cambrian... | Download Scientific Diagram](https://www.researchgate.net/publication/279485241/figure/fig1/AS:614336548581394@1523480655324/A-typical-assemblage-of-diverse-small-shelly-fossils-from-the-Cambrian-of-Greenland.png)
A typical assemblage of diverse small shelly fossils from the Cambrian... | Download Scientific Diagram
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