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Showing results for tags 'ash'.
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Taxonomy from Fossilworks.org. Diagnosis from Knobloch 1998, p. 81: "Leaves imparipinnate with seven leaflets, the terminal leaflets up to 8.2 x 2.4 cm, the lateral leaflets reach sizes up to 6 x 2.2 or 6.6 x 1.4 cm. The leaflets are narrowly elliptic or oblong-lanceolate, adnate to the rachis without petioles, gradually tapering to a rather long point, their base is wedge-shaped or rounded-wedge-shaped, the margin is distantly serrate, the teeth are abuttingly directed forward, the incisions sharp. The secondary nerve is distinctly weak, not very pronounced and hardly visible. The arcuate secondary nerves bifurcate just before the leaf margin and branch from the straight median nerve at obtuse angles, one secondary nerve can innervate one tooth as well as two teeth, sometimes intermediate nerves occur. The tertiary nerves form a very loose, large-meshed network (no anastomoses between two secondary nerves." References: Knobloch, Ervin (1998): Der pliozäne Laubwald von Willershausen am Harz (Mitteleuropa). München. Documenta Naturae. 1998. 302 S. : Ill..
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Hi there. Wondering if anyone can help with this. strange story: Found it in a fossilized ash beach- and it had clear impressions on the exterior of suction cups kinda shapes. However the substrate wasn’t stable and was kinda falling apart over time. so… I put it in my kiln to IDK see if it would turn into a ceramic. Instead the top blew off and revealed a similar shaped but non aligned actual fossil. any help with ID appreciated!
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Visit to Ashfall fossil beds in North East Nebraska recently. It's out of the way for about anyone, but worth a visit. I didn't get too many photos, but here are a few. The statues show the "rhino barn" in the background. A few shots inside, and the "first building" has some very cool stuff removed from the pit, and a nice section of a plesiosaur from a niobrara deposit nearby.
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Hello! I'm relatively new here, but I've been coming to this site for years to look at the great photos and read the discussions. I started this topic to share some of my own research that's going on right now about mass mortalities of marine invertebrates in Patagonia, Argentina. Over that past couple of years I've been working in Argentina, studying fossils (mostly decapods and mollusks) which were killed en masse by volcanic ash. We found some really interesting things in our first trip to the Valdes Peninsula, and documented that volcanic ash can have a killing effect on marine fauna even hundreds of kilometers away from the eruption! I'm also describing a new species of marine isopod that was found preserved in volcanic ash right now. This work is really exciting to me because there is a huge opportunity for new discovery. I hope to describe the numerous different effects volcanic ash has on marine ecosystems, and how they recover from catastrophic events. The ash also plays a really important role in fossil preservation processes, which I also hope to test and describe. I recently launched a "crowd funding" campaign on a website called experiment.com to help raise funds to go back to Argentina for a more comprehensive study of the mass kill sites we know about. If any of you are interested in learning more about the research, or donating to help support it, you can find a video, and other info at http://www.experiment.com/deathbyvolcanicash. I'm also interested in any comments or thoughts anyone has on this topic. I'm always looking for new field sites which may involve volcanic activity and marine fossils, and my research is also more broadly related to mass mortality events in the fossil record in general, so if anyone has any insight into any of this, please comment! Also, if anyone is in the Cleveland area, I'll be giving a talk to a local fossil club on Saturday, May 7th, so if anyone is interested, let me know!
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