humble_egotist Posted October 1, 2020 Share Posted October 1, 2020 Found this concretion in Redwood creek by the Redwood National Forest. Clearly is some sort of shellfish, was wondering if anyone could provide any more details on when this fossil is from and what it is? Link to comment Share on other sites More sharing options...
DPS Ammonite Posted October 1, 2020 Share Posted October 1, 2020 (edited) Welcome to the Forum. Do you know the age or formation that the fossil came from? It looks like possibly a member of the Trigoniidae family. https://en.m.wikipedia.org/wiki/Trigonia I found a map of part of the Redwood National Park. Do you find the formation that it is from? https://www.conservation.ca.gov/cgs/Documents/Publications/Regional-Geologic-Maps/Preliminary/Crescent_City-Orick_100k_v1-0.pdf Edited October 1, 2020 by DPS Ammonite 1 My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
Ludwigia Posted October 1, 2020 Share Posted October 1, 2020 It could also be a member of the Pectinidae in my opinion. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
JimB88 Posted October 1, 2020 Share Posted October 1, 2020 +1 for pectin Link to comment Share on other sites More sharing options...
RJB Posted October 1, 2020 Share Posted October 1, 2020 Deffinetly pectin and looks like the dorsal valve RB Link to comment Share on other sites More sharing options...
mikeymig Posted October 1, 2020 Share Posted October 1, 2020 I dont know man. I see a partial ammonite whorl. Many times I've wondered how much there is to know. led zeppelin Link to comment Share on other sites More sharing options...
doushantuo Posted October 1, 2020 Share Posted October 1, 2020 don't quote me on this,but i found your specimen reminiscent of Weyla alata Link to comment Share on other sites More sharing options...
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