A.C. Posted September 1, 2022 Share Posted September 1, 2022 Hey all, I have a fossil in my collection that has a fossil on matrix. I am unsure as to if this fossil was placed there unnaturally or not. Under black light no obvious signs of glue (nothing glows) Though the suspect part to me is what appears to be holes or bubbles on the rock at the base of the specimen. I guess it’s possible that the specimen was completely removed cleaned and popped back on, or it is possible that the specimen was found and later placed on this matrix. What are the chances though that this fossil and matrix go together and have never been separated? Link to post Share on other sites
Fossildude19 Posted September 1, 2022 Share Posted September 1, 2022 Can we get a picture of the entire fossil? Also, is there any other indication of the suspect material elsewhere on the matrix? Link to post Share on other sites
A.C. Posted September 1, 2022 Author Share Posted September 1, 2022 It’s my Dipleura / Eldredgeops association here: The person I got it from yesterday told me while the Dipleura is legitimately there the Eldredgeops may be suspect (they heard from someone else who was interested in the piece) Link to post Share on other sites
A.C. Posted September 1, 2022 Author Share Posted September 1, 2022 Nowhere else do I see any hints of sketchy business besides the left eye of the Dipleura looking like it was glued on during prep. Link to post Share on other sites
Kane Posted September 1, 2022 Share Posted September 1, 2022 The Eldredgeops was added to the plate using a glue and granulated matrix mix, methinks. The matrix colour around the trilobite is a different shade (more brown than the surrounding grey). Not an authentic association, but rather likely two trilobites found in the same strata that were "united" by the glue-matrix mixture. 2 Link to post Share on other sites
Fossildude19 Posted September 1, 2022 Share Posted September 1, 2022 I agree this association was created. The preservation on the trilobites looks different, as well. 1 Link to post Share on other sites
A.C. Posted September 1, 2022 Author Share Posted September 1, 2022 Thanks all. Bummer I guess that solves the mystery for me. Next time I will be more diligent in checking fossils ahead of time. Link to post Share on other sites
FossilNerd Posted September 1, 2022 Share Posted September 1, 2022 5 hours ago, A.C. said: Thanks all. Bummer I guess that solves the mystery for me. Next time I will be more diligent in checking fossils ahead of time. I don’t think it’s too much of a bummer. Sure they were not originally associated, but you still have two decent looking trilobites. If it bothers you too much, just cut the rock in half. Problem solved! 3 Link to post Share on other sites
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