Dennis Richards Posted October 15, 2017 Share Posted October 15, 2017 Hi I recently obtained this specimen at a street market in Peru. Its triangular 3cm x 2cm x1cm. Looks Trigonia-like. Any ideas on id and age? Regards Dennis Link to comment Share on other sites More sharing options...
ynot Posted October 15, 2017 Share Posted October 15, 2017 Can We see more views? Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
Ludwigia Posted October 15, 2017 Share Posted October 15, 2017 It certainly does look like a member of the family Trigoniidae. Without information to stratigraphy and site it will be difficult, even for a bivalve expert, to pinpoint the species. It would help if the overlying matrix could be removed in order to see the sculpture better. And like Tony has asked, please show views from different perspectives. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Dennis Richards Posted October 15, 2017 Author Share Posted October 15, 2017 1 more view Link to comment Share on other sites More sharing options...
Dennis Richards Posted October 15, 2017 Author Share Posted October 15, 2017 Another... Link to comment Share on other sites More sharing options...
Dennis Richards Posted October 15, 2017 Author Share Posted October 15, 2017 One last photo Link to comment Share on other sites More sharing options...
Dennis Richards Posted October 16, 2017 Author Share Posted October 16, 2017 Seems the problem is solved: I found a picture then a reference Bivalve clam (Roudairia intermedia); Cretaceous; 87 Mya; Cajamarca, Peru Specimen: Triangular shape: 2.5cm x 3cm x 1cm; NAME : Roudairia intermedia (Brüggen): Bivalvia -Veneroidei – Arcticidae - Roudairia intermedia AGE : Santoniano-Coniacian, Upper Cretaceous , 83-89 Mya Bed 45, Section 1 - Lajas (Cajamarca Fm) (Cretaceous of Peru) Where: Cajamarca, Peru (6.6° S, 78.7° W: paleocoordinates 12.4° S, 55.5° W) Link to comment Share on other sites More sharing options...
Fossildude19 Posted October 16, 2017 Share Posted October 16, 2017 Thanks for the update. Good work finding the answer. Regards, Tim - VETERAN SHALE SPLITTER VFOTM - APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
abyssunder Posted October 16, 2017 Share Posted October 16, 2017 The Cajamarca formation of Peru is middle Turonian, not Santonian-Coniacian. http://fossilworks.org/bridge.pl?a=collectionSearch&collection_no=56897 Roudairia intermedia Bruggen is also present in the Celendin formation. reference " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
Dennis Richards Posted October 16, 2017 Author Share Posted October 16, 2017 Thanks, yes middle Turonian, not Santonian-Coniacian Link to comment Share on other sites More sharing options...
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