MikeR Posted December 24, 2012 Share Posted December 24, 2012 Ostrea sinuosa Rogers & Rogers, 1837. Upper Paleocene Paspotansa Member of the Aquia Formation, King George County, Virginia "A problem solved is a problem caused"--Karl Pilkington "I was dead for millions of years before I was born and it never inconvenienced me a bit." -- Mark Twain Link to comment Share on other sites More sharing options...
Wrangellian Posted December 26, 2012 Share Posted December 26, 2012 (edited) Here are some more (unprepped) Inoceramuses (Inocerami?).. two smaller ones from Chemainus V.I. and a larger one from a little further north, lacking shell (just internal mould): ~3" valve - this one was less damaged when I first foudn it but because it was too big to take home that day, by the time I got back some yutz had come along and tapped on it! ~5" valve - other valve edge is visible on detached piece at right - needs to be reattached and prepped ~1 foot across Edited December 26, 2012 by Wrangellian Link to comment Share on other sites More sharing options...
astron Posted December 31, 2012 Share Posted December 31, 2012 Ostrea sinuosa Rogers & Rogers, 1837. Upper Paleocene Paspotansa Member of the Aquia Formation, King George County, Virginia Very nice big shells, Mike!!! Here is their Cretan ''brother''... Astrinos P. Damianakis Link to comment Share on other sites More sharing options...
astron Posted December 31, 2012 Share Posted December 31, 2012 Here are some more (unprepped) Inoceramuses (Inocerami?).. two smaller ones from Chemainus V.I. and a larger one from a little further north, lacking shell (just internal mould): ~3" valve - this one was less damaged when I first foudn it but because it was too big to take home that day, by the time I got back some yutz had come along and tapped on it! ~5" valve - other valve edge is visible on detached piece at right - needs to be reattached and prepped ~1 foot across Very nice, Eric!! Even the casts have their own charm!!! Astrinos P. Damianakis Link to comment Share on other sites More sharing options...
Wrangellian Posted January 1, 2013 Share Posted January 1, 2013 Yes the moulds/casts can be interesting and even scientifically useful (better than nothing, at least!) as they show internal sculpture. That snail is a good example. Those specimens remind me of the mollusk clusters that are sometimes found in the Cretaceous north of me here on Vancouver Island.. Link to comment Share on other sites More sharing options...
Terry Dactyll Posted January 2, 2013 Author Share Posted January 2, 2013 Ive kept my eyes peeled for another big shell on my hunting trips but I have stumbled across nothing decent as yet.... Youve added more great specimens there, well done... and great to see the casts to... casts and partial decortications and complete shells are of equal value from the fossil record for the study of the past.... Cheers Steve... And Welcome if your a New Member... Link to comment Share on other sites More sharing options...
Wrangellian Posted January 2, 2013 Share Posted January 2, 2013 Thanks Steve, these aren't exactly recent acquisitions tho, the smaller ones were the last couple years while the large one is maybe 15 years ago! When the weather improves I hope to be able to excavate one or two that will be on the order of a foot across from my local mtn. I hear the local Inoceramids still aren't well understood, so I collect every example I can and have already contributed that large 2' one (I hope it found its way to intended recipient but that's another story!) I'd take the shelled examples over the shelless ones if possible though the int. moulds are better that nothing... maybe that's just me. What good is a partially decorticated one unless you remove the shell from it to get an int. mould? Link to comment Share on other sites More sharing options...
Terry Dactyll Posted January 3, 2013 Author Share Posted January 3, 2013 '' What good is a partially decorticated one unless you remove the shell from it to get an int. mould? '' In my experience you always seem to loose a fine layer off the surface of a fossil when the fossil is opened creating the positive and negative... The adhesion of the matrix to the fossil surface is responsible for this... It cant be helped...the fossils that this happens to are studied just the same and are exactly that... partially decorticated... Cheers Steve... And Welcome if your a New Member... Link to comment Share on other sites More sharing options...
Wrangellian Posted January 3, 2013 Share Posted January 3, 2013 Right I know what you mean, I have that happen often here with the white-shelled fossils. I keep the counterparts usually when that happens. Link to comment Share on other sites More sharing options...
astron Posted January 4, 2013 Share Posted January 4, 2013 Hello all and happy new year everyone! On post 72 I had promissed to bring some photos of oyster colonies mostly hidden into chunks of cemented sand that I had spotted in my hunting area. Since I can't reach this spot at the moment due to the winter, I am adding two small samples of crassostrea gryphoides colonies already existing in my collection. Each colony counts 8 members. The first one is shown in 3 pics and it's well cleared after hours of work. The second one is shown in 2 pics and it's still partially covered with the pebbly matrix that is strongly stuck on the shells. No doubt that an air abrasion with this one (as Steve had suggested) would be quite beneficial... Astrinos P. Damianakis Link to comment Share on other sites More sharing options...
astron Posted January 8, 2013 Share Posted January 8, 2013 Hello all! It's the turn of a single and clear this time crassostrea sp. oyster, of wich the ornamentation I like. Astrinos P. Damianakis Link to comment Share on other sites More sharing options...
Terry Dactyll Posted January 9, 2013 Author Share Posted January 9, 2013 Astrinos.... Youve got some more fabulous specimens there...'' of wich the ornamentation I like. ''.... I can see why... I spotted a big Pagiostoma whilst I was out the other day but it was a little too shabby to get my attention... I 'll keep looking ... Cheers Steve... And Welcome if your a New Member... Link to comment Share on other sites More sharing options...
astron Posted January 11, 2013 Share Posted January 11, 2013 Astrinos.... Youve got some more fabulous specimens there...'' of wich the ornamentation I like. ''.... I can see why... I spotted a big Pagiostoma whilst I was out the other day but it was a little too shabby to get my attention... I 'll keep looking ... Thanks much, Steve! In the meanwhile, here is a crassostrea gryphoides colony of 3 oysters. A somewhat strange mechanism... Astrinos P. Damianakis Link to comment Share on other sites More sharing options...
Terry Dactyll Posted January 12, 2013 Author Share Posted January 12, 2013 Astrinos.... Another fabulous specimen... all piled up!... Quite unusual.... Cheers Steve... And Welcome if your a New Member... Link to comment Share on other sites More sharing options...
astron Posted February 1, 2013 Share Posted February 1, 2013 Astrinos.... Another fabulous specimen... all piled up!... Quite unusual.... Thank you, Steve Here is an enormus crassostrea gryphoides oyster found in my hunting area (late miocene Middle Crete island, Greece), in Dec. 2012 with the prep finished these days. This type of oysters are typical of my island but this very sample is the biggest almost complete one I have found to date. It measures 36 x 16 x 15 cm and weights 6,5 kg (about 14,3 p). It makes my hand look that little...! Pics before and after the prep. Astrinos P. Damianakis Link to comment Share on other sites More sharing options...
Terry Dactyll Posted February 1, 2013 Author Share Posted February 1, 2013 Astrinos.... You need stronger shelves than I do and mine are steel reinforced .... Great find my friend.... Cheers Steve... And Welcome if your a New Member... Link to comment Share on other sites More sharing options...
Wrangellian Posted February 1, 2013 Share Posted February 1, 2013 They just keep getting bigger and bigger... Those would have fed an army (if you like oyster)! Link to comment Share on other sites More sharing options...
astron Posted February 2, 2013 Share Posted February 2, 2013 Thanks much, Steve and Eric You are right both!!! And the continuation is going to confirm you even more... Here is one more crassostrea gryphoides oyster. Not that big but decent... Astrinos P. Damianakis Link to comment Share on other sites More sharing options...
Terry Dactyll Posted February 3, 2013 Author Share Posted February 3, 2013 Astrinos.... Thats a Pearl 'er... OK... Bad joke... I just wonder if any oysters this big contained one... just imagine the size !.... Cheers Steve... And Welcome if your a New Member... Link to comment Share on other sites More sharing options...
astron Posted February 4, 2013 Share Posted February 4, 2013 Astrinos.... Thats a Pearl 'er... OK... Bad joke... I just wonder if any oysters this big contained one... just imagine the size !.... You have oppressed my corn, Steve.... I have searced quite a lot of them for hours but no trace of any pearl... At least at the moment... Astrinos P. Damianakis Link to comment Share on other sites More sharing options...
Terry Dactyll Posted February 5, 2013 Author Share Posted February 5, 2013 I have searced quite a lot of them for hours but no trace of any pearl... At least at the moment... If they are there, they shouldnt be hard to spot... I bet you could play football with it... Cheers Steve... And Welcome if your a New Member... Link to comment Share on other sites More sharing options...
astron Posted February 5, 2013 Share Posted February 5, 2013 If they are there, they shouldnt be hard to spot... I bet you could play football with it... Hmmm... It looks rather exaggerated Though, I can play also volleyball, handball, tennis, ping pong or even little plastic balls with my grandson! (and don't be seduced by the number of years I have gathered) There is no matter, therefore, what the size that pearl could be... Astrinos P. Damianakis Link to comment Share on other sites More sharing options...
Nandomas Posted February 7, 2013 Share Posted February 7, 2013 (edited) Florida babies on my roof Edited February 7, 2013 by Nandomas Erosion... will be my epitaph! http://www.paleonature.org/ https://fossilnews.org/ Link to comment Share on other sites More sharing options...
Terry Dactyll Posted February 8, 2013 Author Share Posted February 8, 2013 Nando.... Not quite babies!.... Pretty good preservation anyhow.... Thanks for sharing them with us.... Cheers Steve... And Welcome if your a New Member... Link to comment Share on other sites More sharing options...
astron Posted February 8, 2013 Share Posted February 8, 2013 Nice and big gastropods, Nando! Here is a plate where some shells of their company are gathered... A brachiopod, two gastropods and some clams... The Conus sp. in the middle is the bigger one in my collection. Astrinos P. Damianakis Link to comment Share on other sites More sharing options...
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