Turntostone Posted January 14, 2014 Share Posted January 14, 2014 Hi, Just thought I would show some examples of the micro gastropds that are found in the Caloosahatchee fm of Florida. They all come from sieving the contents of larger shells and are between 2 and 8mm. Caecum coronellum Caecum floridanum Caecum imbricatum Cyclostremiscus dartschi Cyclostemiscus sp. Solariorbis funiculus Mioceras sp Kurtziella limonitella margaritifera Cadulus quadridentatus Link to comment Share on other sites More sharing options...
Auspex Posted January 14, 2014 Share Posted January 14, 2014 Wondrous little Pliocene gems! What kind of cleaning does it take to get these results? "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
Plantguy Posted January 15, 2014 Share Posted January 15, 2014 More neat micros! I've been fooling with too many vert and invert macrofossils from the Hawthorne Group here in Florida lately, goodness only know how many inverts are in that stuff too--oh the possibilities. Thanks for showing us what you are finding! Regards, Chris Link to comment Share on other sites More sharing options...
dozer operator Posted January 15, 2014 Share Posted January 15, 2014 (edited) Wow nice stuff, I've been collecting from Calossahatchee and bermont fm for awhile now but I have not tried screening for mircos. Probably why I haven't run across those species. What book did you use to identify? Edited January 15, 2014 by dozer operator Link to comment Share on other sites More sharing options...
Turntostone Posted January 15, 2014 Author Share Posted January 15, 2014 Auspex. They don't really need cleaning just a wash as they are from an unconsolidated sandy matrix. Dozer operator: I mainly use ollson & harbison, but also Dall but there are still lots I cannot I.D with any certainty. Love collecting these little gems but it appears almost impossible to get into quarries in Florida now. Glad I did my collecting out there about 10 years ago. Gordon Link to comment Share on other sites More sharing options...
Turntostone Posted January 15, 2014 Author Share Posted January 15, 2014 Here is another selection of small shells. All Turridae this time. All Identifications provisional. Any one any other ideas. All suggestions appreciated. Brachycythara galae Cerodrillia simpsoni Cryoturris serta Sedilia myrmecoon Sedilia aphanitoma Sedilia sapa Undet. Turridae sp. Gordon Link to comment Share on other sites More sharing options...
dozer operator Posted January 16, 2014 Share Posted January 16, 2014 Since its a topic not too often hit on in TFF I thought I'd add to it by posing this micro found last weekend. I don't have an I'd nor am I positive its from calossahatchee.(the piles are mixed bermont, calossahatchee and fort thompson formation). Link to comment Share on other sites More sharing options...
dozer operator Posted January 16, 2014 Share Posted January 16, 2014 Link to comment Share on other sites More sharing options...
MikeR Posted January 16, 2014 Share Posted January 16, 2014 Aaaggghh! Turridae/Drillidae are probably the most frustrating group to identifiy in the Florida Plio-Pleistocene due to the vast diversity of Conoidea and lack of references. Yet if one were looking to find a new species I would say that these families would be a good place to start. I would love to see a monograph one day of these families however what geology student in his right mind would want to go into systematics when he could make a lot more money in oil. When I first saw your unknown, the first thing that came to my mind was Monilispira bigemma (Dall, 1890), however a quick check in Dall, O&H and my own collection quickly eliminated that species. The nodes along the shoulders and the subsutural cord however would not discount Monilispira sp. or Cf. Monilispira sp. Mike "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...
MikeR Posted January 16, 2014 Share Posted January 16, 2014 Hi Dozer Your shell is Nassarius vibex (Say, 1822) which first shows up in the Pliocene Pinecrest Beds and is still around today. Mike "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...
dozer operator Posted January 16, 2014 Share Posted January 16, 2014 MikeR thanks a lot for the information and positive ID! Link to comment Share on other sites More sharing options...
Plantguy Posted January 17, 2014 Share Posted January 17, 2014 Here is another selection of small shells. All Turridae this time. All Identifications provisional. Any one any other ideas. All suggestions appreciated. Brachycythara galae Cerodrillia simpsoni Cryoturris serta Sedilia myrmecoon Sedilia aphanitoma Sedilia sapa Undet. Turridae sp. Gordon Hi Gordon, I'm liking these as well. Not versed enough to offer any ID confirmations but you've got me looking at some of my stuff a little closer for comparison sake. Nice stuff! Regards, Chris Link to comment Share on other sites More sharing options...
Turntostone Posted January 17, 2014 Author Share Posted January 17, 2014 Turridae are great. I must have about 50 sp from the Florida beds but can only I.D about 10 percent with any certainty. Lack of references definitely make it dificult. Gordon p.s. will add some more images next week Link to comment Share on other sites More sharing options...
Turntostone Posted January 22, 2014 Author Share Posted January 22, 2014 A few more additions Acteocina candei Acteocina sphaelera Atys obscuratus Cylichnia sp Volvulella tritica Rigicula [Ringicuella] floridana Gordon Link to comment Share on other sites More sharing options...
Mediospirifer Posted January 22, 2014 Share Posted January 22, 2014 Very nice! Link to comment Share on other sites More sharing options...
cowsharks Posted January 22, 2014 Share Posted January 22, 2014 They all come from sieving the contents of larger shells and are between 2 and 8mm. Really? I've done this too with large shells I've brought home from Lee Creek in NC. As I would gently rinse out the inside of the shell I would catch everything that comes out in a sieve with 1-2mm size mesh. I was mostly hoping for micro shark teeth but also found super tiny shells. No idea if I even kept them or not, unfortunately. Link to comment Share on other sites More sharing options...
Turntostone Posted January 23, 2014 Author Share Posted January 23, 2014 Sieving the contents of larger shells is always a good way of finding the micro-species and the preservation is normally excellent as they are protected from damage in there. Just put the matrix through a 1mm sieve and look through the residue, you will be amazed at what you can find. I am always interested in sieved matrix from inside large shells from named Tertiary formations, Eocene to pleistocene. If anyone collects in Florida and would be willing to mail me residues from Tamiami, Caloosahatchee, Bermont or Fort Thompson Fm I would be happy to refund postage costs. Thanks Gordon Link to comment Share on other sites More sharing options...
typhis Posted January 29, 2014 Share Posted January 29, 2014 Forgive me if this is answered somewhere else in the forum, but what type of equipment are you using to get such good clear images of such teeny tiny specimens? My camera equipment is great for photographing racehorses going 40mph, but not so great for photographing anything smaller than an inch or so. Link to comment Share on other sites More sharing options...
Turntostone Posted January 29, 2014 Author Share Posted January 29, 2014 Images are done on a scanner. With the smaller shells, under 3mm, they are scanned at 1200 dpi. Without the top cover, scanning to open air, gives the black background. Its ok with small and long thin shells but with large and/or round shells its not as good due to lack of depth of field and distortion. 1 Link to comment Share on other sites More sharing options...
typhis Posted January 29, 2014 Share Posted January 29, 2014 Cool; thanks. I'll have to give that a try. I used a scanner on several of my smaller (1/2 to 1 inch) murex shells a number of years ago, and you're right, it didn't turn out so great. I'll have to try it with the newer model and smaller specimens. Link to comment Share on other sites More sharing options...
Herb Posted February 16, 2014 Share Posted February 16, 2014 Beautiful! "Absence of evidence is not evidence of absence"_ Carl Sagen No trees were killed in this posting......however, many innocent electrons were diverted from where they originally intended to go. " I think, therefore I collect fossils." _ Me "When you have eliminated the impossible, whatever remains, however improbable, must be the truth."__S. Holmes "can't we all just get along?" Jack Nicholson from Mars Attacks Link to comment Share on other sites More sharing options...
LorinB Posted August 31, 2017 Share Posted August 31, 2017 The second to the last photo looks like Meioceras cingulatum. I love the micros. Link to comment Share on other sites More sharing options...
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