pleecan Posted April 30, 2010 Share Posted April 30, 2010 (edited) Purchased some micro fossils from a UK Ebay seller... The micro fossils was brought to my attention by Michigan Tim.... thanks Tim. PL Edited April 30, 2010 by pleecan Link to comment Share on other sites More sharing options...
JimB88 Posted April 30, 2010 Share Posted April 30, 2010 Is that a fish tooth? Link to comment Share on other sites More sharing options...
pleecan Posted April 30, 2010 Author Share Posted April 30, 2010 Magnification is +40X .... A fish tooth... not sure??? I am not that familiar with microfossils... thought it to be more like the jaws/teeth of a worm... I let more experience members id it. PL Link to comment Share on other sites More sharing options...
palaeopix Posted April 30, 2010 Share Posted April 30, 2010 Is that a fish tooth? That is a Conodont element which is a tooth from a jawless fish. There's a great chapter on conodonts and teeth in general in Neil Shubin's book Your Inner Fish: A Journey Into The 3.5-Billion-Year History Of The Human Body. Link to comment Share on other sites More sharing options...
pleecan Posted April 30, 2010 Author Share Posted April 30, 2010 Thanks for the Conodont ID Dan. PL Link to comment Share on other sites More sharing options...
pleecan Posted April 30, 2010 Author Share Posted April 30, 2010 Shark skin denticle: Eryptichius americnaum Armoured fish boney plates Assorted stuff... Link to comment Share on other sites More sharing options...
glacialerratic Posted April 30, 2010 Share Posted April 30, 2010 Hey, alright! I've been wanting to see some results from your purchase. Very nice conodont tooth! And that armored fish plate is pretty cool, too. How abundant are the fossils in the sand? I think I can see at least one in the last shot. Tim Link to comment Share on other sites More sharing options...
pleecan Posted April 30, 2010 Author Share Posted April 30, 2010 How abundant are the fossils in the sand? I think I can see at least one in the last shot. Tim Not sure Tim... the one sample unit consist of 2 small 1/2" in capsule that is half filled.... I only emptied one capsule.... they look like specks of dust.... looks like I will be switching over to a more powerful microscope as the stereo dissecting scope has reached its max at 40X and the zoom on the camera is max and the images are fuzzy.. what you are getting is empty magnification with no increase in resolution... I will be going to a metallurgical scope to see the microfossils. PL Link to comment Share on other sites More sharing options...
pleecan Posted May 2, 2010 Author Share Posted May 2, 2010 (edited) Imaged with a Metallugical microscope with 2x 0.05 N.A. achromat objective lens and 6000K lighting, 8-10x relay lens to Nikon 995 camera with remote shutter release.... more Harding microfossils: Shark Skin Denticles: Eryptichus americnaum (Armoured Fish Boney Plates) Conodonts: Chirognathus sp. Astraspis desideratus (Amoured Fish Boney Plates) Othere Micro fossils..... Edited May 3, 2010 by pleecan Link to comment Share on other sites More sharing options...
Kentuckiana Mike Posted May 3, 2010 Share Posted May 3, 2010 Those are some nice fossils with impressive photography. In my opinion, the middle picture of the conodont (Harding2.jpg) is a Chirognathus sp. from the Middle Ordovician Period. See this page (http://www.indiana9fossils.com/Microfossils/Harding%20Sandstone.htm) on Harding Sandstone Microfossils for a similar looking fossil. Also consult the book, The Index Fossils of North America by Hervey W. Shimer and Robert R. Shrock (Massachusetts Institute of Technology, 1944) p. 237 which lists Chirognathus duodactyla and Chirognathus alternata (Plate 93 Figure 12) being found in the Harding Sandstone of Colorado. Link to comment Share on other sites More sharing options...
pleecan Posted May 3, 2010 Author Share Posted May 3, 2010 Those are some nice fossils with impressive photography. In my opinion, the middle picture of the conodont (Harding2.jpg) is a Chirognathus sp. from the Middle Ordovician Period. See this page (http://www.indiana9fossils.com/Microfossils/Harding%20Sandstone.htm) on Harding Sandstone Microfossils for a similar looking fossil. Also consult the book, The Index Fossils of North America by Hervey W. Shimer and Robert R. Shrock (Massachusetts Institute of Technology, 1944) p. 237 which lists Chirognathus duodactyla and Chirognathus alternata (Plate 93 Figure 12) being found in the Harding Sandstone of Colorado. Thanks Mike for the complements and for the references... just a newbie at looking into microfossils... the micro world is intriguing. Peter Link to comment Share on other sites More sharing options...
Auspex Posted May 3, 2010 Share Posted May 3, 2010 ...the micro world is intriguing. I'll say! For a number of reasons, the Forum is the only way I have of exploring this fascinating, hidden world; thank you for bringing me these opportunities "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...
pleecan Posted May 3, 2010 Author Share Posted May 3, 2010 I'll say! For a number of reasons, the Forum is the only way I have of exploring this fascinating, hidden world; thank you for bringing me these opportunities You are welcome Auspex.... I have learned lots from our fellow forum members in the last 5 months. PL Link to comment Share on other sites More sharing options...
Coco Posted May 3, 2010 Share Posted May 3, 2010 Hi, Pleecan, your first pic on your last post looks like a kind of shark tooth... Coco ---------------------- OUTIL POUR MESURER VOS FOSSILES : ici Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici Mâchoires sélaciennes récentes : ici Hétérodontiques et sélaciens : ici Oeufs sélaciens récents : ici Otolithes de poissons récents ! ici Un Greg... Link to comment Share on other sites More sharing options...
pleecan Posted May 3, 2010 Author Share Posted May 3, 2010 Thank you Coco for id. PL Link to comment Share on other sites More sharing options...
snikt.biff Posted November 18, 2011 Share Posted November 18, 2011 That's amazing! Link to comment Share on other sites More sharing options...
pleecan Posted November 20, 2011 Author Share Posted November 20, 2011 Hi Peter, Your UK seller Kieran D. is from the US (Tennessee). I have some Harding Sandstone microfossils in situ and they are very interesting enlarged. The specimen pieces came from this roadcut NW of Canon City, CO. The red to buff colored sandstones are one big lag deposit throughout the interval. The red was more concentrated in fish scales. I haven't broke down the matrix to look for Conodonts that are very well documented in this unit. I'd be glad to give you some to have fun with. It is unlikely I will be seeing you at Ridgemount Qy. this year for a hand off. -John in New York Thanks John! That would be interesting to look at but It will have to be next yr as I have no vacation left this yr : ( I am basically hibernating till spring.... hiding indoors and playing with camera equipment continue building my optic lab in the basement..... Peter Link to comment Share on other sites More sharing options...
Roz Posted November 22, 2011 Share Posted November 22, 2011 Those are absolutely stunning! The rainbow-colored tooth is incredible.. What a treat looking at all those! Welcome to the forum! Link to comment Share on other sites More sharing options...
pleecan Posted November 26, 2011 Author Share Posted November 26, 2011 Hi Peter, We can do the hand off in Spring 2012. Keep in touch so we match dates. Peter, are you careful no direct sunlight gets in you camera room? There are enough lens there to be sure and start a fire! Thanks John. That is a valid concern with optics....The basement windows are at the top and covered with aluminium blinds.... in closed position at all times...... the cameras there are live view cameras... most do not optical view finders to transmit stray lights.... PL Link to comment Share on other sites More sharing options...
pleecan Posted November 26, 2011 Author Share Posted November 26, 2011 Those are absolutely stunning! The rainbow-colored tooth is incredible.. What a treat looking at all those! Thanks Roz and they were imaged with the first generation of optics.... a yr later now the optics are even better today.. PL Link to comment Share on other sites More sharing options...
pleecan Posted August 31, 2012 Author Share Posted August 31, 2012 New technology Light Field Camera from Lytro : Harding Micro Fossil images. http://pictures.lytro.com/pleecan/pictures/347802 Link to comment Share on other sites More sharing options...
Nandomas Posted August 31, 2012 Share Posted August 31, 2012 Peter, that formation is VERY important in the American paleontology record. Maybe in that formation there are the oldest shark remains (dermal denticles) in Usa. Anyway great photos, as usual Erosion... will be my epitaph! http://www.paleonature.org/ https://fossilnews.org/ Link to comment Share on other sites More sharing options...
pleecan Posted September 1, 2012 Author Share Posted September 1, 2012 Peter, that formation is VERY important in the American paleontology record. Maybe in that formation there are the oldest shark remains (dermal denticles) in Usa. Anyway great photos, as usual Thanks. Yes Nando , there are shark denticles there in the above photo.... Link to comment Share on other sites More sharing options...
pleecan Posted September 9, 2012 Author Share Posted September 9, 2012 Image of Harding Ordovician Conodont: https://pictures.lytro.com/pleecan/pictures/358910#./358910?&_suid=678 Link to comment Share on other sites More sharing options...
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