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Found 18 results

  1. Most of my fossil collecting has been Invertebrate Macrofossil collecting. Very little attention has been made to the little fossils. It is always a good idea to expand your knowledge, leave your comfort zone, go somewhere you have never been before. I find that not paying much attention to Microfossils has been a mistake. So when I saw an interesting Nummulites fossil slab for sale; I chose to purchase it. The rough cut specimen looked like it could reveal more, with a little attention. What I chose to do is give it a good high luster lap polish to see the results. So much more detail was made. Where my specimen came from was Northern Spain, in or near the Pyrenees Mtns. near Aragon. The seller didn't give much info and what he did give was in Spanish. Chasing information down on the internet I found the mixed fossils were Nummulites sp. (large ones) and Alveolina sp. (smaller ones) I have some photos of my results to share. Before polishing it looked like this: After polishing the fossils clarified, here are some closeups: Apparently these fossils are common in Spain, neighboring France and other places in the world. This is an old engraving: In Spain, the Limestone the Nummulites are in, is used as building materials like blocks, steps, pavers. I will need to do more studying of these neat looking spiral tests.
  2. I have found quite a number of these ranging from 1-4 mm or so. They are from the Kansas City Group of the Pennsylvanian Subsystem. I don't know the name of the strata, but for the locals, these come from the road cut about 1/4 mile west of I-49 on Route 150 near Belton, MO. I have found them in large (three to six inch) nodules. I will appreciate any help you can give me with identification? Russ
  3. I could use some help with the ID for these tiny fossils. I found them in the Pennsylvanian Subsystem, the Kansas City Group, at the top of the Winterset L.S. Member and at another site in the Kansas City Group that I cannot identify (I don’t know what it is). Most of the specimens I have found were in fist-size nodules of tan/yellowish limestone. These specimens are all around 1 cm in size and the tiny nodes/spines are 1 mm or so. After having seen dozens of these specimens, I have observed that most of them consist of a round disc about 1 cm in size with the tiny “spines” pointing towards the center. Picture #3, however, shows one that is elongated rather than round. In picture #2 I have circled the specimen with the "cap" still covering most of the spines in black and circled some of the exposed spines in blue. In picture #5 I circled and area that contains the "cap" under which are the "spines". I took these photos with my point and shoot camera on a tripod and my 10x loupe held against the lense. It works surprisingly well, yet as you can tell the pictures vary in quality and are hard to focus. I use a photo editor to crop the pictures so the images you see below are about 1/10 the area of the originals. Any tips you can give me on getting better pictures of tiny fossils will be appreciated. I look forward to any help you can give me. Russ
  4. its been days I am looking for a good way to make a complete image of thin section, so we can have a very big picture but very useful for some tasks. actually I need to make an image processing software then process thins sections automatically. I know pretty much about software part. but still got problems for making very good image. 1- I tried very high DPI scanner and the results were simply not acceptable as we have very small microstructures inside some microfossils. the image is below: 2- I tried making lots of images with camera on microscope then stitch images together. the result is pretty good but changing position of thin section and capture image takes lots of time still we have stitching time too. this is the result: 3- I know we have some special devices for these cases but they are very high price and mostly suitable for universities not for personal uses 4- anyway maybe the only option is making a little machine that can automatically move the thin section on the microscope stage then automatically capture photo. so any suggestions guys? if something is not clear please answer. thanks
  5. Hi all, Here is another fun find from Sacha's Merritt Island matrix. As usual, I don't have a clue as to what kind of tooth it is (or maybe it's a claw?). The area around the base of the tooth reminds me of something you'd see at the base of an antler. Sorry parts of the specimen are a little blurry in the photo. It was hard to decide what part to focus on. I looked up every carnivore I could think of and came up with nada. Any help would be greatly appreciated! As a side note, I would like to extend a special thanks to Julianna, Marco Sr, Tony, and PA Fossil Finder for posting all your wonderful photos. It is super helpful!
  6. Scale in photo is in mm. I'm thinking this may be a Ptychotrygon triangularis tooth. MIGHT be Ptychotrygon hooveri, but it looks to me to be a closer match to the triangularis. One of my latest finds while sifting through my load of gravel from Post Oak Creek.
  7. Found this odd claw-like bit today while sorting through gravel from Post Oak Creek. Any ideas as to what this might be? Scale is in mm. Dark photo just to show scale. Both sides of the object. The best shot I could get of the "proximal" end of the thing.
  8. This is my first "new topic" post to the FF, so I hope I'm doing this correctly. If you have a microscope or equivalent and a current or potential interest in micro-fossils, you might enjoy collecting at the following historic locality: Mississippian Salem Limestone, about 5 miles east of Salem, Indiana off Rt. 160; Spergen (Spurgeon) Hill, railroad cut (Manon RR) paralleling S. Harristown Rd, 0.75 mi north of Rt. 160; south end of Trackside Road; approximately 140 meters S of Harristown, Washington Co., Indiana; diminuitive fauna; Universal Transverse Mercator (UTM) coordinates: 16S 585024.04 4272332.25. My first introduction to micro-fossils was in a paleontology lab I took during the 70’s with the focus of study on the foraminiferid, Endothyra baileyi (now called Globoendothyra baileyi). These tiny specimens were labeled “Spergen Hill” on their container without further description. A few years later, I was able to locate the source of the specimens as the type locality for the Salem Limestone (formerly, Spergen or Spergen Hill Limestone) of Middle Mississippian or Meramecean (Valmeyerian) age. Sratigraphically, it sits above the Harrodsburg Limestone and beneath the St. Louis Limestone. The locality is a railroad cut at Spergen Hill, just south of Harristown, Washington County, Indiana. The cut is relatively narrow and much caution is advised upon the advent of trains entering the cut. The rock at this locality is a medium to coarse grained, tan to gray, crossbedded calcarenite containing mostly microfossils. Macrofossils (somewhat sparse) are present in the formation but nowhere near the quantity of the microfossils (G. baileyi has been estimated at 1,000 / in3 in some portions of the strata). Besides single-celled eukaryotes (e.g., Globoendothyra), representatives of most of the major phyla are present in diminuitive form or as tiny fragments of the macro fauna (spines, plates, columnals, etc.) I’ve visited the location at least three times in the past and besides collecting macrofossils on these visits, I have also accumulated a quantity of the rock containing the microfossils. On arriving home, I pulverize the collected rock with a sledge to a fine granular size and wash and strain the residue through a porous cloth to remove any extra fine material (rock dust) The washed residue is then dried and placed in labeled plastic bags. Then, in the dead of winter when collecting is not possible for me and the “urge” to collect is compelling, I drag out a bag, place some of the residue in a shallow container under my scope and go fossil collecting and identifying! I use a very fine-pointed forceps, which I periodically ground to a piece of rubber (to avoid static electricity buildup) to pick out fossils from the residue. I find it a bit better for collecting the micros from this locality than using a wetted fine paintbrush. This location has been estimated to contain over 100 species of invertebrates on a micro level. More information can be found at http://www.fallsoftheohio.org/SalemMicrofossils.html. The attached photos were taken for a program I was giving on Indiana fossils to illustrate single-celled eukaryotes (Protozoa). The first photo shows a random selection of micro-specimens of various phyla collected from the residue with an emphasis on the G. baileyi. The second and third show sorted G. baileyi specimens and G. baileyi specimens with matrix, respectively. Two free texts with plates are available on some of the Spergen Hill microfauna at the following websites: Whitfield, R.P. On the fauna of the Lower Carboniferous limestones of Spergen Hill, Ind., with a revision of the descriptions of its fossils hitherto published, and illustrations of the species from the original type series. Bulletin of the AMNH; v. 1, article 5. (free download) https://books.google.com/books?id=ebYPAAAAIAAJ&pg=PA241&lpg=PA241&dq=whitfield,+R.P.+On+the+fauna+of+the+limestones+of+Spergen+Hill&source=bl&ots=iFhHvpc7qf&sig=XNpUBo45hKPRICv5fLdb0AlJktA&hl=en&sa=X&ei=pO8_Ve70G-vlsATq-4EQ&ved=0CCQQ6AEwAg Cumings, E.R. et al. Fauna of the Salem Limestone of Indiana. (free download). https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0CB4QFjAA&url=https%3A%2F%2Fscholarworks.iu.edu%2Fdspace%2Fhandle%2F2022%2F12889&ei=G_o_Va3_CveasQSCu4HADA&usg=AFQjCNGsTNbr2RKBBebd6bnuISOcqvMsPw
  9. I collected some micro-matrix gravel while hunting a site in the Peace River that had a good abundance of mammal fossils. My hope was that there would be some micro mammal fossils as well. I seemed to have guessed correctly as I turned up this nano molar which I assume is rodent based the size (~1.7 mm diameter across the occlusal surface x 2.7 maximum height to the end of the one remaining root). I tried to get a clear image of the occlusal surface but believe me something this small is hard to hold and keep in the focal plane. Would be interesting to see if Rich or any of the others who might know their tiny mammals can make an ID on this little speck of a fossil. -Ken
  10. Thank you, sixgill pete, for the small USPS box of fine Lee Creek Mine matrix from North Carolina. This was my second batch of Lee Creek matrial (the first from jcbshark), and I was hoping to fill in some gaps in the species in my Lee Creek Mine collection. This material delivered, and I was able to add several species to my "got it" list Here are my best guess at IDs for some of the better specimens found. There is some overlap from this batch and the previous batch. As always, corrections to any IDs are welcome. IDing was done using elasmo.com, aurorafossilmuseum.com, fossilguy.com, several TFF member posts about Lee Creek and North Carolina (brachiomyback and MarcoSr) and the two Geological Survey Papers "Mollusca from the Miocene and Lower Pliocene of Virginia and North Carolina: Scaphopoda and Gastropoda" and "Mollusca from the Miocene and Lower Pliocene of Virginia and North Carolina: Pelecypoda" Scaphopoda and Gastropoda 1) 2) 3) 4) 5) 1) Arene pergemma 2) Mitrella lunata 3) Turritella alticostata 4) Dentalium carolinense 5) Gastropod internal cast Pelecypoda 6) 7) 8) 9) 10) 11) 6) Mulinia congesta 7) Glans tridentata decemcostata 8) Astarte sp. 9) Mysella sp. 10) Plicatula marginata 11) Discradisca lugubris Rays and Sharks 12) 13) 14) 15) 16) 12) Dasyatis sp. 13) Ray barb 14) Carcharinhus sp. 15) Carcharias sp. 16) Hemipristis curvatus 17) 18) 19) 17) Galeocerdo aduncus? 18) Isurus sp.? 19) Hemipristis sp.? Fish 20) 21) 22) 23) 24) 20) Chilomycterus sp. 21) Pogonias sp. 22 - 24) Sparidae sp. Other 25) 26) 27) 28) 29) 25) Balanus sp. 26) Coprolite 27) Crab claw 28) Echinoid spine 29) Echinoid test Puzzlers? 30) 31) 32) 33) 30) Dophin tooth? 31) This was joined together like a zipper when I found it, but it has since separated? 32) It is symetrical, the reverse looks the same, almost arrowhead shaped, but looks natural and bone-like. 33) Sand dollar internal structure?
  11. From the album Foraminifera

    Globotruncana linneiana (d'Orbigny, 1839) spiral side indicative for Campanian to Upper Maastrichtian found reworked on the beach near Tunis, Tunisia http://www.foraminifera.eu/miliane.php

    © © Foram-Mike

  12. Got a snall sample of so-called "star sand" from Taketomi,Okinawa,Japan, that was loaded with some of (I think) the most beautiful forams: 99% of the sample consists of 2 species, Baculogypsina sphraerulata & Calcaroides spengleri; Went thru my inventory of forams & found some examples of their fossil kin: unfortunately, like any other fossil, the Miocene & Cretaceous ones have suffered a lot of wear & tear, but hopefully you'll be able to view & compare. Don't know if the images do them justice. Each foram is about the size of a grain of sand. [attachment=18991 8:foram1a.jpg]
  13. I just started getting into microfossils this last couple weeks, I have an AmScope Stereo microscope and regular microscope. I started with trying to take photos using a Celstron digital imager that was 2MP but the picture quality was predictably bad, plus it over magnified the image past what I wanted. Higher res digital imagers quickly outpaced my pocketbook. I then purchased a bayonet mount 0.5x relay lens for my Canon DSLR to mount onto my Stereoscope. After much fine tuning, I am happy to showcase my first serious attempts at microfossil photography! These pictures are of specimens from Oxford Clay (Jurassic) pre-seived to 1mm. I purchased the material pre-seived and then sorted through and recovered the shown specimens:
  14. Hello, As I am sorting through my Oxford clay micro fossil material, there are a bunch of seemingly related items that I have not been able to ID. I have included pictures of two pieces that I think are different parts of the same type of specimen. Most of the pieces I have found are straight or slightly curved sections of roughly square cross section (spec 1) with a circular interior that sometimes bloom out into the odd lumps you see in the other picture (spec 2). I am assuming its something quite common and silly as I have found dozens of them, but I just have not been able to ID them yet. They are in the roughly 1mm size range and come from pre-seived Oxford clay Jurassic period:
  15. Hello! After recently venturing into the wonderful world of micro fossils, I have found a few items I have no idea what they are. Included below is four pictures of one such item, found in pre-seived (to 1mm) sample of Oxford Clay (Jurassic). The item is very 3D and the fluted design on the indent on one side are particulary smooth and stunning under the microscope (which is not done justice in the pictures). The pictures show both sides, and some of them are taken on top of the date on a penny for scale. Also, any decent resources for microfossil identification? I havent been able to find much online. Thanks in advance for any help!
  16. This forum seemed like the perfect venue for sharing some microfossils from my collection. I'll start with this one: ; some small specimens of Epitonium sayana from the Upper Miocene St.Mary's Formation, found at Windmill Point in St.Mary's County,Maryland. Scale is in mm. These appear very polished & translucent, with delicate varices encirling the spire. Amazing what you can find in a couple of scoops of beach litter when all the big stuff has been picked over....
  17. Hi everyone, I would like to shear my blog on micropalaeontology with you, and I hope you find it helpful. It is my honour to receive and shear your opinion in micropaleontology. The blog needs time to be completed, and I am ready to know your suggestions about it. Link: Micropalaeontology Blog Regards, Majed
  18. Looking through Permian microfossil material from Waurika, Oklahoma - Wellington Formation, I found what appears to be a barbed tooth. I cannot find ID on this specimen on the internet and am asking for help on this one. Thank you