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From the album: Post Oak Creek
Micro shark teeth fossils found in micromatrix collected 9/28/19. Clockwise: The upmost orange one is nurse shark (Cantioscyllium sp.) with intact root, goblin (Scapanorynchus sp.), crow (Squalicorax sp.), Hybodus sp., and either Cretodus sp. or goblin. -
Hey y'all. I haven't seen anyone post about POC microfossils, so last time I was there I filled a sandwich bag full of gravel. I looked through it yesterday and found a bunch of neat stuff: sawfish oral teeth (see gallery), tiny sharks' teeth, vertebrae, fish teeth, mastodon ivory (?), bone, etc. There's this one tooth that I can't i.d. I'm not sure if it's sawfish, I don't think it's a shark. Thank you!
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From the album: Post Oak Creek
Tiny oral teeth from extinct sawfish. I haven't seen many posts about POC microfossils, so I decided to see what's there. I filled a sandwich baggie with gravel last time I was there and found these and a ton of other neat stuff. Scale bar ~ 1 mm.- 2 comments
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These things are very small and difficult to find but I came across a stone that was littered with hundreds of forams and these spicules. I don't recall seeing anything that look like a sponge so I'm very curious as to why there were so many of these spicules being found in this stone that was found in a desert.
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How to properly dissolve matrix to reveal microfossils? Tips & tricks needed
ziggycardon posted a topic in Micro-paleontology
Hi, a few days ago I went on my first ever fossil hunting trip to Eben-Emael, a Limestone quarry in Belgium that dates to the Maastrichtian and is part from the type location (the historical ENCI quarry being only a 3,5 km to the north. The trip was orginized by the BVP (Belgische Vereniging voor Paleontologie) and a short report of the trip with phot's and some of the finds can be found in this topic by @Manticocerasman who I was lucky enough to tag along with, cause I doubt I would have found many mention worthy fossils without the guidance of Kevin. But since I am into microfossils I decided to collect some samples of the limestone without the obvious fossils home to later be able to look for microfossils as it should be quite rich. I think I have around 1 - 3 kg of matrix left to look for microfossils. But I have never myself dissolved matrix, and although it seems easy, I don't want to make any mistakes. During the trip they advised me on two different approaches, depending on what kind of fossils I wanted to find. One approach was dissolving in water and the other in vinegar, but now the seeming obvious question. How exactly do I do that? Should I just take a bucket of a glass, fill it halfway with said liquids and just wait? Or should I use a sieve and lay the block there so only fossils remain in the sieve and the rest goes to the buttom. Does the limestone just dissolve or does some kind of putty residu where the microfossils will be in? If so, how to properly remove the fossils when you pour out the liquids without pouring out the fossils? I know I have many questions and some might be very obvious and straigh-forward, but I really haven't done this before and I would like to do it the right way from start. So thanks in advance for any tips & tricks, I would really appreciate any help!- 4 replies
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The first 8 are echinoids and echinoid spines, I have seen plenty of photos of them while researching forams. Doctor Mud.....I can not confirm it but I do think you may be right about the last two being some sort of echinoid, This thing is only about a half a millimeter in size, I can't find anything online that looks like it but will keep at it.
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Hoping some of the pros here are willing to share microfossil prep techniques or suggestions to journal articles on the subject. I have been hunting conodonts and the like for quite some time, but the glacial acetic acid digestion and pan and scan techniques have failed me. I experimented with HCl and H2SO4 in various concentrations, and even tried some ion exchange extractions ( which work on paper, but are lousy in practice)! This sort of fossil hunting has become vendetta for me and I suspect I am using the wrong search terms in the academic data bases. I'll be on an excursion until the 26th of July, but I'm going to try and check in here from Spanish Fork or Delta. (And hopefully have some non-nebraska samples to work with and turn my students loose on!)
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Another day hunting in Wyoming's Lance formation proved more successful than yesterday. Due to the high amount of rain Wyoming has been facing this year, many would be exposures were grassed in. We started at a channel deposit which was producing a number of bone pieces. Although bones were relatively plentiful, there were no spectacular finds with the best being a thescelosaurus vertebra found by another member of the group. My best find from this hillside was a section of Triceratops jaw, a partial crown found in the conglomerate where the fossils were eroding from. and some variety of small animal limb bone (reptile or mammal). Here are some pics from this site A hadrosaur spit tooth A piece of softshell turtle shell A bivalve The Triceratops crown After most of the people had left the site, I explored the surrounding area and found an anthill which proved to be very bountiful in the microfossils it produced. I found several small crocodilian teeth, a tiny myledaphus tooth, a gar tooth and a potential mammal tooth.
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Yesterday I was picking through an incredible recent sample from Dogs Bay, Ireland which contains an abundance of foraminifera, ostracods, spicules, gastropods and echinoid spines and have been wondering about how I am going to arrange them on my slides. I am relatively new to microfossils and use microfossil slides with 32 grids. In this instance, is it more common protocol to create separate slides for each type of microfossil (e.g, slide 1: forams, slide 2: ostracods etc.), or to just create a mixed slide that may be more representative and also more interesting to look at but which also makes it harder to logically organise? How do you organise your microfossils on your slides? I hope my question made sense, thanks!
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Hi, here is a bunch of tiny beauties from Texas (Lake Bridgeport). If somebody can help ID the gastropods at 1:40 and a crinoid at 4:20, it would be much appreciated.
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Microfossils Retrace Antarctica’s Glacial Past (Ross Sea)
Oxytropidoceras posted a topic in Fossil News
Retracing Antarctica’s Glacial Past LSU geologist uncovers new data to inform future sea level rise https://www.lsu.edu/mediacenter/news/2018/09/25gg_bart_scireports.php https://www.sciencedaily.com/releases/2018/09/180925140417.htm https://phys.org/news/2018-09-retracing-antarctica-glacial.html The open-access paper is: Bart, P.J., DeCesare, M., Rosenheim, B.E., Majewski, W. and McGlannan, A., 2018. A centuries-long delay between a paleo-ice-shelf collapse and grounding- line retreat in the Whales Deep Basin, eastern Ross Sea, Antarctica. Scientific reports, 8(1), article 12392. https://www.nature.com/articles/s41598-018-29911-8 Yours, Paul H. -
ID requested: lower permian vertebrate fauna from Texas red beds & Waurika
ziggycardon posted a topic in Fossil ID
Hi! I recently acquired a few new additions to my permian collection, but there are a few pieces of which I am not a 100 % whether they are ID'd correctly, simply because I am not yet knowlegdeable about the material. So I thought it might be a good idea to post the ones I am doubtfull about here, as I know there are a lot of people more knowlegdeable than me who probably could ID them. The first item is a small claw listed as "juvenile dimetrodon limbatus" from the Red Beds, Archer County, Texas, USA I was a bit doubtfull when they said "juvenile" dimetrodon claw, but I got it anyway because it's a very nice permian claw which was an okay price regardless the ID. The second item is a caudal vertebra that was listed as "Edaphosaurus" (from the Archer City Formation, Red Beds, Archer County, Texas, USA) which came as a set along with a piece of sail spine which without doubt belongs to Edaphosaurus. The last items were sold as a collection of "Eryops megacephalus" fossils from the Wellington garbar complex, Waurika, Okhlahoma. From left to right are a piece of skull plate, a toe bone, a piece of dermal armor and a tooth..jpg.55ea96495e8bec4c4e80bfd13ca0d545.jpg)
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ID requested: Triassic Bull Canyon Formation microfossil teeth (Norian Age)
ziggycardon posted a topic in Fossil ID
Hi! I recently aqcuired quite a lot of "microfossils" to kick off my Triassic collection, as I personally find it one of the most interesting time periods and while I am aware possibly not all of them are ID'd correctly I just wanted to get some nice fossils from this time period regardless of their ID's. All the fossils I acquired are from the Bull Canyon Formation, Dockum Group, San Miguel County, New Mexico, USA (Norian age) But I myself am not very knowledgeable yet in this material as I just started my collection but I am aware that some if not most of the ID's on these fossils given by the seller might be wrong as everything I read about the Bull Canyon formation says that the formation isn't that well discribed yet. I tried to make the photo's as good as I could, but it wasn't always easy given their extremely small size, so I hope the quality is good enough to work with. So I am kinda hoping is someone here on the forum would like to give it a try to see if he/she could confirm or disprove given ID's. Thank you in advance! The first set of 2 teeth were listed as the Phytosaur "Pseudopalatus" teeth which after doing a bit of research is considered a junior synonym for "Machaeroprosopus" The next collection of 3 teeth were listed as the Pseudosuchian "Revueltosaurus" The next tooth was listed as a "Theropod indet" tooth, and I know there are at least 2 species of theropod present at Bull Canyon, a Coelophysid called Gojirasaurus and a herrerasaurid called Chindesaurus. But I am not even sure whether this tooth is dinosaurian or not. The next set of teeth were listed as "Arganodus" lungfish teeth And the final tooth was listed as a "Sphenodont" (Rhynchocephalia indet.) tooth with affinities to Clevosaurus (which is found in Nova Scotia, Great Britain and China).jpg.c21fd51aec9f6112713a83e42aadaa97.jpg)
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https://www.geek.com/news/scientists-discover-tiny-fossils-of-oldest-known-frog-relative-in-north-america-1776396/?source=science
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Looking for a Stereo Microscope in Europe
The Wellsite Geologist posted a topic in Micro-paleontology
Hi everyone! I'm looking to buy a Stereo Microscope in Europe for microfossil observation and was wondering if anyone can point out recommended brands. The price range for me is <400 Euros. Thanks! -
The Nerdiest Christmas Cards Ever May Be These Microscope Slides Composed of Shells The unusual holiday exchange, which lasted decades during the early 20th-century, hints at the drama between the two colleagues Smithsonian By Allison C. Meier, December 17, 2018 https://www.smithsonianmag.com/history/two-scientists-exchanged-christmas-greetings-microscope-slides-180971049/ A century ago, two scientists exchanged fantastic microscope slides as Christmas cards https://boingboing.net/2018/12/17/a-century-ago-two-scientists.html Yours, Paul H.
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The Nerdiest Christmas Cards Ever May Be These Microscope Slides Composed of Shells The unusual holiday exchange, which lasted decades during the early 20th-century, hints at the drama between the two colleagues Smithsonian By Allison C. Meier, December 17, 2018 https://www.smithsonianmag.com/history/two-scientists-exchanged-christmas-greetings-microscope-slides-180971049/ A century ago, two scientists exchanged fantastic microscope slides as Christmas cards https://boingboing.net/2018/12/17/a-century-ago-two-scientists.html Merry Christmas everybody, Paul H.
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G'day everyone! My dad and I were interested in investing in a USB Microscope to take photos of our smaller fossils and other things (Mainly small insects). We did some searching about and found this microscope. Before I purchase it I want to see what you all think and if there is a better option. https://www.online.com/p/AmScope-UBW500X0200M-5x-500x-2mp-8-led-3d-Zoom-Digital-USB-Microscope/2255356843 Thanks, Dan
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A Series Of Unfortunate Experiments On Fracking Fossiliferous Rock
mikecable posted a topic in General Fossil Discussion
This series of unfortunate experiments may well turn into some fortuitous knowledge. Maybe. Unfortunate in that I acted likea sixth grade scientist when I started these experiments. No protocols whatsoever--I just went wild. I should be starting this thread with a picture of a rock. But I wasn't sure where the rock came from in the first place, and then I messed with the rock. And messed with the rock some more. But I should at least end this post with some picture of the rock. Best I can do tonight. Tomorrow will come the story of the unfortunate rock. Which does appear to be very fossiliferous.
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Here are some small fossils I found back in the summer of 2017 in Montana up in the Judith River Formation. 1. Small reptile vertebra? (.5 cm) 2. Assorted tiny bones several of which are likely from birds. 2a. Hollow at the broken end (about .8 cm). 2b. Hollow at both ends (1.2 cm). 2c. Hollow at both ends as well, looks like limb bone. (1.5 cm). 2d. Appears to be hollow on both ends (.7 cm).
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Last summer on my trip out west, I found these teeth at a Lance Formation microsite in Wyoming. Many of the fossils were found through splitting a yellowish-orange concretion filled matrix, while others were free from it. This site was on the same ranch where I found my theropod hand claw but in separate locality. It's rather late (EST) at the time I'm posting this but wanted to show some of the teeth I found and was hoping I could get some help identifying them. 1. Pectinodon bakkeri 2. Richardoestesia sp. (?) 3. Lizard/ Worn Herbivorous Dinosaur Tooth (?)
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Keeping track of tiny fossils has been difficult for me, but penny holders have been a real help. I have begun using picture frames to hold and display my fossils in penny holders. These frames are 5x7 inches. The primary use I have made of the holders is for small pieces of shale each of which contains a conodont.
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Hi all, A handful of days ago there was a sand pile right in my neighborhood. Not sure why it was there, probably someone was making constructions to their house, but in any case I was happy. That's because that kind of sand comes straight from the North Sea, which is full of Eemian fossil sediments! So I took a little plastic bag and spent an hour or two looking in that pile of sand for fossils. The very common Eemian bivalves came up abundantly (so species like Mactra plistoneerlandica, Cerastoderma edule, C. glaucum, Macoma balthica, etc), but that is not what I was too excited about. Seeing that the sand pile was rather small, it forced me to focus on just that little pile. Which is great, because therefore I actually started looking much more closely, and hereby also collecting tiny micro-fossils! Lots of gastropods, which is awesome because these are not as common as bivalves in these sediments. I namely found a complete yet puny Anomia ephippium, some very small Cerastoderma's, and also the ones attached. I would love to be able to bring these down to species level. So I am asking for your help! The Hague, Netherlands (from North Sea sediments) Eem Formation Eemian, Pleistocene; 120'000 y Thanks in advance, Max #1: Looks a little bit like Macoma balthica, but still a bit different... Very likely from the Tellinidae
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Hello Everyone! My name is Nathan and I am getting newly acquainted with the fossil community. I work for a company that manufactures sandblasters which is how I came to find this forum while on my journey into the fossil world. I have always been an avid museum goer and especially like Trilobites and other microfossils out there. I have special insight into micro-abrasive sandblasting and dust collection systems used in a variety of preparation environments and would be happy to help anyone who has questions regarding that. Other that than I hope I can supply some interesting techniques and preparation "hacks" that are helpful. Nice to meet you all! -Nathan Frey
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Holocene Planktonic Foraminifera from the Dry Tortugas, Part 2
Rumi posted a blog entry in Microfossil Mania!
Since the upload of Part 1 succeeded, I'll now offer up Part 2, a look at two interesting taxa from the family Globigerinidae. This family contains most of the taxa that we associate with the idea of "planktonic forams", perhaps due to our familiarity with the "globigerina oozes" that form a significant part of the floor of the modern world oceans. Globigerinoides ruber (d’Orbigny, 1839) is one of the two “red” species of globigerinids, as the specific epithet indicates. It is well-known that the color of individual specimens varies from white to pinkish-red, and it is typically the case that only some of its globular chambers exhibit the red coloration. I have specimens with all white chambers, one red chamber, two red chambers, etc., and have a single individual that is all red. Interestingly, the intensity of the color seems to increase with the number of chambers affected, so the all red specimen is very red indeed -- it is also a little smaller than average. Here is a typical specimen seen from the umbilical side, in a slightly oblique view, showing the primary aperture and one red chamber: The genus Globigerinoides differs from Globigerina in that its species exhibit secondary apertures, formed at the junctions of the spiral suture with intercameral sutures: Here is the spiral side of the same specimen, again presented in an oblique view, with two supplementary apertures, two red chambers at the left, and a pale pink one at the right. The top, final chamber is white, as is most frequently the case. This taxon is the commonest foram in the sample, by a large margin. The other red globigerinid is Globoturborotalita rubescens (Hofker, 1956). According to the World Foraminifera Database, it also occurs in the Gulf of Mexico, but I have seen no specimens in my sample as yet. This taxon shows four chambers in the umbilical view, rather than three, and lacks the secondary apertures. A second interesting globigerinid, quite different from the preceding, is Globigerinella siphonifera (d’Orbigny, 1839). This genus exhibits planispiral forms, rather than trochospiral -- all of the chambers are in the same plane. (Actually, the test begins growth in a trochospire, but quickly switches growth pattern to planispiral.) There is a primary aperture at the base of the final chamber, and in fully mature specimens like this one, the initial chambers enter the final one through the primary aperture: The final chamber appears to be “gobbling up” the initial chambers, like the snake that swallows its own tail. In Part 3 of this entry, I’ll examine three taxa from the Family Globorotaliidae. Stay tuned.......
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