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Found 544 results

  1. Eusphenopteris?

    I was hiking in Berkeley county WV and last week and came across this fern fossil? I'm a neophyte when it comes to fossil ID but wanted to know if anyone could give me some idea of what I found? Thanks, Matt Orsie - Hedgesville, WV
  2. Ammonite tease

    I was up in Cloudcroft on an errand and thought I might as well drive a few miles along Forest Service Road 5661, just south of the town. Here, Pennsylvanian sedimentary rocks are exposed along the cuts of the gravel road. You see a lot of pieces of fossils, but so far, anything remotely approaching whole has escaped me. Also, the rock does not seem to fracture in any kind of systematic plane, but rather at random and often right through the center of a fossil, leaving a thin section exposed and not a "half." But the stuff is there. It is frustrating. And then this thing ...
  3. Carboniferous Midcontinent

    Concise & clear.What more do you want? algeidcontin143.pdf About 1,5 Mb
  4. I had forgotten I had found Worthenia fossils of this size at the Jacksboro Pennsylvanian period Finis Shale site. Found these probably on my first or second collecting trip to that site 5 or 6 years ago. I have boxes of stuff I haven't looked in for years. Finding stuff that's surprising me.
  5. Another grouping of fossils from the Pennsylvanian Finis Shale Site near Jacksboro, Texas. Always something to find there.
  6. Found this somewhat flattened Brach (Derbyia crassa) in the Pennsylvanian age Finis Shale formation at the Lost Creek Reservoir borrow pit near Jacksboro, in Jack County, Texas a couple of weeks ago. It's not perfect but I love fossils that are still in the matrix and that aren't pristine and show signs of predation and deformation from the weight of the overlying matrix.
  7. I'll be in north central Texas all next week and I was hoping someone could help with some accessible spots for the Bridgeport Shale. Any other recommendations are also welcome. My e-mail is tngray@nautiloid.net
  8. Cordaites w/ Artisia

    From the album icycatelf's Backyard Fossils

    Cordaites with Artisia Hyden Formation Middle Pennsylvanian Eastern Kentucky 5.6cm (length) Fossil from a Cordaites tree with pith (Artisia) exposed
  9. Zig-zag impression

    couldn't get a good pic because of shadows...went back and shoved some clay into it. What is it? Thank you.
  10. Cordaites borassifolius.jpg

    From the album MY FOSSIL Collection - Dpaul7

    Cordaites borassifolius plant Poland, Upper Silesia Carboniferous, Westphalian "C", Middle Pennsylvanian, Moscovian, (309.0 -305.9 million years ago) Dimension: matrix 65x65mm. Cordaites borassifolius was probably quite a large tree of monopodial or even sympodial stature. Its trunk diameter was at a minimum 0.5 m. Branches were between 1.1 m and spaced less than 0.7 m appart. The bases of the branches usually attained about 2/3 to 1/2 of the trunk width. The abaxial cuticle has stomata arranged in multiplex stomatal rows that formed a wide stomatiferous band. A transverse crypt above the stoma is an important diagnostic feature. The cordaitalean leaves, twigs, pith casts, fertile organs and seeds found are referable to a single natural species. The associated fertile organs belong to two types: 1) male fertile organs Florinanthus volkmannii and 2) a more robust, probably female, form similar to Cordaitanthus ovatus . Cuticles from the scales and long bracts of Florinanthus volkmannii have been studied in detail. Most scale cuticles are astomatal, but stomata may occur very rarely on some parts of the abaxial cuticle. Small trichomes grew from the scale margins. The cuticle of the bract has elongate cells and stomata are arranged in single stomatal rows on the abaxial cuticle. Many bilateral monosaccate pollen grains [ Florinites ovalis , Florinites guttatus and Pseudoillinites , with a central body bipolar attachment to the equatorial saccus were separated from scale surfaces of Florinanthus volkmannii . The pith cast belong to the species Artisia approximata . The seeds are small and of the " Cardiocarpus- type". Cordaites borassifolius grew in wet, peat-forming habitats and they were most likely trees of medium height. Kingdom: Plantae Division: Pinophyta Class: Pinopsida Order: Cordaitales Family: Cordaitaceae Genus: Cordaites Species: borassifolius
  11. This is a drawing I made a couple weeks ago. It is Euproops danae, a Pennsylvanian Horseshoe crab from the Mazon Creek (proper). My nodule is 100% complete with no restorations. Being a Mazon specimen, it comes from the Francis Energy Shale and is about 300 million years old. This drawing was done on textured paper with 2B and 4B pencils.
  12. Lack of snow cover and warmer than average temps allowed me to explore and collect sponges and corals from the Pennsylvanian Naco Formation in central Arizona, north of Payson. Widespread chert of the Beta Member suggests that silicious sponges may have been common. Several have been identified but many more exist. I have seen and collected several undescribed species. Dilliard and Rigby have described several sponges including Chaunactis olsoni which I found in the area: The New Demosponges, Chaunactis olsoni and. Haplistion nacoense, and Associated Sponges from the. Pennsylvanian Naco Formation, Central Arizona. by DILLIARD and RIGBY http://geology.byu.edu/Home/sites/default/files/geo_stud_vol_46_dilliard_rigby.pdf EDIT: geo_stud_vol_46_dilliard_rigby.pdf Photo 1a. Detail of undesribed sponge. Marks are 1/16th inch. Any ideas? Photo 2. 3/4 quater view of sponge in photo 1a. Note red 1/3 to 2/3 inch thick pancake-like form of sponge. Photo 4. Top of another similiar sponge. Marks are 1/16th inch. Help me ID 2 corals and one sponge. Photo 3. Coral, Multithecopora?, which has been reported from the Naco many miles to the south. Photo 5. Probably Chaetetes, a side view. Photo 5a. Top of Chaetetes. Photo 6. Horn Coral, Zaphrentis? 1a.docx 2.docx 4.docx 3.docx 5.docx 5a.docx 6.docx
  13. Trepospira discoidalis (Newell 1935)

    From the album Gastropods and Bivalves Worldwide

    4cm. From the Pennsylvanian Lake Bridgeport Shale at Lake Bridgeport, Texas. Thanks to Dan Woehr for the gift!
  14. From the album Gastropods and Bivalves Worldwide

    The one at the bottom in the photo above. Together with Worthenia tabulata. 1.5cm. From the Pennsylvanian Lake Bridgeport Shale at Lake Bridgeport, Texas. Thanks to Dan Woehr for the gift!
  15. Worthenia tabulata (Conrad 1835)

    From the album Gastropods and Bivalves Worldwide

    3cm. From the Pennsylvanian Lake Bridgeport Shale at Lake Bridgeport, Texas. Thanks to Dan Woehr for the gift!
  16. Meekospira sp. (Ulrich & Scofield 1897)

    From the album Gastropods and Bivalves Worldwide

    4.5cm. From the Pennsylvanian Lake Bridgeport Shale at Lake Bridgeport, Texas. Thanks to Dan Woehr for the gift!
  17. Lophophyllidium sp. (Grabau 1828)

    From the album Corals

    5cm. From the Pennsylvanian Lake Bridgeport Shale at Lake Bridgeport, Texas. Thanks to Dan Woehr for the gift!
  18. Help with item from Pennsylvanian shale

    My curiosity has gotten the best of me, so I am submitting this crushed specimen for an ID even though it may be unidentifiable. The item is roughly circular and about 15mm in diameter. It split with the shale and the two smaller pieces of shale contain most of one half; the other half is seem on the larger piece of shale that is split down the middle (see the picture with the ruler). What intreagues me most is the shell-like material. This specimen is from the Stark shale of the Kansas City group in the Pennsylvanian subsystem. Any ID help will be appreciated.
  19. Jacksboro, Texas bivalve?

    Jacksboro, Texas Lost Creek Dam area, about 1 inch long, Pennsylvanian, Graham Formation, Finis Shale. Need help with ID. Thanks in advance for any help.
  20. Schnecken für Roger

    I woke up to 31F this morning...perfect kayaking conditions! Actually, winds were light, making the big water of Lake Bridgeport smooth as glass, so I stayed pretty dry on my 6 hour paddle trip into the Pennsylvanian Period. I canvassed a bunch of exposures above the waterline, and just as many below. The disconcerting factor since last trip a year or 2 ago was the explosion of zebra mussels. I don’t see a way of reversing this situation, and it hurts collecting more so than the onset of shoreline development. When water is up, they take over. And when it drops, forget about ever crawling for smalls again. All that said, I still found a ton of gastropods (for Roger Ludwigia’s entertainment), some horn corals, a few orthocone and coiled nautiloids, a couple nice goniatites, and one piece of pet wood. No trilobites this round but I did score a couple cruziana traces. More pics post prep. The matrix associations will be especially attractive. Figured below: Worthenia, cruziana, Aviculopecten, ornate orthocone nautiloid (?), Glaphyrites, and the total haul. @Ludwigia
  21. My Kansas City conodonts

    The past month or so I have had a chance to examine some shale from the Stark Shale, Dennis Formation, Kansas City Group. I have found many conodonts and I’ve enjoyed the challenge of taking pictures of them while they are still embedded in the shale. I think I have over 100 specimens now. Below I have posted some of my results. I have tried to identify the element position (P, S, or M) according to Purnell, Donoghue and Aldridge’s “Orientation and Anatomical Notation in Conoodonts,” Journal of Paleontology, 74(1), 2000, pp. 113-122, although I have not distinguished among the various S elements. In addition, I have attempted a bit of genus and species identification using Baesemann’s “Missouri (Upper Pennsylvanian) Conodonts of Northeastern Kansas,” Journal of Paleontology, 47(4), 689-710. I am just now beginning to experiment with dissolving the shale to extract the conodonts. I’ve had a some luck just using a 3% hydrogen peroxide solution from a local drug store. If I can figure this out, I should be able to get some pictures of extracted specimens. It has been fascinating and I’ve learned some interesting things. I have no training in biology or paleontology, and I am just a fossil hobbyist, so I expect that there are mistakes in my understanding of the terminology and in the ID of specific items. This is likely exacerbated by my superficial reading of the articles I mentioned above. So, feel free to correct me and I will be grateful. Just a few things about the pictures. The conodonts are in the 1-3 mm range. Second, the places where the conodont appears to be black are actually where the conodont is missing. Conodonts leave a detailed shiny mold if they are broken out or removed. Third, certain presentations are common others are less so. For example the P element seldom presents its dorsal view. Fourth, depth of field is a special problem for the P elements since they tend to bulge upward--and out of focus. I hope to continue to develop this post as my understanding grows and my specimens increase. I have numbered each picture by means of the comment above it. 1. S element
  22. First Fossil Hunting Trip(s)

    A break in the bitter winter cold gave me a bit of spring fever this week. Thursday I had to venture to Newport for an errand and the weather was a balmy 30-ish and sunny, I decided to go check out this location. Tides were favorable for hitting the beach this week and I took advantage. With the major storm that came through recently, I figured there might be some new rock eroded down to search through. Armed with only my brick hammer, goggles and gloves, I scoured through pieces for about an hour. The rocks here were pretty well saturated, and those that did not outright disintegrate trying to split them, only revealed mud and ice between the layers. I tried placing them in sunlight to dry a bit, but finding anything in the field was futile. I grabbed some small slabs that for whatever reason seemed promising and brought them home to split. While carefully splitting at the kitchen table, my 4 year-old took up brush-cleaning duties. It was a fun little project for lil man and I. The haul yielded some potential finds, and a thirst for a return adventure with the kids.
  23. Sponge ID

    What type is this sponge from the Pennsylvanian Naco Fm. from near Payson, Arizona? The silicified sponge is about 1.5 to 2 inches across. Was it originally a silicious or calcareous sponge? Does anyone know of an expert who is interested in undescribed sponges from Arizona/USA? I know of at least 3 other undescribed Arizona sponges. Thanks, John
  24. Hi, I am not a fossil hunter but accidentally discovered the ability to find 300,000,000 yr old fossils in Mazon Creek on a TV show. Wow!!! I've been researching all day and now want to take my family there for spring break in March! Our story (short) & my questions: My daughter is very interested in science and nature and critters. She spends hours outside digging contently for rocks, loves bugs, has rock collections, books on rocks & minerals, etc. She struggles in the classroom (3rd grade) and learns best by hands on experience. She would absolutely be in heaven here- our whole family would! I love to help my daughter experience her interests through our adventures. What advice could you give a family of 3 who has never hunted fossils? We are in Missouri so interested in camping close by- does anyone know of any good evening Camping places? Do we need to register with the state park and get daily admission? Should we go where most tourists go or off the beaten path? Is it possible for newbies to find a few fossils? Even if we found the most common we'd be so excited! We love exploring and take small hikes as a family. Are there spots within a couple miles of the "road" or parking? I truly appreciate any help! I will keep researching as well. I hope we can go and see this unbelievable history!!
  25. Mariopteris Fern Fossil 1.jpg

    From the album MY FOSSIL Collection - Dpaul7

    Mariopteris Fern Fossil Eastern Kentucky, USA Pennsylvanian Period (~330 Million Years Ago) The Medullosales is an order of pteridospermous seed plants characterised by large ovules with circular cross-section, with a vascularised nucellus, complex pollen-organs, stems and rachides with a dissected stele, and frond-like leaves. Their nearest still-living relatives are the cycads. Most medullosaleans were small to medium-sized trees. The largest were probably the trees with Alethopteris fronds - these fronds could be at least 7 metres long and the trees were perhaps up to 10 metres tall. Especially in Moscovian times, many medullosaleans were rather smaller trees with fronds only about 2 metres long, and apparently growing in dense, mutually supporting stands. During Kasimovian and Gzhelian times there were also non-arboreal forms with smaller fronds (e.g. Odontopteris) that were probably scrambling or possibly climbing plants. Kingdom: Plantae superphylum: †Tracheophyta subphylum: †Euphyllophytina unranked clade: †Radiatopses Family: †Medullosaceae Genus: †Mariopteris