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Showing results for tags 'pennsylvanian'.
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Poorly Preserved yet almost complete Neuropteris sp. (lindahli?)
Samurai posted a gallery image in Member Collections
From the album: Missouri Plant Fossils
A long time ago I had neglected to turn over a piece of Winterset limestone that contained ferns and to my surprise on the back was this specimen! I was told it could be a Neuropters lindalhi a couple of months ago and never uploaded it onto this site. -
From the album: Missouri Plant Fossils
One of many Cordiates fossils I have found. -
From the album: Missouri Plant Fossils
When this came out of the earth I was shocked by how many were bundled together as I mostly find only fragmentary pieces of one specimen. These have been identified as Neuropteris lindalhi (White) . The small limestone chunk on the left is a piece that came undone at the site I found this fossil at. More images of these fossils: https://imgur.com/a/KnjIeqG Correct id by Fossildude19 -
L.S., Pecopterid fossils from the Piesberg (Lower Saxony, DEU) are notoriously difficult to ID because the preservation does usually not show the venation (e.g., Josten 1991; PDFs of text and atlas volume). As a group, the pecopterids have also undergone quite substantial taxonomical revisions in the last few years based on material from other localities; not in the least from Mazon Creek (Illinois, USA). This makes identification of my Piesberg-pecopteris a rather daunting endeavour. Perhaps someone on TFF who has experience with the Mazon Creek pecopterids and most current nomenclatural changes would be willing to take a stab at them for me? Images can be enlarged by clicking on them. If photos of specific details are required, let me know and I'll do my best to provide them (but note that venation is often simply not preserved very well). Thanks in advance for any ID suggestions or tips you can provide. Kind regards, Tim Specimens TKTW0048 (left; "Spiropteris sp.") and TKTW0049 (right) Specimen TKTW0542 Specimen TKTW0651 - I'm not even sure this is a pecopterid... Specimen TKTW0826 (left) and TKTW0827 (right) Specimen TKTW1004 Specimen TKTW1078 (left), TKTW1079 (middle) and TKTW1082 (right) - all from same slab of rock (related?) Specimen TKTW1099 - "Spiropteris sp." but what kind of pecopterid is in the foreground? Specimen TKTW1099 - note fertile pinna on the right
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- asturian
- carboniferous
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I am going to start adding some images of my favorite finds which I call Collection Pieces. Identifications range from maybe, probably to most likely. I've only started to seriously collect over the past year. I've spent a great deal of time studying and learning Geology, as a hobby. I am located in Western Pennsylvania. At first, a map of the area. Anything in bright yellow is the Glenshaw Formation. The Ames Limestone layer exists between the Glenshaw and the Casselman Formations, which is the Orange color on the map. I have yet to explore the Ames Limestone, so I've only found fossils that exist in the marine zones below the Ames. Second and Third, are Metacoceras. The Fourth photo is of another Metacoceras. The id is slightly less likely as I can only see a few of the rounded spines. But I'm pretty sure it is one. Coming up next is a Mooreoceras that I found just this past weekend. I maintain everything on a website, that is listed in my profile. Thank you! Clint
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- carboniferous
- glenshaw formation
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Plant, Marine , or Burrow Fossil? Bishop's Cap, Organ Mountains, New Mexico
Jakk T posted a topic in Fossil ID
Please forgive my newbie ignorance. I just can't figure out what these are! Location: About 2/3 up Bishop's Cap at the south end of the Organ Mountains, New Mexico, April 2024. Research says it's probably from the Pennsylvanian era and in limestone. I suspect it's parts of a plant, although it could be a marine animal or burrow hole. Length and width 1 5/8 inches x 1/8 inches. Thanks!
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Pennsylvanian Cordaites principalis leaf and Cordaites borassifolius Stern bark
ntloux posted a topic in Member Collections
I am attaching an image of a Cordaites principalis Germar leaf nodule from Poland. It is from the GZW Upper Silesia Coal Basin-Sosnowiec and from the KWK "Porabka-Klimontow" closed mine. It is from approximately 315 MYA and is from the Westphalian A Zaleskie Beds. The second image is of Cordaites borassifolius Sternberg bark from the Westphalian B in the Upper Silesia in Poland. This is the best of approximately a dozen images taken and is not optimal but it does clearly illustrate the striations in the bark. Comments/suggestions from readers are welcome.
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- cordaites
- cordaites borassifolius
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This is my first post here. I’m not sure what I have here. Possibly fossil coral or some form of metamorphic rock. I live in south-western Indiana, Sullivan County specifically. It is my understanding that most rocks here date from the late Pennsylvanian. Terrestrial plant fossils seem to be most common here but these vaguely resemble coral. I’ve never seen rock like this before and would greatly appreciate if someone can help me ID this. Thanks guys.
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More from Bishop's Cap, Organ Mountains, New Mexico. Coral, other kind of plant stem, sponge root? Pennsylvanian era. Could not find any pictures like this for this area. Thanks again!
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I am attaching photos of Sigillaria fossils in my collection. Members of the Forum have been helpful before and as always, suggestions/comments/corrections are welcome. The first image is of a Pennsylvanian Sigillaria syringodendron specimen from Czechoslovakia. The second image is of a Sigillaria specimen from the Pennsylvanian in Eastern Kentucky. The third image is a Pennsylavanian Sigillaria specimen from the Westphalian in Czerwionka, Poland. The fourth image is of Pennsylvanian Sigillaria leaves from Podrovskoe, District of Donetsk Region, Ukraine. The contrast is poor but these leaves do have a remarkable similarity to grasses (although grasses did not evolve until hundreds of millions of year later). The last image is of a Pennsylvanian specimen from Kentucky that was identified by a helpful Forum member as a Sigillaria cortex specimen.
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- carboniferous
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In this thread I will be posting my best finds from Mazon Creek localities - so far I’ve only visited Mazonia-Braidwood fish & wildlife area and the Braceville coal mine spoil pile. “Mazon Creek beds” is a colloquial term for a Pennsylvanian Lagerstätte preserved in the Francis Creek shale member of Carbondale formation in several areas of Northern Illinois, including Mazon creek itself. Back 310 million years ago, that area was a river delta that preserved remains of both aquatic and terrestrial organisms in siderite concretions, that now (in the Holocene) you can find and open yourself to reveal the fossils. It is typically divided into two separate biotas - Braidwood, which is largely terrestrial, and Essex biota that is more marine. So far, I have only collected at Essex localities. So, I will start with by far the most common organism in the Essex biota - Essexella ascherae cnidarian, that was first thought to be a jellyfish and is now considered a sea anemone. They mostly preserve as “blobs” of quite diverse shapes. Here are some of my favorites - first, two large specimens from Braceville. This plate preserves 8 small individuals, also from Braceville. These two smaller ones are from Mazonia, Tipple hill area. Note that if Essexella was an anemone, they are positioned upside down in the pictures.
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- illinois
- mazon creek
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I am afraid to wash or try to clean it. Doesn’t look like other stromatolites I have found in Western Pa.
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- pennsylvanian
- Shale
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Found this in a Pennsylvanian-era formation. This is my first fossil hunt ever, so I don't even know if a lot of what I found are fossils or not. But this one was the most interesting. Found in some shale in a road cut near Jellico, TN. To me it looks like some type of millipede, or maybe some type of root system. Not too sure!
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Had a beautiful day hunting in southern Indiana. Found this large Cordaites and quite a few Calamites of all sizes.
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- Indiana
- Pennsylvanian
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One more from Bishop's Cap, if you don't mind. This looks like another marine plant that has filled with tuff. Looks like a bone, but certainly it is not. Outside is limestone, I think. Again, I cannot find any pictures that match up. Any feedback is appreciated.
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Last month I made my last trip for the year into Pennsylvania. I was hoping to stop at Swope Quarry in Mapleton, but the site is now posted. With a quick change of plans, I decided to travel even further west and visit some Late Pennsylvanian marine sites that I had planning on visiting on a different trip. The two sites I visited expose the Brush Creek Marine Zone, Glenshaw Formation, Conemaugh Group. They date to the Late Pennsylvanian (Missourian). Fossil collecting at these sites was a lot of fun as the fossils just pop right out of the surrounding shale and can be picked up by hand. But they are very fragile! I felt like Dr. Frankenstein putting some of the fossils back together. I always wanted to add a Worthenia gastropod to my collection so I was really excited to add a couple at one of the sites. By the time I made it to the second site the sun was already going down and I had a long drive home. I ended up bringing back a big block to break down, and I was astonished to find a Metacoceras fragment in it. I apologize in advance for some of the photos. As some may know, the gastropods of the Glenshaw Formation tend to be very small and dark, so it is challenging to photograph them. I used my new digital microscope on some of them. I hope you enjoy! I tried very hard to find a correct identification for everything. If you have a different identification, please let me know. Cephalopods Metacoceras sp. Pseudorthoceras knoxense Brachiopod Neospirifer triplicatus Bivalves Astartella concentrica Solenomya trapezoides Edmondia sp. Edmondia aspenwallensis Coral Stereostylus sp. Trace Worm Burrow Gastropods Worthenia tabulata Strobeus primigenius Euphemites vittatus
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- brush creek
- glenshaw
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As the temperatures are heating up in the desert I'll be moving more into the high country collecting. This will bring me to formations bearing ammonoids. My understanding is I'll be finding versions of goniatitic ammonoids as opposed to true ammonites that didn't emerge until the Jurassic? I'll be primarily hunting in upper Pennsylvanian or lower Permian formations. These will be new formations to me and difficult to determine the age. There are no stratigraphic maps for the areas I'll be searching to guide me. Hopefully I'll find additional marker beds or fossils that will help date the formations and make them easier to find by association. It appears that obtaining complete specimens will be rare as the best preservations seem to be in dense limestone. Here are a few remnants. Is it possible to discern the species from these limited portions? Also, is there a good link to understanding and being able to recognize ammonoids from the Pennsylvanian to Permian? From what little I can read from research papers for our geology they have not been studied well and there is little reference to them. The specimens range from the smallest being 150mm to largest being 200 mm (6" - 8") in diameter. I feel the preservation is generally nice but finding complete specimens will be pure luck. Thank you for any beginners tips and guidance. Kato
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- New Mexico
- Pennsylvanian
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From the album: Chondrichthyan Teeth From The Pennsylvanian Period
One of my teeth that I really want to identify. It was mentioned it could be a broken or partial Petalodont crown minus the root. 13cm in size -
I feel like I should know what this, but am drawing a blank. Pennsylvanian limestone from the Pedernales park in Texas, USA. Roughly 2x4cm
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Just got back today from my first trip to Mazonia-Braidwood (pit 11) this year! I unfortunately couldn't make it on the opening weekend, and was afraid we won’t find anything this late - but I ended up being pleasantly surprised. By this point I ran out of concretions to freeze-thaw from last year, so I’m very excited for the next few months We decided to go back to the Tipple hill area. Here is what it looks like now - open, barren fields of rocks 99.9999% of which are not what we are looking for. What I found especially challenging about this area, is that there are numerous concretions that have perfect shapes, but are not actually the right type of rock - yellow/light orange. I haven’t seen them at other places within Mazonia. I tried cracking a few last year, but they just have quartz (?) crystals on the inside. I guess they are not actually from Francis Creek shale? I forgot to take pictures, but would be curious to hear from people familiar with this. And of course, here are a few dinosaur eggs (the right type of rock) in situ Here is the total haul. Probably not a lot for this site, but this is definitely the most productive pit 11 trip I’ve had so far. Even better, unlike my previous visits, this time I found quite a few fossils in already open concretions. Here is a shrimp molt Both halves of a Calamites I think this is a Cyperites leaf These two halves of Annularia whorls cracked on the drive home And, of course, a neat anemone - Essexella ascherae. Surprisingly, this is the only one we found (so far). Will keep this thread updated with new fossils as I freeze-thaw the remaining concretions. I will also be back to Mazonia this weekend, but will probably go to a different site. I’m hoping this will become a mega-thread of all of my future Mazon creek trips. Out of all of the fossil sites I ever collected at, this is genuinely one of my favorites, if not the favorite - amazing fossils you can’t find anywhere else, plus instant gratification from finding concretions is always followed by delayed gratification over months of opening them. Here are my past trips to Mazonia and Braceville in 2023:
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- concretions
- illinois
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I was able to open some concretions from my recent trip to the Tipple hill area of Pit 11 (Francis Creek member, Carbondale formation; Pennsylvanian). Among them was this strange fossil - it looks to me like a cycloid, but I’m afraid it may be wishful thinking and it’s just a weirdly shaped coprolite. Would appreciate any suggestions! @RCFossils @Nimravis @deutscheben @Mark Kmiecik @stats
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- mazon creek
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A Fossil A Day....keeps the blues away! Or something like that... I started an Instragram account (jamielynnfossilquest) and am posting a fossil a day, so I figured I should do that on here, to REAL fossil enthusiasts! I'm a few days behind, so I will start out with a few more than one a day but then it will settle down to One Fossil (but I will admit, I'll probably miss a few days, but I'll double up or whatever.) I'll start with Texas Pennsylvanian era, but will branch out to other locations and time periods, so expect a little of everything! So enjoy A Fossil A Day! Texas Pennsylvanian Fossils: Nautiloid Agathiceras ciscoense Brachiopod Neochonetes acanthophorus Trilobite Ditomopyge sp. Gastropod Straparollus sp. Bivalve Astartella vera Cephalopod Brachycycloceras sp, Brachiopod Cleiothyridina orbicularis
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Karinopteris cf. soubeiranii (Zeiller) Boersma 1972
paleoflor posted a gallery image in Member Collections
From the album: Steinbruch Piesberg (Osnabrück, Germany)
© T.K.T. Wolterbeek
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From the album: Missouri Conulariids
Another broken specimen weathered from the rock. I always find these jellyfish fascinating whenever they present themselves. -
From the album: Missouri Conulariids
A lot of my conulariid finds tend to be broken at or near the tip of the apex, even before the attachment which is typical of other conulariid specimens. I am not sure if it is a plane of weakness, a common feature when the animal dies, or simple predation, but when I collected this specimen from the Paola limestone the lower half was missing from the rest of the slab, despite being an almost clean fracture.
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