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Showing results for tags 'Invertebrate'.
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From the album: Lutetian Mollusks
© @ Alexandre Tuel
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From the album: Lutetian Mollusks
© @ Alexandre Tuel
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From the album: Lutetian Mollusks
© @ Alexandre Tuel
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From the album: Lutetian Mollusks
© @ Alexandre Tuel
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February 2022 Invertebrate / Plant Fossil Of The Month Poll
digit posted a topic in Fossil of the Month
Check the entries below carefully and cast your vote! PM me if you notice any errors with the entries. The poll ends March 9th. Be sure to vote in our other FOTM poll, HERE 1. Androgynoceras maculatum ammonites - Jurassic, Lower Lias, Sinemurian - Robin Hoods Bay North Yorkshire, UK 2. Lingula sp. brachiopod and Mazopherusa prinosi annelid worm - Pennsylvanian, Francis Creek Shale - Braceville, Illinois 3. Architarbus rotundatus spider - Pennsylvanian, Francis Creek Shale - Mazon Creek, Grundy County, Illinois 4. Aulacopleura pogsoni trilobite - early Silurian, late Llandovery, Cotton Formation - Cottons Hill Quarry, Forbes, NSW, Australia 5. Vaccinites sp. hippuritid rudist - Upper Santonian/Lower Campanian, Upper Geistthal Fm - Römaskogel, Kainach near Voitsberg, Styria, Austria
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Winner of the January 2022 Invertebrate/Plant Fossil Of The Month
digit posted a topic in Fossil of the Month
The winner of the January 2022 IPFOTM goes to... Echinolampas hemisphaerica echinoid - Miocene, Serravallian - Aquitaine, France Congratulations to @fifbrindacier !!- 40 replies
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January 2022 Invertebrate / Plant Fossil Of The Month Poll
digit posted a topic in Fossil of the Month
Check the entries below carefully and cast your vote! PM me if you notice any errors with the entries. The poll ends February 9th. Be sure to vote in our other FOTM poll, HERE 1. Syncarid shrimp (maybe Acanthotelson stimpsoni or Paleocaris typus) - Pennsylvanian, Francis Creek Shale - Mazon River, Morris, Illinois 2. Annularia inflata (Calamites foliage whorl) - Pennsylvanian, Francis Creek Shale - Grundy County, Illinois 3. Echinolampas hemisphaerica echinoid - Miocene, Serravallian - Aquitaine, France 4. Lophoranina lincki frog crab carapace - Early Oligocene, Glendon Limestone - Mississippi 5. Hippuritid rudist (Vaccinites sp.) - Cretaceous, Upper Santonian-Lower Campanian - Styria, Austria 6. Eurypterus sp. (Sea Scorpion/Eurypterid) - Late Silurian - Pennsylvania
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Winner of the 2021 Invertebrate/Plant Fossil Of The Year
digit posted a topic in Fossil of the Month
2021 INVERTEBRATE/PLANT FOSSIL OF THE YEAR (IPFOTY) The winner of the 2021 IPFOTY goes to... Urasterella montana starfish - Upper Carboniferous (Pennsylvanian) Kasimovian stage Kreviakian substage - Kasimov town, Ryazan region, Russia Congratulations to @Kanopus !!!- 26 replies
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Winner of the December 2021 Invertebrate/Plant Fossil Of The Month
digit posted a topic in Fossil of the Month
The winner of the December 2021 IPFOTM goes to... Dipleura dekayi trilobite - Devonian, Moscow Fm - New York Congratulations to @KompsFossilsNMinerals !!!- 29 replies
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Hardly anybody ever talks about the Cambrian fossils of the southern midcontinent (USA). They're super-underappreciated. Show us what you've got! Here's one to start us off: Thorax and pygidium of a trilobite, possibly Orygmaspis, typically referred to as "Orygmaspis cf. Orygmaspis llanoensis" but probably a different species altogether. Note the two pairs of macropleural spines marking the final thoracic segments. Davis Formation (late Cambrian: Furongian), south side of Highway 8, St. François County, Missouri.
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December 2021 Invertebrate / Plant Fossil Of The Month Poll
digit posted a topic in Fossil of the Month
Check the entries below carefully and cast your vote! PM me if you notice any errors with the entries. The poll ends January 9th. Be sure to vote in our other FOTM poll, HERE 1. Asteropygine trilobite (Greenops sp.) - Devonian, Mahantango Fm (387 Ma) - Pennsylvania 2. Dipleura dekayi trilobite - Devonian, Moscow Fm - New York 3. Pagurus banderensis hermit crab claw - Cretaceous, Glen Rose Fm - Texas 4. Fenestella sp. bryozoan - Pennsylvanian - Missouri
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Winner of the November 2021 Invertebrate/Plant Fossil Of The Month
digit posted a topic in Fossil of the Month
The winner of the November 2021 IPFOTM goes to... Urasterella montana starfish - Upper Carboniferous (Pennsylvanian) Kasimovian stage Kreviakian substage - Kasimov town, Ryazan region, Russia Congratulations to @Kanopus !!!- 23 replies
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Photographed this is a river bed near Methven, New Zealand. Approx 28 cm in length. My first impression is overlapping horseshoe crabs.
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Hello everyone! I'm so happy to find such a thriving community here, and I'm especially excited to explore and possibly contribute to the reference museum. Earlier this year I moved really close to Lake Michigan, and now find myself a newly avid beach rockhound and fossil collector. I still don't know a lot but I love learning. So far I do know that a great deal of what I find are stromatoporoids (hence the username), along with some favocites, syringopora, halycites, tetracoral, crinoids, and brachiopods. The area where I live is silurian rock I think, and the composition of most of the fossils I collect is chalcedony rather than limestone. So, "agatized." They're often very colorful, have sharply preserved details contrasting parts that are translucent and opaque, or contain pockets of crystal formations. I don't find a lot of images of similar things online, so like I said, I'm excited to share. Looking forward to future discussions and also learning from people around the world Just for fun, here's a photo of the beach l visit most often for collecting:
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November 2021 Invertebrate / Plant Fossil Of The Month Poll
digit posted a topic in Fossil of the Month
Check the entries below carefully and cast your vote! PM me if you notice any errors with the entries. The poll ends December 9th. Be sure to vote in our other FOTM poll, HERE 1. Urasterella montana starfish - Upper Carboniferous (Pennsylvanian) Kasimovian stage Kreviakian substage - Kasimov town, Ryazan region, Russia 2. Coilopoceras inflatum ammonite - Upper Cretaceous (Turonian), Mancos Shale, Juana Lopez member - Sandoval County, New Mexico 3. Delocrinus vulgatus crinoid cup - Upper Pennsylvanian, Harpersville Formation - Texas.jpg.9079b8e2ab8609ad1945c63d6b306b0e.jpg)
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Winner of the October 2021 Invertebrate/Plant Fossil Of The Month
digit posted a topic in Fossil of the Month
The winner of the October 2021 IPFOTM goes to... Spider, indet. Chelicerate - Miocene, Messinian Stage - near Murat, Cantal Dept., France Congratulations to @marguy !!!- 23 replies
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October 2021 Invertebrate / Plant Fossil Of The Month Poll
digit posted a topic in Fossil of the Month
Check the entries below carefully and cast your vote! PM me if you notice any errors with the entries. The poll ends November 9th. Be sure to vote in our other FOTM poll, HERE 1. Uddenites sp. goniatite - Pennsylvanian, Finis Shale - Texas 2. Spider, indet. Chelicerate - Miocene, Messinian Stage - near Murat, Cantal Dept., France 3. Greenops sp. trilobite - Middle Devonian, Windom Shale - New York 4. Echinocaris punctata phyllocarid - Middle Devonian, Windom Shale - New York 5. Crinoid cup (undescribed species) - Lower Permian, Moran Formation - Coleman County, Texas 6. Arthroacantha sp. crinoid calyx - Middle Devonian, Oatkacreek Formation, Mottville Member - Morrisville, New York 7. Millecrinus horridus crinoid holdfast and arm - Jurassic, Middle Oxfordian - Liesberg, Baselland, Switzerland.JPG.874e240800a8bfcc2924b1d6ab1e4d0e.JPG)
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Winner of the September 2021 Invertebrate/Plant Fossil Of The Month
digit posted a topic in Fossil of the Month
The winner of the September 2021 IPFOTM goes to... Carneyella pilea edrioasteroid - Late Ordovician, Bellevue Formation (452.0 - 449.5 Ma) - Mason County, Kentucky Congratulations to @fossilcrazee !!!- 20 replies
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The last weekend of September, I decided to visit some of my central Texas sites. I had been looking for a tetragamma for some time - the first one I found was collected illegally, totally by mistake, on federal property. And it was far from a perfect specimen. Well, after a few years of being teased by broken tetragamma bits, I found this beauty. I believe this is a tetragamma streeuwitizi - collected from comanche peak limestone. Please forgive the situ pic, motion picture was activated, and the sun was too bright to tell that it was a poor quality image until later. Initially thought was a phymosoma sp., until I got home and realized it was a tetra - totally stoked!!! Pic #3 also shows that my tetra retained one of her (yes, I just humanized my urchin) spines!!! This is a first for me. Thanks to @Uncle Siphuncle for cluing me into the rarity of tetragamma a few years back.
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September 2021 Invertebrate / Plant Fossil Of The Month Poll
digit posted a topic in Fossil of the Month
Check the entries below carefully and cast your vote! PM me if you notice any errors with the entries. The poll ends October 9th. Be sure to vote in our other FOTM poll, HERE 1. Carneyella pilea edrioasteroid - Late Ordovician, Bellevue Formation (452.0 - 449.5 Ma) - Mason County, Kentucky 2. Mesostylus faujasi shrimp claw - Nekum Chalk, Maastricht Formation, Cretaceous (68 Ma) - Romontbos Quarry, Eben-Emael, Belgium 3. Pulalius vulgaris crab - Lincoln Creek Formation, Paleogene - Southwest Washington State
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August 2021 Invertebrate / Plant Fossil Of The Month Poll
digit posted a topic in Fossil of the Month
Check the entries below carefully and cast your vote! PM me if you notice any errors with the entries. The poll ends September 9th. Be sure to vote in our other FOTM poll, HERE 1. Annularia radiata leaf whorls - Francis Creek Shale (Pennsylvanian) - Grundy Co., Illinois 2. Millipede - Francis Creek Shale (Pennsylvanian) - Grundy Co., Illinois 3. Ophiura sp. brittlestar arm segment - Cretaceous, Del Rio Formation - Travis County, Central Texas 4. Shimanskya postremus cephalopod - Pennsylvanian, Graham formation, Finis Shale member - Jacksboro, Texas 5. Tubular stromatolites, encrustation on reed stems - Oligocene, Chattian - Saint-Saturnin, near Clermont-Ferrand, France 6. Orbiculoidea (possibly O. rugata) inarticulate brachiopod - Silurian, Přídolí ,Leighton Formation - Pembroke, Maine 7. Acantotelson stimpsoni shrimp - Pennsylvanian, Francis Creek Shale - Grundy Co., Illinois
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Again, here is another invertebrate I have not been able to identify. Either way, my original guess was a trilobite pygidium, until I reviewed the fossil under different lighting, and then saw that it matched no known trilobites from this formation. So I am at a loss here. It is Pridoli, Silurian. For anyone who is interested, this came from a recent excursion to the Leighton Formation. It was found in a layer that contained only Chonetes bastini brachiopods and a few ostracods - with some possible fish bits. In the pictures below, the fossil is shown under a combination of different lightings, to show the surface texture of the specimen. The first three pictures show the cast/original of the specimen, the last two show the external mold of it. The first picture is to show what the entire thing looks like. I am pretty certain that the round piece at the top right of the picture is part of the same specimen, but I cannot be sure. Thanks in advance for your help everyone!
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Looking for help with this Early Ordovician (Floian) trilobite from the Powell Dolostone of Arkansas, USA. The specimens (GRAY FIGURE below) were identified by Taylor (1968) as cf. Lannacus nericiensis Wiman, but that species (now a species of Megalaspides) doesn't seem like a great match, as the author notes in the paper. In fact, I'm not sure that proper Megalaspides even lived in North America. Last week, an Arkansan found another asaphide specimen (MAIZE AND BLUE FIGURE below) in these same rocks, which may or may not be the same species as the specimens described by Taylor. My question: Could these all be specimens of Isoteloides canalis? That species is already known from the Powell Dolostone in Missouri per Weller & St. Clair (1928) (as Isoteloides whitfieldi, now a subjective synonym of Isoteloides canalis). Or are these instead specimens of a distinct Powell asaphide, and if so, what genus & species? Thanks in advance. 1959 Treatise blurbs for Isoteloides and Megalaspides are in the BLACK AND WHITE FIGURE below. Here's Taylor (1968): https://scholarworks.uark.edu/cgi/viewcontent.cgi?article=3056&context=jaas Here's Weller & St. Clair (1928): https://share.mo.gov/nr/mgs/MGSData/Books/Volumes/Geology of Ste. Genevieve County/V-022.pdf GRAY FIGURE: MAIZE AND BLUE FIGURE: BLACK AND WHITE FIGURE:
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Winner of the July 2021 Invertebrate/Plant Fossil Of The Month
digit posted a topic in Fossil of the Month
The winner of the July 2021 IPFOTM goes to... Architarbus rotundatus spider - Pennsylvanian, Francis Creek Shale - Mazon Creek, Morris, Illinois Congratulations to @flipper559 !!!- 16 replies
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Check the entries below carefully and cast your vote! PM me if you notice any errors with the entries. The poll ends August 9th. Be sure to vote in our other FOTM poll, HERE 1. Mucrospirifer thedfordensis brachiopod - Mid Devonian, Hungary Hollow Formation and Arkona Shale (350 Ma) - Rock Glen, Arkona, Ontario 2. Epihoplites compressus ammonite - Lower Cretaceous, Gault Clay. Albian Age - Cap Blanc Nez, France 3. Petrified wood, Family Lauraceae (laurel tree) - Late Cretaceous, Maastrichtian age, Dawson Formation (70-66 Ma) - Arapahoe County, Colorado 4. Chlinocephalus demissifrons crab - Zanclean (lower Pliocene) - Southwest France 5. Rielaspis elegantula trilobite assemblage - Mid Silurian, Thornloe Fm - Northern Ontario 6. Solanocrinites sp. free floating Crinoid (cormatulid) - Cretaceous, - Glen Rose Formation - Texas 7. Architarbus rotundatus spider - Pennsylvanian, Francis Creek Shale - Mazon Creek, Morris, Illinois 8. Hippuritid rudist Vaccinites sp. (possibly V. sulcatus) - Upper Santonian-Lower Campanian/Upper Geistthal-formation, Gosau-Group - Styria, Austria 9. Dawn Redwood Cone (Metasequioa sp.) - Late Cretaceous, Maastrichtian, Hell Creek Fm (~66 Ma) - Baker, Montana 10. Belemnite (cf. Pachyteuthis sp.) - Mid/Late Jurassic, Oxfordian, Sundance Fm (~168-157 Ma) - Greybull, Wyoming
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