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I'll be darned if I can figure out what type of life form this is. At first I thought brachiopod, but no. Middle Devonian, Hamilton Group, New York.

The winner of the July 2019 IPFOTM goes to... Unidentified (trigonotarbid?) arachnid - Late Carboniferous (Westphalian D), Osnabrück Fm. - Piesberg quarry near Osnabrück, Germany Congratulations to @paleoflor!!!

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. Hippurites colliciatus rudist - Campanian, St. Bartholomä Formation, Gosau Group - St. Bartholomä, Styria, Austria 2. Vaccinites alpinus rudist - Campanian, St. Bartholomä Formation, Gosau Group - St. Bartholomä, Styria, Austria 3. Mesopuzosia pacifica titanic ammonite - Late Cretaceous (Coniacian) Yezu Group - Mikasa, Hokkaido Prefecture, Japan 4. Mediospirifer auduculus brachiopod with unknown crinoid holdfast - Devonian, Moscow Formation - Penn Dixie Fossil Park, New York 5. Bellaclathrus spinosus brachiopods - Permian, Fort Apache Member, Schnebly Hill Formation - northeastern Gila County, Arizona 6. Platystrophia sp. brachiopod with quartz crystals - Ordovician - Maysville, Kentucky 7. Atactotoechus fruticosus bryozoan - Middle Devonian, Moscow, Kashong Member - Livingston County, New York 8. Treptoceras crebriseptum orthoconic nautiloid - Upper Ordovician (~440-445 mya), Georgian Bay Formation - Toronto, Ontario, Canada 9. Promicroceras, Asteroceras, Xipheroceras and Cymbites ammonite death assemblage - Lower Jurassic, Sinemurian - Charmouth, Dorset, England 10. Flexicalymene granulosa trilobite - Upper Ordovician, Georgian Bay Formation - Mimico Creek, Etobicoke, Ontario, Canada 11. Unidentified (trigonotarbid?) arachnid - Late Carboniferous (Westphalian D), Osnabrück Fm. - Piesberg quarry near Osnabrück, Germany 12. Near-complete frond of Mariopteris nervosa - Late Carboniferous (Westphalian D), Osnabrück Fm. - Piesberg quarry near Osnabrück, Germany 13. Corocrinus calypso four associated crinoid cr owns - Middle Devonian, Erian, Arkona Formation - Arkona, Ontario, Canada

Hi! I'm mostly here just because I'm interested in fossils haha, but I was wondering what this fossil might be? It's approx. 3-4 cm (pretty small!), and I also found it on the beach in Puerto Plata (Dominican Republic). This is more for curiosities sake, and just because I find them cool.

What the heck? At first I thought this was maybe a cephalopod cross-section, but now I only have guesses. It's about 20mm in diameter. Found in a Skaneatles FM (Middle Devonain) outcrop in Madison County, NY

The winner of the June 2019 IPFOTM goes to... Eurypterus remipes eurypterid - Late Silurian, Phelps Member, Bertie Group - Herkimer County, New York Congratulations to @Al Tahan!!!

Made a trip to Fort Gibson dam 4 days ago and saw these invertebrate fossils that looked to me like "spikey worms". The ones in the photos are in rock and measure about 2 to 3 cm or more. The road cuts are of Mississippian age on either side of the dam. Also found a blastoid here. What are the spikey worm fossils?

Check the entries below carefully and cast your vote! PM me if you notice any errors with the entries. The poll ends July 9th. Be sure to vote in our other FOTM poll, HERE 1. Pinus sp. and Pinus brevis cones - Miocene - Chłapowo, Poland 2. Flexicalymene croneisi trilobite - Ordovician, Lindsay Fm, Hillier Member - Bowmanville, Ontario, Canada 3. Donaciinae subfamily (aquatic leaf beetle) elytron imprint - Miocene - Juodikiai Quarry, Klaipeda district, Western Lithuania 4. Apiaceae indet. (carrot family) seed - Miocene - Juodikiai Quarry, Klaipeda district, western Lithuania. 5. Menuites ammonite in bryozoan colony - Late Cretaceous, Wenonah Formation - Monmouth County, New Jersey 6. Eurypterus remipes eurypterid - Late Silurian, Phelps Member, Bertie Group - Herkimer County, New York 7. Harpoceras and Dactylioceras gracile ammonites - Lower Jurassic, Upper Lias - Sandsend, near Whitby in Yorkshire, England 8. Periarchus pileussinensis sand dollars with Chlamys scallop fragment - Eocene, Tivola Limestone (~35 mya) - Perry, Georgia 9. Chlamys spillmani clinchfieldensis scallop - Eocene, Tivola Limestone (~35 mya) - Perry, Georgia 10. Crickites sp. goniatite - Late Devonian, Frasnian - Chimay, Belgium 11. Eldredgeops rana trilobite with Stereolasma rectum horn coral - Devonian - Hamburg, New York 12. Olenoides nevadensis with associated Elrathia kingii trilobites - Cambrian, Wheeler Shale - U-dig quarry near Delta, Utah

The winner of the May 2019 IPFOTM goes to... Triarthrus eatoni trilobite (ventral view with eggs) - Ordovician - Beecher's Beds, Walcott Quarry, near Rome, New York Congratulations to @Scylla!!!

I don't know whether I should have put this in the ID section instead, as I'm looking for some info and for help in sorting out what I've got, but not necessarily IDs per se. But it's also a sort of show-and-tell, so here goes. The info I'm trying to sort out has to do with the locations and formation/stages of some of the items. To help, I'll post the Ordovician correlation chart from the ICS and this other one from a paper on the Valongo (Portugal) site recently posted in the Documents section, showing the known soft-bodied sites of the Ordovician... The latter seems a little too tidy, with the deposits fitting exactly within the given stages, but maybe it will be of some help:

Check the entries below carefully and cast your vote! PM me if you notice any errors with the entries. The poll ends June 9th. Be sure to vote in our other FOTM poll, HERE 1. Mecaster scutiger echinoid anoxic mortality cluster - Cretaceous, Cenomanian (Tentúgal Fm, I level) - Montemor-o-Velho, Coimbra, Portugal 2. Stromatoporid (with bonus nautiloid) - Likely Devonian (formation uncertain) - Champaign, Illinois 3. Pleurodictyum americanum (tabulate coral) attached to a crinoid calyx (Megistocrinus?) - Middle Devonian, Moscow Formation - Livingston County, New York 4. Echinocaris punctata phyllocarid - Middle Devonian (Givetian), Moscow formation, Hamilton group - Madison county, New York 5. Triarthrus eatoni trilobite (ventral view with eggs) - Ordovician - Beecher's Beds, Walcott Quarry, near Rome, New York 6. Psammichnites? ichnofossil, molluscan feeding trail - Carboniferous - Kilkee, Ireland 7. Coeloma vigil crab - Eocene - Provence, France 8. Cenocerus nautiloid - Early Jurassic - Mappleton, Yorkshire, UK

The winner of the April 2019 IPFOTM goes to... Nahecaris frankei (phyllocarid) - Emsian (Early Devonian) - Burg-Reuland, Belgium Congratulations to @Manticocerasman!!!

robiproufliersclerogeochemDSRDSRII2014.pdf The geochemistry of deep-sea coral skeletons: A review of vital effects and applications for palaeoceanography Laura F. Robinson, Jess F. Adkins , Norbert Frank , Alexander C. Gagnon ,Nancy G. Prouty , E. Brendan Roark , Tina van de Flierdt Deep Sea Research 99,2013

Here are a couple of inverts that I found at a dry land site last year, put them in a cigar box and then forgot about them. I ran across them again while digging through my boxes. I managed to ID a couple of them (not shown), but a few eluded my ID attempts - I am not very good with inverts (many are similar). Does anyone know what these are? Any help would be greatly appreciated. The big one is 5 inches across and appears to be a cast. Another is some kind of scallop (I think) and the last photo is barnacles of some kind. These were all found in a spot that was rich in Miocene inverts.

Disentangling the history of complex multi-phased shell beds based on the analysis of 3D point cloud data Mathias Harzhauser, Ana Djuricic,Oleg Mandic,Martin Zuschin,Peter Dorninger,Clemens Nothegger,Balázs Székelyb,Eetu Puttonen,Gábor Molnárb,Norbert Pfeifer Palaeogeography, Palaeoclimatology, Palaeoecology Volume 437, 1 November 2015, Pages 165-180 1-s2.0-S0031018215004149-main.pdf taxa concerned: Paroxystele amedei (Brongniart, 1823) r Superfamily: Neritoidea Rafinesque, 1815 Agapilia pachii c Nerita plutonis (Basterot, 1825) f Superfamily: Cerithoidea Férussac, 1821–1822 Ptychopotamides papaveraceus (Basterot, 1825) f Granulolabium bicinctum (Brocchi, 1814) r Turritella gradata (Hörnes, 1856) r Oligodia bicarinata (Eichwald, 1830) r Petaloconchus intortus (Lamarck, 1822) c Superfamily: Calyptraeoidea Lamarck, 1822 Calyptraea depressa (Lamarck, 1822) f Calyptraea irregularis (Cossmann & Peyrot, 1919) f Superfamily: Velutinoidea Gray, 1840 Erato sp. r Superfamily: Naticoidea Guilding, 1834 Polinices pseudoredemptus (Friedberg, 1923) f Neverita josephinia (Risso, 1826) r Superfamily: Muricoidea Rafinesque, 1815 Ocenebra crassilabiata (Hilber, 1879) c Ocinebrina striata (Eichwald, 1853) c Janssenia echinulata (Pusch, 1837) r Nassarius edlaueri (Beer-Bistricky, 1958) f Cyllenina suessi (Hoernes and Auinger, 1882) c Tudicla rusticula (Basterot, 1825) c Superfamily: Cancellariidae Forbes and Hanley, 1851 Solatia exwestiana (Sacco, 1894) r Superfamily: Conoidea Rafinesque, 1815 Perrona semimarginata (Lamarck, 1822) r Perrona louisae (Hoernes and Auinger, 1891) r Perrona vindobonensis (Hörnes, 1854) r Class: Cephalopoda Cuvier, 1795 Aturia aturi (Basterot, 1825) r Class: Bivalvia Linnaeus, 1758 Superfamily: Gastrochaenoidea Gray, 1840 Rocellaria dubia (Pennant, 1777) r ok,am quitting the italics for once Superfamily: Arcoidea Lamarck, 1809 Anadara diluvii (de Lamarck, 1805) r Superfamily: Limopsoidea Dall, 1895 Glycymeris deshayesi (Mayer, 1868) r Superfamily: Mytiloidea Rafinesqe, 1815 Perna aquitanica (Mayer, 1858) f Septifer oblitus (Michelotti, 1847) r Superfamily: Pteriidae Gray, 1847 Isognomon soldanii (Deshayes, 1836) r Superfamily: Pectinoidea Rafinesqe, 1815 Pecten styriacus (Hilber, 1879) r Aequipecten macrotis (Sowerby in Smith, 1847) r Superfamily: Anomioidea Rafinesque, 1815 Anomia ephippium Linnaeus, 1758 r Superfamily: Ostreoidea Rafinesque, 1815 Crassostrea gryphoides (Schlotheim, 1813) f Ostrea digitalina (Dubois de Montpereux, 1831) f Superfamily: Lucinoidea Fleming, 1828 Loripes dujardini (Deshayes, 1850) r Megaxinus incrassatus (Dubois de Montpereux, 1831) r Diplodonta rotundata (Montagu, 1803) r Superfamily: Chamoidea Lamarck, 1822 Pseudochama gryphina (Lamarck, 1819) r Superfamily: Cardioidea Lamarck, 1809 Cardium hians (Brocchi, 1814) Acanthocardia paucicostata (Sowerby, 1839) f Superfamily: Mactroidea Lamarck, 1809 Ervilia pusilla (Philippi, 1836) r Superfamily: Solenoidea Lamarck, 1809 Solen marginatus (Pulteney, 1799) c Superfamily: Tellinoidea de Blainville, 1814 Tellina planata (Linnaeus, 1758) r Superfamily: Veneroidea Rafinesque, 1815 Cordiopsis islandicoides (Lamarck, 1818) r Venerupis basteroti (Mayer, 1857) f related editorial note: GEOSPHERE is a free access publication;the link is quite long,and i noticed i got the message : session timed out so: a slightly more indirect way of pointing the way: https://pubs.geoscienceworld.org/gsa/geosphere/article/12/5/1457/189679/high-resolution-3d-surface-modeling-of-a-fossil High-resolution 3D surface modeling of a fossil oyster reef Ana Djuricic Peter Dorninger Clemens Nothegger Mathias Harzhauser Balázs Székely Sascha Rasztovits Oleg Mandic Gábor Molnár Norbert Pfeifer Geosphere (2016) 12 (5): 1457-1477. WARNING: 45 MB

Check the entries below carefully and cast your vote! PM me if you notice any errors with the entries. The poll ends April 9th. Be sure to vote in our other FOTM poll, HERE 1. Calamites sp horsetail tree trunk segment - Pennsylvanian - Southeast Oklahoma 2. Stigmaria ficoides lycopsid tree rooting structure - Pennsylvanian - Southeast Oklahoma 3. Cryptaulax sp. gastropod - Bathonian-Callowian, Middle Jurassic - Juodikiai quarry, Klaipeda district, Western Lithuania 4. Pleurotomaria sp. gastropod - Bathonian-Callowian, Middle Jurassic - Juodikiai quarry, Klaipeda district, Western Lithuania 5. Orthocerid cephalopod - Fairview Formation, Late Ordovician - Northern Kentucky 6. Triplophyllum cliffordanum rugose corals - Fort Payne Chert, Early Missisipian - Ooltewah, Tennessee 7. Colonial coral (Cycloria?) - St. Bartholomä-formation, Gosau-group, Campanian, Late Cretaceous - St. Bartholomä, Styria, Austria 8. Cyclus americanus cycloid arthropod - Francis Creek Shale, Upper Carboniferous - Chowder Flats, Grundy County, Illinois 9. Mantelliceras mantelli ammonite - Cenomanian, Late Cretaceous - Cap Blanc Nez, France 10. Eldredgeops rana trilobite - Middle Devonian (Givetian), Upper Ludlowville, Hamilton Group - Madison county, New York

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. Divarilima sp. file clam fossil - Early Cretaceous - Kursenai town, Siauliai district, Northern Lithuania 2. Kogulanychia sp. bivalve (Ambonychiidae) - Ludlow, Late Silurian - Nikanciai village, Siauliai district, Northern Lithuania 3. Lepidostrobus sp. lepidodendron cone (strobile) - Westphalien B, Upper Carboniferous - near Lens, Northern France 4. Poterioceras cf. nautiloid - Late Devonian, Matagne Shales - Chimay, Belgium 5. Brachiopod and Crinoid columnal hash plate - Early Silurian/Red Mountain Formation - Dalton, GA 6. Allocrioceras hazzardi heteromorph ammonite - Boquillas formation, Late Cretaceous - Brewster County, TX 7. Neithea irregularis bivalve mollusk - Comanche Peak formation, Cretaceous - Bosque County, TX 8. Graptocarcinus texanus crab carapace - Buda formation, Cretaceous - Bexar county, TX

Hi all, I just got back from Arizona where I spent a couple of days at the Tucson Gem Show. On my quest for coprolite treasure at the Moroccan village, I came across this little mystery piece. I'm assuming it is some type of coral or brachiopod. The dealer only had a handful of these and this one had the least damage. Can anyone identify it? Any guesses on the age? When I first saw it, it reminded me of the septarians in this thread. Obviously, they are not the same.

The winner of the January 2019 IPFOTM goes to... Manticoceras sp. (goniatite) - Frasnian Matagne Formation, Late Devonian (382-372 mya) - Chimay area, Belgium Congrats to @Manticocerasman!!!

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. Flexicalymene senaria association with gastropod steinkern Fusispira nobilis - Verulam Formation, Middle Ordovician (472-461 mya) - Brechin, Ontario, Canada 2. Lithophaga sp. (steinkern) in upper valve of radiolitid rudist - St. Bartholomä Formation (Campanian), Cretaceous (83-72 mya) - St. Bartholomä, Styria, Austria 3. Eucycloscala sp. gastropod - Middle Oxfordian, Late Jurassic (163-157 mya) - Juodikiai quarry, Klaipeda district, Northwestern Lithuania 4. Modiolopsis sp. bivalve mollusk - Ludlow Group, Late Silurian (427-423 mya) - Kursenai town, Siauliai district, Northern Lithuania 5. Eldredgeops rana trilobite with predation or scavenging marks - Silica Shale Formation, Middle Devonian (390 mya) - Paulding, OH, USA 6. Manticoceras sp. (goniatite) - Frasnian Matagne Formation, Late Devonian (382-372 mya) - Chimay area, Belgium 7. Mortoniceras sp. ammonite - Duck Creek Formation, Late Cretaceous (102-100 mya) - North TX, USA 8. Kainops invius trilobite - Bois D’Arc Formation, Lower Devonian (419-410 mya) - Clarita, Oklahoma (Theisons quarry) 9. Ogygiocarella sp. (debuchi?) trilobite - Llanvirn Series, Middle Ordovician (467-458 mya) - West Shropshire, UK 10. Nobiliasaphus nobilis trilobite - Dariwillian, Middle Ordovician (467-458 mya) - La Dominelais, France 11. Hash plate containing Fifeocrinus tielensis, Archaeocidaris sp., Orthoceras sp? Ureocrinus sp? Blackhall Limestone, Scottish Lower Limestone Formation, Visean, Lower Carboniferous (336-326 mya) - Seafield, Scotland

2018 INVERTEBRATE/PLANT FOSSIL OF THE YEAR (IPFOTY) Eurypterus remipes eurypterid - Fiddlers Green Formation, Phelps Member, Upper Silurian (~410 mya) - Ilion (Herkimer County), NY. Congrats to @Al Tahan!

The winner of the December 2018 IPFOTM goes to... Eurypterus remipes eurypterid - Fiddlers Green Formation, Phelps Member, Upper Silurian (~410 mya) - Ilion (Herkimer County), NY. Congrats to @Al Tahan!

Dear TFF Friends, I´m lost here. I really appreciate any help you can provide. From Callovian

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. Aphelaspis brachyphasis trilobite - Conasauga Formation, Late Cambrian (~500 mya) - Chatsworth, GA 2. Diptera indet. insect - Green River Formation, Parachute Creek Member, Eocene (~48 mya) - Douglas Pass, CO 3. Devonaster eucharis seastars - Mahantango Formation, Middle Devonian (392-385 mya) - Sparrowbush, NY 4. Serpulid operculum (species and genus indet.) - Meerssen Member, Maastricht Formation, Late Cretaceous (66 mya) - ENCI Quarry, Maastricht, Netherlands 5. Eurypterus remipes eurypterid - Fiddlers Green Formation, Phelps Member, Upper Silurian (~410 mya) - Ilion (Herkimer County), NY 6. Scaphitid ammonoid - Mancos Shale, Albian-Campanian, Late Cretaceous (~110-80 mya) - Chama, NM 7. Hippochrenes amplus gastropod - Barton Formation/Group, Eocene (~40 mya) - Hamphshire, UK