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Showing results for tags 'ordovcian'.
Found 13 results
mbarco posted a topic in Fossil IDIt's an Ordovician decalcified mould of a....? Scale bar 5mm. One person told me that it might be arthropodian (for example the backside of an unidentified librigena), but all the others don't have any idea about it. I found on the "Treatise on invertebrate paleontology" (Part F - 1963) at p. F65 a resemblance with Conularia gracilis (first of all because it seems to lack transversal rows), also supported from a few very old pics from Google images. But I didn't find any modern confirmation of the "Conularia gracilis" existence. It could be a Conulariid (only 1 has ever been
Horn Coral cleaning?
artur posted a topic in Fossil PreparationTitle says it all, this is my only rugosa fossil and its half in a martrix, how would I go about removing my peice from it? What tools would I need, and is it possible? Thanks in advance!
Fossil clam from Oakville, Canada
jeffln posted a topic in Fossil IDI found this clam buried in mud along Joshua’s Creek in Oakville, near Lake Ontario, the hotspot of Ordovician fossils. Measurements are 7cm by 6cm. I’m particularly intrigued by the growth rings, since they protrude out rather visibly and considering I’ve never seen this in any other kind of fossil or living clam species. Can anyone help with identifying what species of fossil clam this is?
Moulds of an...?
mbarco posted a topic in Fossil IDOrdovician specimen Upper-left: external mould Upper -right: internal mould Bottom: internal+ external mould Scale bar: 5mm
A extremely rare trilobite from Pennsyvania
Dean Ruocco posted a topic in Member CollectionsHey everyone, Thought I’d share a recent acquisition of mine with you all! This is an extremely rare odontopleurid called Diacanthaspis sp. from the closed Ordovician locality at Swatara gap. These trilobites were not often found at the trilobite beds at Swatara Gap but rather in the echinoderm beds. One publications states that in 100 hours of digging one could expect one articulated specimen. It is probably the 7th 8th most rare trilobite species at Swatara behind Proteus and Platylichas.
A Few Little Finds From My Trip To Georgian Bay Ontario (Not Inside Provincial Parks)
GarethGP posted a topic in Fossil Hunting TripsI went up to Georgian Bay Ontario today to a beach with chunks of Ordovician shale in the hopes of finding a conulariid. Unfortunately it's late in the season and the shale you usually find in early spring is mostly gone by this point. So there were a few small finds here and there, but not much to write home about. I don't know if anyone can see anything in these rocks I missed. Not great pics, I know. Pseudogygites latimarginatus pygidium Some crinoids And finally some Treptoceras nautiloids I think?
Crinoid Stem or Cephalopod
Muffinsaurus posted a topic in Fossil IDI picked this up on my last trip along AA highway in Kentucky. It's about 4cm long. I thought it was a crinoid stem. Recently I saw a YouTube video where someone found a fossil very similar to this and called it a cephalopod. So that left me confused. So I figured I should just post and ask here. (If I need to provide more information or pictures please let me know)
Dean Ruocco posted a gallery image in Members Gallery
Discovery of the Oldest Venus Flower Basket Sponges
piranha posted a topic in Fossil NewsCongrats to @Spongy Joe Joe Botting and associates on this exceptional new discovery! "New fossil sponges from the latest Ordovician (444 Ma) Anji Biota are interpreted as crown-group euplectellids, within the Venus' flower basket morphological group. Two species are described here (one in open nomenclature), with a range of characters limited specifically to the modern group. These new occurrences extend the known record of the family by more than 300 myr from the previous earliest record, in the Cretaceous. The date of the Anji Biota is substantially older even than molec
Help! Ordovician gastropod - genus and species?
Gyllingberg posted a topic in Fossil IDHi folks! I’m kind of stuck on this one. I presume this is a gastropod and not a cephalopod because of its small size (diameter around 2 cm). But what order, family, genus and species? Its found at Mt Billingen in Sweden, in a layer from middle Ordovician (middle to upper Darriwilian).
Kentucky’s Maysville Cut Trip
ShanLambert posted a topic in Fossil Hunting TripsVisiting family in Kentucky and went to the Maysville Cut for 2 hours yesterday. Found some neat things. I wanted to find a trilobite, but no real luck. I think I may have found a piece of one.
Fezouata formation fossils
M.Youssef posted a topic in Fossil IDGood day everyone Can you please help identify these fossils? They are from the Ordovician of fezouata formation, Morocco. Thanks Malek
gigantoraptor posted a topic in Fossil IDHello all I was relooking at a piece I obtained many years ago. It has a beautifel cephalon of Trinucleus fimbriatus, which was the reason I bought it. I noticed this weird, rond fossil in the same piece. I was not a member here then and I didn't found it online. I forgot about the object until today. Now I want to know what it is. Does anyone here has an idea? I thought It might be one of the early development stages of a trilobite. It looked like a protaspis but is way to big (online they say protaspis are less than 1 mm, while this piece is 4mm) It's from the middle