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Showing results for tags 'gastropoda'.
Found 37 results
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This one has me stumped. I think it is the body whorl of a gastropod (DSR, Middle Devonian, Hamilton Group, Moscow Fm., Windom Shale). It is smashed, but the full circumference of the whorl is present, which means the aperture has to be on the left (which is consistent with the direction of the growth lines) (see arrow). If that is the case, there should be a shallow furrow or ridge in the center of the whorl running parallel with the cords and perpendicular to the growth lines if it were something like Mourlonia or even a Bellarophontacea. I see no evidence of such, not even on the crimped / folded / smashed edges above and below. One would think that with such distinct surface detail that this one would be easy... Any thoughts? The fossil is about 46 mm in length. Scale in mm. @Jeffrey P, @Fossildude19, @Darktooth, @Kane Here is outer side of the shell. Here is the shell flipped over to show the other side of the whorl. I think the broken area on the right is where the body whorl continued to the second whorl (which is missing). Here is both views side by side: Here is where I believe the aperture is located (I have prepped to the edge of the shell, and the shell ends there).
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- mollusca
- moscow fm.
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This is a belated report from the Briggs TFF gathering last spring. Here are some photos of TFF'ers working the site: Here are my finds (not in phylogenetic order). Scale in mm throughout. I guess I'll start with one of my bucket listers, a large goniatite: Next, the trilobotes: And "those other arthropods": Now the gastropods: Other Mollusca: Crinoidea: Seedless vascular plant bits: I don't usually collect "hash plates" but such accumulations don't seem very common at these sites, so I picked up this nice one.
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- hamilton group
- gastropoda
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Hey everyone! I have a couple recent finds that I would appreciate your input on. I’m currently unsure of the formation that these fossils come from. I found this outcrop underneath a parking lot. It’s orange conglomeratic sandstones which makes me think Hookton Formation which would place it somewhere around 450,000 ybp. Scale is in inches.
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Help request! I am putting together a tool for judging rock age based on very crude, whole-rock, hand-sample observations of fossil faunas/floras -- the types of observations a child or beginner could successfully make. I view this as a complement to the very fine, species-level identifications commonly employed as index fossils for individual stages, biozones, etc. Attached is what I've got so far, but I can clearly use help with corals, mollusks, plants, vertebrates, ichnofossils, and the post-Paleozoic In the attached file, vibrant orange indicates times in earth history to commonly observe the item of interest; paler orange indicates times in earth history to less commonly observe the item of interest. White indicates very little to no practical probability of observing the item of interest. Please keep in mind that the listed indicators are things like “conspicuous horn corals,” purposefully declining to address rare encounters with groups of low preservation potential, low recognizability, etc. Got additions/amendments, especially for the groups mentioned above? Toss them in the comments below! Thank you..... https://docs.google.com/spreadsheets/d/1tVm_u6v573V4NACrdebb_1OsBEAz60dS1m4pCTckgyA- 5 replies
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- pelecypoda
- gastropoda
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Hello! Is it some some species of Gastropoda? Scale in mm. Western Ukraine. Neogene, Miocene
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Is it some species of Gastropoda? Ukraine, Lviv region. Thanks!
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Sorry for bad quallity of photos, but may be it would be possible to ID genera of this mollusc..? Western Ukraine, Lviv region.
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Hello! Help please with identification or with age of this molusc if its possible. Western Ukraine, Lviv region. Thanks!
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Hello! I found them in Western Ukraine. Help, please, with identification. Are they Gastropoda moluscs? Which type of replacement it is? And from which period it could be (I found fossils in this place from Neogene and Cretaceus)? Thanks in advance!!!
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- vermetidae rafinesque 1815
- pliocene
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Someone brought in this nice steinkern of a large gastropod found last week in the Middle Devonian Columbus Limestone near Columbus, Ohio. It is likely Pleuronotus decewi. Because I don't yet have this taxon (nor any palaeozoic gastropod taxa of that size), I took the opportunity to mold and cast it. Here is the fossil: Here is the fossil (lower) and two casts I made (above). These have a base-color that was added to the casting medium, but no color matching paint treatment has yet been applied (these are hot off the "press").
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- gastropoda
- columbus limestone
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A gastropod from the Lower Campanian of southern Poland. Any ideas on what group may it belong to, based on the ornamentation?
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p295-308GARVIE.pdf Microgastropod population changes from the early Cretaceous to the Recent in the Gulf Coastal Plain of the USA CHRISTOPHER L. GARVIE Zoosymposia(1),2008
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LINKdocker David T. Dockery III THE STREPTONEURAN GASTROPODS,EXCLUSIVE OF THE STENOGLOSSA, OF THE COFFEE SAND (CAMPANIAN) OF NORTHEASTERN MISSISSIPPI BULLETIN 129 MISSISSIPPI DEPARTMENT OF ENVIRONMENTAL QUALITY OFFICE OF GEOLOGY size:approx. 27 MB NB: dedicated to Norman F.Sohl(and containing biographical details)
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So i got this calcareous limestone and it include type of gastropod and bivalve fossils and other types which i couldn't identify. Specimen from a reefal complex. What you guys think about flower like texture ?
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John S. Peel Department of Earth Sciences (Palaeobiology), Uppsala University, Uppsala, Sweden GFF ,2018, Vol. 140, No. 3, 249–253 A new look at Pleurotomaria perlata Hall, 1852 (Gastropoda) from the Silurian of Laurentia peelgastropmollusilurpaleozoic at Pleurotomaria perlata Hall 1852 Gastropodan of Laurentia.pdf about 1,1 MB HIGHLY RECOMMENDED brief discusions on /comparisons with : Liospira,Pycnotrochus
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- usa
- pleurotomaira
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pterpchecanaturearagobiominice!!51328584c5.pdf (the ecology of pteropods has certainly had an effect on their morphology,BTW) pteropods are important in paleoceanographic and ocean acidification/global change studies. Together with e.g. foram indices the amount of carbonate dissolution in samples can be calculated from their preservational style(taphonomy) recommended citation: Biological strategy for the fabrication of highly ordered aragonite helices: the microstructure of the cavolinioidean gastropods Antonio G. Checa1,2, Elena Macías-Sánchez1,2 & Joaquín Ramírez-Rico3,4 NATURE/Scientific Reports | 6:25989 | DOI: 10.1038/srep25989 below(NOT from this article): all the black & white photographs hopefully show the aberrant morphology of euthecasomatous pteropods. and I'm aware of the fact that the Paleozoic tentaculitids are regard by some as possible pteropods colour:(bubble) rafting as a flotation device fossil pteropods(about 10 Mb,Cenozoic of France) Cahuzac & Jannsen,Scripta Geologica 141
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Dear TFF members, Any of those ones for small European Neogene Bivalvia or Gastropoda. Kind regards, Ricardo Pentacrinus penichensis LORIOL, 1891, Cabo Carvoeiro Formation, Cabo Carvoeiro 5 Member, Upper Toarcian. 8-10 mm. ps. type location specimens. Pentacrinus basaltiformis MILLER, 1821, Água de Madeiros Formation, Upper Sinemurian, Portugal. 2- 20 mm. RESERVED Thanks. Pentacrinus sp., Cabo Carvoeiro Formation, Cabo Carvoeiro 5 Member, Upper Toarcian, Portugal. 8-15 mm.
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Dear The Fossil Forum members, I have those Cnidaria (and a few other unidentified Cnidaria genera) from Camadas de Alcobaça Formation, Kimmeridgian, Portugal. I would be interested in Neogene Bivalvia or Gastropoda. If interested drop me a line please. Kind regards, Ricardo
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Likolleweavermollusciridesphotonicscolourbiomineralizpigment2015.NatComm..pdf
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- functional morphology
- mollusca
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UPDATE: This could be Murchisonia sp. which has been recorded from the underlying Dundee Limestone and deposited in the Ohio State University Museum of Biological Diversity. Hello, I found a rare conispiral gastropod steinkern in the middle Devonian (Givetian) Silica Shale of Paulding, Ohio, last week. It's the first strongly conispiral gastropod I've ever found in the Middle Devonian (let-alone the Silica Shale). I looked through the FUMMP online database as well as the "Strata and Megafossils of the Middle Devonian Silica Formation" published by FUMMP and couldn't find any taxa that looked like this. It has the general shape of Paleozygopleura known from the Hamilton Group of New York. Is anyone aware of a snail with this general morphology that has been reported from the Silica Shale? Scale in mm.
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the diehard cladist will like this anyway,but there's slightly more to this article than just that bacomurici279193.pdf less than 1 Mb
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- biogeography
- gastropoda
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First trip of the year today to the "Fossil Gardens" at Paulding, Ohio. This is quarry spoil of mid-Devonian age, Silica Formation. There was not a cloud in the sky, and temps were relatively warm at 43 deg. F. I was the only one there for most of the day, and it was extremely peaceful. What a great day. Here are pics of some of the finds. These are "farm fresh" and haven't even been washed yet, but I did take time to polish some horn corals and get some acetate peels (couldn't wait). A large Cystiphylloides rugose coral.
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- gastropoda
- silica fm
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Hi. Found this small guy on the beach in Galway , Ireland. Upper Visean it's all I can say because beach find. Diameter is 8.2 mm. 4 whorls plain surface. I doubt it's Glabrocingulum sp. It's more like recent Natica shells. Any ideas?
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hello what about this ? family? genus? Is this Athleta?
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