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Showing results for tags 'porifera'.
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Silicified sponge(?) fossil found in Wisconsin Paleozoic gravel. Likely Ordovician or Silurian, possibly Cambrian or Devonian. Thanks!
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Unfortunatly this is is a piece found at the outcrop bottom, no opposite mould available. Important: this is a DECALCIFIED specimen, so you see the calcified part negative. Ordovician, scale bar 5mm. 2 pics of the same specimen. Any ideas? Echinoderm? Porifera? Bryozoan?...
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I drive 8 hours with a friend to a location he remembers from his childhood as yielding a lot. Oh boy it did. 100% worth the drive. Lake Huron, among the agates, pyrite, yooperlite, has some extraordinary Devonian fossils. All fossils were collected from the beach of his family’s property except for the fenestelid bryozoan, which was found at a gas station on the way there. please enjoy this collection of gastropods, petoskey stones, various tabulate corals, crinoids, stromatoporoids, bivalves, Brachiopods, tenteculites, horn corals, an unidentified agatized fossil in jasper matrix
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These fossil stromatoporoids came from the Traverse formation, Potter formation, Bell Shale, and antrim/dundee formation locations near the north eastern tip of the Mitt in Michigan USA.
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Red chert radial sponge from the Pennsylvanian Naco Formation found north of Payson, Arizona. NB. Pennsylvan is a subperiod, epoch is Late and age is Moscovian. (Desmoinian under old system.) Dilliard, Kelly & Rigby, J.K.. (2001). The new demosponges, Chaunactis olsoni and Haplistion nacoense, and associated sponges from the Pennsylvanian Naco Formation, Central Arizona. Brigham Young University Geology Studies. 46. 1-11. geo_stud_vol_46_dilliard_rigby.pdf link
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- chaunactis olsoni
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Stromatoporids, other sponges, or not a fossil? Thanks!
SilurianSalamander posted a topic in Fossil ID
All collected in gravel and beach rocks from SW Wisconsin. Thanks so much for the help! I love this community:) -
sponge or tabulate coral? Agatized Paleozoic fossil found in a gravel pit
SilurianSalamander posted a topic in Fossil ID
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- stromatoporid
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Found this in Big Brook, NJ (Late Cretaceous Navesink Fm.). It's about 2.5 cm wide. I don't even know what phylum to put it in. My first thought was bryozoan. There is one very thorough paper on Bryozoa of the Atlantic Coastal Plain, but it has nothing to fit the bill. Looks like sponge with those big holes. Found a picture of Discopora sp. that looks very close, but that genus is not listed in PBDB anywhere in North America. Gabb thought he had something similar from NJ, but it turned out to be a sand concretion. The last picture is the underside of the specimen, which may or may not be a thi
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- invertebrate
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I pulled this out of the Mahantango Formation of Pennsylvania a couple weeks ago. It's middle Devonain. TI though as I pulled it out of the scree that it was more of the myriad corals, but looking at it more closely it is most certainly not (although there are a couple Rugosa tucked in there), the structure is all wrong. I was told by one sponge enthusiast that it is definitely sponge. some kind of sponge. I'm a taxonomist at heart, and it drives me nuts if I can't at least narrow something down to a family. The literature on porifera is woefully scant, especially on this coast. Looking a
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From the album: Delaware Fossils
A few of the hundreds of microfossils I found in one day of lying on the sandy spoils with a pair of reading glasses Coin is about 2 cm.-
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- terebratulina
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Just a note that James Cullison's 1944 monograph on the rocks and fauna of the upper Lower Ordovician of Missouri and Arkansas is now freely available for download or perusal at https://archive.org/details/paper-cullison-1944-the-stratigraphy-of-some-lower-ordovician-formations-of-the This publication has always been devilishly tough to get a hold of. A nice systematic paleontology section deals with the many gastropods and other mollusks as well as the less diverse brachiopods, trilobites, and sponges. The monograph covers the following formations as currently accepted in Missour-
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Hi, this is a decalcified specimen (upper Ordovician - NE Italy). In order to understand the fossilization process of these specimens I've linked an image (Fig.1) of the internal mould of a Caryocrinitida (Rhombifera) with basal plates and stem facet preserved (from the same slab). So we're talking about the mould of the calcified parts of a living thing. Then I've linked some images of the specimen to identify: 2a-2b the whole specimen. 2c-2d I've carefully opened the slab. The "internal" part (?) 2e-2e_edit the "external" part (?) I'm wondering about a
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- ordovician
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980 million year old soft sponges may have been found in a reef associated with microbiolites in Canada, pushing back sponge fossils 300 million years. The lack of a fully mineralized skeleton in the earliest sponges may make fossilization and recognition difficult. Turner, E.C. Possible poriferan body fossils in early Neoproterozoic microbial reefs. Nature (2021). https://doi.org/10.1038/s41586-021-03773-z https://www.nature.com/articles/s41586-021-03773-z
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Help requested: Western NY / PA Late Devonian eurypterids & sponges
pefty posted a topic in Fossil Hunting Trips
This Missourian is headed out to the Late Devonian of western New York state and Pennsylvania this coming week and hoping for a little help from y'all on localities for eurypterids and the sponge Hydnoceras. Are Clarke's (1920) Hydnoceras localities at Brown Hill (near Cohocton, NY) and Irish Hill (near Bath, NY) still productive and accessible? Are Ehlers' (1935) eurypterid localities at Bush Hill (near Smethport, PA)? Or are there other spots I should be checking out? I understand that the Trimmers Rock Formation in the vicinity of Bloomsburg, PA, is also worth a look for eurypterids, but I -
From the album: C&D Canal Micro Fossils
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Hello from Baltic Sea! In Svetlogorsk only one find this time. This is Porifera, i think. I don't know the age yet. Found her among the ferruginous sand. It is a sponge, but very fragile. By how did she survive all this time? Especially after falling off a slope... Inside, they have an interesting layered structure. The place of the find is marked with gloves. She fell from about 7 meters.
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Alternate title: I found Pennsylvanian fossilized Sesame Wasa Crispbread; is it safe to eat? I have visited the Pennsylvanian Naco Formation east of Payson, Arizona several times this long hot summer and found some interesting sponges. My most interesting find was this 5 cm wide sponge that looked almost exactly like a Wasa Crispbread with sesame seeds on top. I was about to nickname it a Wasa sponge until I found out that it had a genus name: Stioderma. Pennsylvanian Desmoinian Stioderma occur in Texas. Link It is amazing how many fossils I have identified from the Pennsy
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Stioderma coscinum from Rigby and Mapes 2000. Sponges are common in the Pennsylvanian Naco Formation of central Arizona. A friend and I collected pieces of Stioderma sponges near Roberts Mesa. Stioderma sponges have a set of very distinctive features that make an ID much easier than other Arizona sponges. They have spicules that are distally modified into layered rounded pustules that are set atop a surface with funnel shaped holes. My sponge has an edge that curves under and is covered with pustules. Further research might reveal what species they are. S
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This is the largest Wewokella solida that I have found from the Pennsylvanian Naco Formation in Arizona. It is a thick-walled, sub-cylindrical, hollow sponge with simple mostly 4 to 2 pointed spicules. It is differentiated from the related Regispongia genus that has spicules with many more points, polyactine. Sponge is found from the Middle Pennsylvanian to the Early Permian in Arizona, Texas, Oklahoma, Utah, Ohio and maybe New Mexico. Description from Girty: “WEWOKELLA SOLIDA Girty. Plate I, figures 12-13b. 1911. Wewokella solida. Girty, New Yo
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- gila county
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I believe the specimen shown in the attached photos fell from a dump truck removing spoil from home excavations up the street from my residence in Gainesville, Prince William County, Virginia. This area lies within the Triassic-Jurassic Culpeper Basin. The specimen weighs 1.5 kilograms has a circumference of 33cm along its major axis, and 29cm along its minor axis. Based on images that are available on the INTERNET, I surmise that this is a fossil sponge. That said, I have absolutely no background or experience in Geology or Paleontology and would appreciate any information or
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From the album: Lower Devonian Helderberg Group in Eastern NY
Hindia sphaeroidalis from the new Scotland formation -
I have read that finding spicules preserved in sponge is quite rare. I am finding sponge fossils with what I believe are spicules, but the fossils seem to be all calcium carbonate, no silica. this seems to me to show the original sponge body was aragonite or calcite based. This was found on the north eastern side of the tip of the Mitt in Michigan The area is considered Middle Devonian, but these were found on the shore of Lake Huron, so there is also the possibility that they are glacial transports. Comments welcome.
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Hello, Thanks to all for identifying my first of three 'mystery' fossil finds in Jackson County, Missouri. This second item keeps appearing in the chert used for landscaping at a building several decades old. As before I've been unable to identify it by photos on the internet for comparison. Any idea what they may be? I didn't want to break one in half and disturb the integrity of the piece. Thanks again.
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Hello, I live near west Jackson County, Missouri. I found this fossil while I was walking my dog. It was part of the landscaping for the front of a building that has been there for 20 years or more. No one knows the origin of the material for the landscaping. Lots of reading, I found most of the chert in the landscaping has crinoids as a point of the time period, Devonian? Can't find any photos to compare it with on the internet, been trying for 2 months, a crash course on paleontology 101. I see Missouri in a different light from it all. Can this be identified? Thanks for the opportunity to s
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- west missouri
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Hi again, Didn't think I should bother you guys with another sponge, but this is a bit peculiar and I can't find anything about sponges on sticks? This was found in the Kristianstad Basin, Cretaceous period. It is heavily erroded and mineralized, but probably a sponge. It seems to have a circular growth around what seems to be a stick of some sort. They seem proprotional, so I figure they grew together, but they might not be the same spieces? (the stick + the sponge). The images does not make the fossil justice, but it is a very voluminoes sponge with b
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