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Showing results for tags 'spines'.
Found 16 results
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I recently discovered this in the Devonian Onondaga Formation of Ontario and am thinking it’s either a Placoderm or a Onychodontid based off the armour like texture which does not match any coral in the formation, their is also the presence of odd spine like structures. Any idea if it is one of these species?
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From the album: Texas Echinoids, ERose
Update: Since I originally posted this image I now have fairly positive identifications for three of these and a good guess on the fourth. From top to bottom: The knurled large spine is Paracidaris? texanus (Whitney & Kellum) one of two known cidarids in the formation; The second is Pseudodiadema aguileria (Maldonado) and is recognized by its triangular cross section; The third is the unknown. It looks like spines on some Goniopygus but there are no large Goniopygus in this strata. It is more likely a scrobicular spine (https://www.nhm.ac.uk/our-science/data/echinoid-directory/taxa/glos -
This block was on a pallet of what was called corkstone that i bought to use in a pond nearly 20 year's ago, I used the rest to border my koi pond but this one was too cool to pu into the water. i had it indoors for many year's but it got moved outdoors and developed a lot of moss, ,while it still looked cool i recently hit it with a pressure washer revealing more than had shown prior and since have become more curious about the center dis and cluster of spines. this morning I used a little sandblasting to erode the backside and this is what i have. I have no way to know were it came
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I found this last week Pretty cool kinda looks like a squished dinosaur haha what is it
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I have been told by a scientist that this belongs to a cockle but I'm having a very hard time seeing it as one. I have found several bivalves on line that have spines but can't find an exact match for the pattern on this thing. The thick section is a little over 5mm and the thin section is about 2mm. It does not slope down to 2mm it has steps in it, which I can't find on any bivalves on line. Also, the spines on all bivalves I've seen appear to fan out as they move from the rear (hinge area) to the thinner forward area but these spines are coming together at what appears to be the thinner area
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From the album: Cartier's favoroite fossils
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I have this piece, which sadly I do not know much about, being that it was acquired at an estate sale and had no info. I have not been able to find something similar looking online, except for maybe a small section of teeth from a helicoprionid shark? The piece is about 6 x 7" and the teeth(?) are about 1/2" in length.
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Looking for dorocidaris spines
FossilHunter.info posted a topic in Member Fossil Trades Bulletin Board
Hi I'm looking for dorocidaris spines, can anyone help me? -
Three productids with most of their spines intact, showing that they looked like hedgehogs. I haven't identified them further largely because I can't see the shells properly. (Edit: likely to be Echinoconchus or similar echinoconchid - see below) These are from a Brigantian (Mississippian) mudstone in NE England, Co.Durham. 1) About 6cm across 2) Interior brachial valve showing spines projecting around the edge from behind. About 3cm across. 3) about 4cm across:
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Here's probably the most interesting piece I came across this past summer .... It's provenance, in the Yukon Territory's northern Ogilvie Mtns., just a bit south of the Arctic Circle, is what might be described as an iconic Ordovician faunal assemblage, rich in large Gastropods, Orthocerid Nautiloids, large horn and tabulate corals and relatively few Brachiopods. Trilobites, however, seem to have been a bit player in this group ... Over many years, I've found only a half dozen partial trilobites at that exact spot. The other pygidia I've found are fairly conventional, similar to Ps
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Hi all! Under the presumption these are echinoderm I've been searching for anatomical features, particularly disarticulated crinoid and archaeocidaris of which both are plentiful in the matrix. In my searching I've been unable to find anything that even remotely resembles these pieces. Any input is much appreciated. Plattsburg fm. - Hickory Creek sh. I attached a group photo of some of them I found, followed by 4 select specimens showing each side front and back. For scale, field of view is ~1cm. Group shot Front
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This came from a friend in Morocco and it seems very strange. I added a scale to hopefully help. Thanks.
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Ive found this & other small fossils at ocean beach in San Francisco. Most look like sand dollars but this one has a foot w/clear metatarsals/phalanges & what looks like 3 vertabral columns or 3 portions of 1. Does anyone know what this is?
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From the album: Echinoidea from Calcários Apinhoados da Costa D'Arnes formation
Tiaromma sp with spines on oral view, Calcários Apinhoados da Costa D'Arnes formation, Upper Cenomanian, Portugal. 14 mm. -
From the album: Echinodermata
Pseudocidaris sp, Camadas de Alcobaça formation, Kimmeridgian, Portugal. Several spines 1.5-3 cm. -
From the album: Echinodermata
Stylocidaris affinis and Schizechinus serialis spines, Loco Formation, Lower Pliocene, Spain. 17 to 25 mm.
