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From the album: MY FOSSIL Collection - Dpaul7
Silver Iridescent Ammonite Fossils Mahajanga Province, Madagascar TIME PERIOD: Middle Cretaceous (110 million years ago) Data: Ammonoids are an extinct group of marine mollusc animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs are more closely related to living coleoids (i.e., octopuses, squid, and cuttlefish) than they are to shelled nautiloids such as the living Nautilus species. The earliest ammonites appear during the Devonian, and the last species died out during the Cretaceous–Paleogene extinction event. Ammonites are excellent index fossils, and it is often possible to link the rock layer in which a particular species or genus is found to specific geologic time periods. Their fossil shells usually take the form of planispirals, although there were some helically spiraled and nonspiraled forms (known as heteromorphs). The name "ammonite", from which the scientific term is derived, was inspired by the spiral shape of their fossilized shells, which somewhat resemble tightly coiled rams' horns. Pliny the Elder (d. 79 AD near Pompeii) called fossils of these animals ammonis cornua ("horns of Ammon") because the Egyptian god Ammon (Amun) was typically depicted wearing ram's horns. Often the name of an ammonite genus ends in -ceras, which is Greek for "horn". Kingdom: Animalia Phylum: Mollusca Class: Cephalopoda Order: Ammonitida-
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From the album: MY FOSSIL Collection - Dpaul7
Ammonite Fossil Location: Unknown, possibly Morocco Ammonoids are an extinct group of marine mollusc animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs are more closely related to living coleoids (i.e., octopuses, squid, and cuttlefish) than they are to shelled nautiloids such as the living Nautilus species. The earliest ammonites appear during the Devonian, and the last species died out during the Cretaceous–Paleogene extinction event. Ammonites are excellent index fossils, and it is often possible to link the rock layer in which a particular species or genus is found to specific geologic time periods. Their fossil shells usually take the form of planispirals, although there were some helically spiraled and nonspiraled forms (known as heteromorphs). The name "ammonite", from which the scientific term is derived, was inspired by the spiral shape of their fossilized shells, which somewhat resemble tightly coiled rams' horns. Pliny the Elder (d. 79 AD near Pompeii) called fossils of these animals ammonis cornua ("horns of Ammon") because the Egyptian god Ammon (Amun) was typically depicted wearing ram's horns. Often the name of an ammonite genus ends in -ceras, which is Greek for "horn". Kingdom: Animalia Phylum: Mollusca Class: Cephalopoda Order: Ammonitida-
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From the album: MY FOSSIL Collection - Dpaul7
Natural Iridescent Ammonite Ammolite Specimen Fossil Madagascar, probably Mahajanga Province Early Cretaceous period - Early Aptian (about 115 million years old) Cleoniceras is a rather involute, high-whorled hoplitid from the Lower to basal Middle Albian of Europe, Madagascar, and Transcaspian region. The shell has a generally small umbilicus, arched to acute venter, and typically at some growth stage, falcoid ribs that spring in pairs from umbilical tubercles, usually disappearing on the outer whorls. Ammonoids are an extinct group of marine mollusc animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs are more closely related to living coleoids (i.e., octopuses, squid, and cuttlefish) than they are to shelled nautiloids such as the living Nautilus species. The earliest ammonites appear during the Devonian, and the last species died out during the Cretaceous–Paleogene extinction event. Ammonites are excellent index fossils, and it is often possible to link the rock layer in which a particular species or genus is found to specific geologic time periods. Their fossil shells usually take the form of planispirals, although there were some helically spiraled and nonspiraled forms (known as heteromorphs). The name "ammonite", from which the scientific term is derived, was inspired by the spiral shape of their fossilized shells, which somewhat resemble tightly coiled rams' horns. Pliny the Elder (d. 79 AD near Pompeii) called fossils of these animals ammonis cornua ("horns of Ammon") because the Egyptian god Ammon (Amun) was typically depicted wearing ram's horns. Often the name of an ammonite genus ends in -ceras, which is Greek for "horn". Ammolite is an opal-like organic gemstone found primarily along the eastern slopes of the Rocky Mountains of North America. It is made of the fossilized shells of ammonites, which in turn are composed primarily of aragonite, the same mineral contained in nacre, with a microstructure inherited from the shell. It is one of few biogenic gemstones; others include amber and pearl. Ammolite comes from the fossil shells of the Upper Cretaceous disk-shaped ammonites Placenticeras meeki and Placenticeras intercalare, and (to a lesser degree) the cylindrical baculite, Baculites compressus. Ammonites were cephalopods, that thrived in tropical seas until becoming extinct along with the dinosaurs at the end of the Mesozoic era. Other fossils, such as many found in Madagascar and Alberta, display iridescence. These iridescent ammonites are often of gem quality (ammolite) when polished. In no case would this iridescence have been visible during the animal's life; additional shell layers covered it. Kingdom: Animalia Phylum: Mollusca Class: Cephalopoda Order: Ammonitida Family: Hoplitidae Genus: Cleoniceras -
From the album: MY FOSSIL Collection - Dpaul7
Natural Iridescent Ammonite Ammolite Specimen Fossil Madagascar, probably Mahajanga Province Early Cretaceous period - Early Aptian (about 115 million years old) Cleoniceras is a rather involute, high-whorled hoplitid from the Lower to basal Middle Albian of Europe, Madagascar, and Transcaspian region. The shell has a generally small umbilicus, arched to acute venter, and typically at some growth stage, falcoid ribs that spring in pairs from umbilical tubercles, usually disappearing on the outer whorls. Ammonoids are an extinct group of marine mollusc animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs are more closely related to living coleoids (i.e., octopuses, squid, and cuttlefish) than they are to shelled nautiloids such as the living Nautilus species. The earliest ammonites appear during the Devonian, and the last species died out during the Cretaceous–Paleogene extinction event. Ammonites are excellent index fossils, and it is often possible to link the rock layer in which a particular species or genus is found to specific geologic time periods. Their fossil shells usually take the form of planispirals, although there were some helically spiraled and nonspiraled forms (known as heteromorphs). The name "ammonite", from which the scientific term is derived, was inspired by the spiral shape of their fossilized shells, which somewhat resemble tightly coiled rams' horns. Pliny the Elder (d. 79 AD near Pompeii) called fossils of these animals ammonis cornua ("horns of Ammon") because the Egyptian god Ammon (Amun) was typically depicted wearing ram's horns. Often the name of an ammonite genus ends in -ceras, which is Greek for "horn". Ammolite is an opal-like organic gemstone found primarily along the eastern slopes of the Rocky Mountains of North America. It is made of the fossilized shells of ammonites, which in turn are composed primarily of aragonite, the same mineral contained in nacre, with a microstructure inherited from the shell. It is one of few biogenic gemstones; others include amber and pearl. Ammolite comes from the fossil shells of the Upper Cretaceous disk-shaped ammonites Placenticeras meeki and Placenticeras intercalare, and (to a lesser degree) the cylindrical baculite, Baculites compressus. Ammonites were cephalopods, that thrived in tropical seas until becoming extinct along with the dinosaurs at the end of the Mesozoic era. Other fossils, such as many found in Madagascar and Alberta, display iridescence. These iridescent ammonites are often of gem quality (ammolite) when polished. In no case would this iridescence have been visible during the animal's life; additional shell layers covered it. Kingdom: Animalia Phylum: Mollusca Class: Cephalopoda Order: Ammonitida Family: Hoplitidae Genus: Cleoniceras -
Hi, found a couple of nodules, thought this one had a small Ammonite in, went to remove a bit of the bulk and found a larger one insure, you think I best prep around the outside first to expose the entire Ammonite then work inwards or you think worth tapping to remove more bulk ? Thanks.
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3 fossils from the lower Chalk upper Cretaceous Swanage Bay Dorset All look like the same species and came from the same strata
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I found what appears to be a small (1 cm) ammonite in Green River, Utah back in 1993. Anyone have any idea what genus it is? I don't know the geologic horizon I found it in but looking at a geologic map of the San Rafael desert, it's probably Cretaceous. I do remember it's from the East bank of the Green River, near the Old Highway Elgin Road. Matrix appears to be limestone if that helps (reacts vigorously to acid). Thanks for the help.
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Hi everyone, I made a trip in the Judean Mountains around the city of Ramallah yesterday. It was there that I found this specimen. The scale provide is in cm: the specimen is about 6 cm long, that is about 2.5 inches. I found it on a high hill at an altitude of about 800 m (2600), on the ground among countless rock fragments. The hill was subject to severe erosion and bedrock was visible all over with patches of earth and smaller rocks in between. The rock seemed to be limestone, with many features that I as a novice can only describe in the most casual terms: many spherical holes turtle shell pattern on the surface of rock large and small pebbles embedded in the rock, apparently slightly more resistant to erosion I would like to ask you the identity ofthis specimen, and would also be interested to read tips on how to identify promising spots to find more fossils based on altitude, surrounding rock, layers... Thank you for your time!
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Hi, thought would have a little look/dabble with this as been in a box a while, the top always looked like it would pop straight off, looks like this is the case but spines on the opposite side are still fully in tact but I think the fracture runs straight through, do I "peel" off the top and prep the spines out to add later or attempt to prep around the spines, either way the top will lift off, cheers.
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I found this many years ago out by Lake Whitney in Texas near White Bluff. It is cretaceous, but I’ll have to look up the formation. I don’t know if it is possible to ID it. It is different from any of the other species I’ve found in the area.
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As i understand this is the part of ammonite. Could anybody draw the ammonite structure and show me the place where this part belongs to? Thank you very much!
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Hi, Whilst collecting yesterday along the coast between Bonchurch and Luccombe, I was searching around on some accessible parts of the cliff face and came across this very nice, nearly intact ammonite in a scree slope of clay like material (@Ludwigia you were right!). The cliff is divided up between the Sandrock Fm. and the Monk's Bay Sandstone Fm. which are the upper parts of the Lower Greensand group, dating to the Albian stage of the Cretaceous. As far as I can tell it's a likely a member of the Hoplitidae, which is a very common family in the Albian strata here, however considering the fairly nice and nearly whole condition of the specimen would it be possible to ID it further to a genus or even species level? The closest match I can find is Euhoplites bucklandi but even then there are some differences. I've attached images below showing the specimen and it's keel. Any help would be appreciated. Thanks, Theo
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Hi all, Just wanted to share this little loading animation I made for my ICT class. Thought you guys might like it So, it's in total 165 frames. Those were all made on the program Inkscape. Then I used the program GIMP 2 to add all the layers together and make it into a GIF format. (I have no clue if this would be possible in real life back then, but the goal is not to make it scientifically accurate anyways ) (And no, this is not meant to be a specific genus... It's just the Ammonite madeupbymaximus). Let me know your thoughts! Best regards, Max
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Well this one is stumping my go-to people for blossom sand IDs. Thinking it may be a juvenile but can't place exactly which one it could be. This is from the blossom sand formation in Lamar County Texas, thank you in advance.
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I found this ammonite segment a while back in SE Johnson County in an area that is right near the Edwards Formation that is adjoined by a complex area that has Duck Creek and Ft. Worth limestone to name a few mixed in. I tend to think it may have been the complex formation, but I couldn’t tell you what part of it. I found it on top of the ground after a road was put in for a new house being built near some property I own out in the country. It is a segment of an ammonite. It weighs about 10 pounds I’d say. Is about 8 inches long and 6 inches tall or thick. Can anyone tell me about what large ammonites might be in that area?
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I found this fossil kind of out of place at a hobby store and the only identification it had was "Madagascar Ammonite". I know it's no fun that I bought it and didn't dig it up myself but any further information on what kind of ammonite it was and when it lived would be much appreciated. I tried to be as detailed as possible in the picture to make up for the lack of info. Also, what's up with the iridescence? Is it special?
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Here is a 2nd ammonite found right near the first one, but a few years earlier. Can anyone tell me what the crystalline component is? This is from the Edwards Formation near Rio Vista, TX. I think it's one of my favorite ammonites because of the crystalline material. I'd kind of like to bleach the crystals to clean it up, but I'm not sure if that's possible.
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I found this ammonite a few years ago. Shortly after I found it a piece broke off the front revealing some of the internal structure of the ammonite. I know it is pretty worn down, but can anyone give me an idea of what kind it is? As best I can tell I found it in the Edwards formation outside of Rio Vista, TX.
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After visiting my crew out in Placitas (short drive from ABQ), I decided to stop at a BLM open space at the roadside. There is a supposed Upper Cretaceous section exposed here and I figured I would eat my lunch and go for a short walk. If there was an K section, it did not look the part... ...the surface of the slopes are covered with Carboniferous (Pennsylvanian) rocks. I mosied along the trail, munching on a granola bar when I spotted some concretions and shale up a gully... ...and upon further inspection, an ammonite! I quickly marched my coiled companion to the truck...back to work! There is definitely some Upper Cretaceous rocks here and well worth a return trip. Planned or impromptu...happy hunting! -P.
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I have only visited this place once as it is a bit of a hike to get to. Hopefully I will attach the photos in the correct order otherwise 1 - Deshayeites forbesi 2 - Deshayeites forbesi showing in tact siphuncle same specimen as 1 3 - Inside view of part of an Amia fish scull, the museum knew exactly which part I have no idea without looking out the paper they gave me. 4- Part of a lobster leg with small gastropod to the left. 5 - Lobster antenna 6 - Fish fin spine 7 - Holocystis elegans coral
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The Trip That Nearly Didn't Start (Lengthy image-intensive trip report follows) Tammy and I had planned a fossil hunting trip to Wyoming for the third week of September to redeem our day of digging (splitting rock) at the Green River Formation quarry that @sseth had earlier so generously offered up as a prize on an auction to benefit TFF. We had our airfares, a rental car reserved, and a series of hotels booked across the state ready for a monumental fossil hunting trip. The one small problem was the not so small storm named Hurricane Irma that tore through the northern Caribbean and had its sights set on the Florida and being wider than the peninsula, no Floridian was going to miss the effects of this storm. Earlier in the week the forecast had the centerline of the cone of probability for the track of the storm hitting Miami and traveling up the eastern coast where Boca Raton sat squarely in the cross-hairs. I guess that if you are going to be in the path of some major destruction it is better to be the target early in the week rather that toward the end when the storm is at our doorstep. Thankfully (for us, but not so for those in the Lower Keys and Southwest Florida), the storm's turn to the north was delayed and though we were now on the stronger NE quadrant of the storm, the eye was significantly far away to the west that we escaped the strongest of winds. The storm unleashed squadrons of tornadoes and micro-bursts which had us ducking into our safe room for cover. During the storm unidirectional winds first blew from the east and then from the south as the storm passed us to the west but the tornadic winds were something else as the trees started whipping around in all directions quite violently. Luckily for us, the house survived with no structural damage. The newer more sturdy pool cage that replaced the original one that Wilma had crumpled and stuffed into the pool back in 2005 (shockingly) did not even lose a single screen panel. The damage on our property was limited to toppled trees and broken limbs and branches. We lost power even before the eye wall had made first landfall in the Florida Keys. As soon as it was safe to go outside, we started the portable generator and ran extension cords throughout the house to keep refrigerator, freezer and a box fan and a few lights powered. We've cooked on our outdoor grill and Coleman camp stove in previous power outages caused by the rash of hurricanes in 2004/05 and so we were well prepared and never at risk of starvation (we actually ate rather well). While Wilma had run over the house in late October, 2005 when the temperatures had cooled somewhat from the hot muggy Florida summer, we were not so lucky this time. Outdoor temps in the low 90's were soon matched by the 88 degrees inside which made sleeping difficult (even with a fan). We spent the days cutting up the downed foliage and stacking it into many piles along the street in back of the house as well as a towering mount in the cul-de-sac in front (which is still growing in size to this day and is due to be cleared by FEMA sometime in the next 2-3 weeks). Taking frequent breaks inside to lay down on the floor in front of the fan to avoid all-out heat exhaustion, both Tammy and I worked to clear the property as much as we could and monitor the progress of power restoration in our county. Over 70% of homes and businesses were left in the dark after Irma but Florida Power & Light had learned a few things after performing poorly in the 2004/05 hurricane seasons. They had staged a bunch of replacement parts and crews fresh from working in Houston were in the state working to get the grid back online. We couldn't leave on our trip unless we got power back and we watched the percentage of customers without power slowly but steadily decrease until one evening our power flickered and within a few minutes was restored for good. I had been waiting till the last possible minute to cancel my plans and try to get refunds for the reservations we'd made for this trip. I was tired of a week of hot sweaty yard work clearing debris and I was ready for some cooler Wyoming temps.
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So i had to order a new Splitting Chisel after losing mine on Runswick bay in Yorkshire. Anyway I tried opening this Ammonite that i found in Mappleton with a hammer, but it was very tough. I finally opened it today. First picture is how i found it showing the tough matrix.
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@GeschWhat, Do you think this is a coprolite or gut contents? This is from a very soft shale and was said to have been collected from the "Kamp Ranch Formation" near Dallas, TX (although I think it must have been another member of the Eagle Ford Group based on the composition and nature of the matrix) (If anyone is familiar with these Prionocyclus-rich shales and has suggestions on which member they likely came from, please chime in). In this image, I have pointed out 2 of the fish bones (there may be more). You can also see bivalves. The fossils in this layer are isolated, so it's not like a "hash plate". Most of the fossils are Prionocyclus hyatti (?). But I found this discrete concentration of bits, and I wonder if it is a coprolite or gut contents. Maybe from an ammonite... Scale in this photo is mm. Here is a picture of a piece of the shale showing the abundant ammonites. (scale in cm/mm) Thanks for any assistance!
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I found this a few years ago walking through the countryside near Lake Whitney on what is now called Lake Whitney Ranch in Bosque county off of hwy or FM 56. The unique thing about this one was it was sitting at the base of a large tree in the woods. I guess the roots had pushed it up to the surface. I've got a dozen, maybe 2 dozen or more of numerous species, but I've never got an ID on any of them. This one may be hard to ID, because it has eroded away in places and has lichen growing on it.
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