fossil_sea_urchin Posted August 13, 2019 Share Posted August 13, 2019 It's plesiosaur because it's hourglass-shaped, unlike the disc-shaped ichthyosaur paddle digits. The bone is about the right size for Plesiosaurus and plesiosaurus is by far the most abundant plesiosaur in the formation. The species was just a guess, but there's only one known species of Plesiosaurus. @JohnJ Link to comment Share on other sites More sharing options...
JohnJ Posted August 13, 2019 Share Posted August 13, 2019 15 minutes ago, fossil_sea_urchin said: It's plesiosaur because it's hourglass-shaped, unlike the disc-shaped ichthyosaur paddle digits. The bone is about the right size for Plesiosaurus and plesiosaurus is by far the most abundant plesiosaur in the formation. The species was just a guess, but there's only one known species of Plesiosaurus. @JohnJ Since accurate information is also part of the FOTM mission, your find may be better described as part of an "unknown plesiosaurid". Dr. Adam S. Smith mentions a greater diversity of plesiosaurids are known for that area. 6 The human mind has the ability to believe anything is true. - JJ Link to comment Share on other sites More sharing options...
fossil_sea_urchin Posted August 13, 2019 Share Posted August 13, 2019 11 minutes ago, JohnJ said: Since accurate information is also part of the FOTM mission, your find may be better described as part of an "unknown plesiosaurid". Dr. Adam S. Smith mentions a greater diversity of plesiosaurids are known for that area. It can't be the rhomaleosaurid because it's not elongated at all, which is typical of that group. It can't be Seeleyosaurus or Hydrorion either because they come from Germany and have no definitive remains from the UK. 3 Link to comment Share on other sites More sharing options...
fossil_sea_urchin Posted August 13, 2019 Share Posted August 13, 2019 Attenborosaurus and Archaeonectrus are usually classified as pliosaurids which often have quite elongated paddle digits unlike plesiosaurs that have more robust digits in the middle of the paddle. 2 Link to comment Share on other sites More sharing options...
Auspex Posted August 13, 2019 Share Posted August 13, 2019 This is a wonderful discussion! Lots of solid, arcane information. Thank you! In the end, it may be wise to hedge to the conservative side and call it "Plesiosaurid cf Plesiosaurus dolichodeirus. This is as much as the physical evidence can say, and the "CF" allows for informed speculation. 7 "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
JohnJ Posted August 13, 2019 Share Posted August 13, 2019 38 minutes ago, fossil_sea_urchin said: Attenborosaurus and Archaeonectrus are usually classified as pliosaurids which often have quite elongated paddle digits unlike plesiosaurs that have more robust digits in the middle of the paddle. You have the advantage of the specimen in hand; we have only seen two dark photos. It's good that you have tried to accurately identify your specimen. @Auspex offers good advice...another hedge against the probability there was more than one species of Plesiosaur in those waters at the time. 2 The human mind has the ability to believe anything is true. - JJ Link to comment Share on other sites More sharing options...
fossil_sea_urchin Posted August 13, 2019 Share Posted August 13, 2019 11 minutes ago, Auspex said: This is a wonderful discussion! Lots of solid, arcane information. Thank you! In the end, it may be wise to hedge to the conservative side and call it "Plesiosaurid cf Plesiosaurus dolichodeirus. This is as much as the physical evidence can say, and the "CF" allows for informed speculation. Agreed Link to comment Share on other sites More sharing options...
MeargleSchmeargl Posted August 14, 2019 Share Posted August 14, 2019 Last entry before college! GCSU hype! Date found: 8/12/19 Name: Aphelaspis brachyphasis Trilobite split with dual-sided plate Geologic age/Fm: Cambrian Conasauga Fm (~500 MYA) Location: Chatsworth, GA One of the better packages I've gotten in just 1 split. Dunno if this would be good as one entry, but I'm entering the flip side of the positive slab with the split since it's on the same slab. 13 Every single fossil you see is a miracle set in stone, and should be treated as such. Link to comment Share on other sites More sharing options...
fifbrindacier Posted August 15, 2019 Share Posted August 15, 2019 On 8/8/2019 at 4:28 PM, fifbrindacier said: Found on August, 3th, 2019 Phacops (Phacops) aff. fecundus degener and Phacops sp. Early Devonian (Emsian) Col d'Aubisque, Pyrénées Atlantiques, France I have cleaned them a little : 5 "On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry) "We only well see with the heart, the essential is invisible for the eyes." In memory of Doren Link to comment Share on other sites More sharing options...
connorp Posted August 16, 2019 Share Posted August 16, 2019 Date of Discovery: August 5th, 2019 Name: Orodus sp., an early shark. Geologic Age/Formation: LaSalle Limestone Member of the Bond Formation, Pennsylvanian. Location: Oglesby, IL, USA 11 Link to comment Share on other sites More sharing options...
digit Posted August 16, 2019 Author Share Posted August 16, 2019 Very cool! I love seeing shark teeth that I never knew about before. Cheers. -Ken 1 Link to comment Share on other sites More sharing options...
Welsh Wizard Posted August 17, 2019 Share Posted August 17, 2019 Hi Here is is a link to a partial ichthyosaur that me and my brother found and I posted on the forum in March 2013. I found the first part of the skull on Boxing Day 2012 and then other parts were found over the next few months. Ive finally got around to having it prepared. The preparation was done by Craig Chivers and he started about two weeks ago and finished yesterday. It has been backed onto fibreglass and reverse prepped. There is about 3/4 of the skull including lots of teeth, along with one of the shoulders, a paddle and a number of ribs. Found : March 2013 Name: Ichthyosaurus sp, possibly a communis Geologic age: Jurassic (Hettangian) - circa 190 million years Location: Lavernock Point, UK - Preplanobis beds Prepped this month. Length of the specimen is about 1.5 metre We were looking for the rest of this specimen when we found the Welsh Dinosaur. 22 Link to comment Share on other sites More sharing options...
fifbrindacier Posted August 17, 2019 Share Posted August 17, 2019 On 8/17/2019 at 11:45 AM, Welsh Wizard said: Ichthyosaurus sp, possibly a communis Jurassic Hettangian - circa 190 million years Lavernock Point, UK Preplanobis beds Length of the specimen is about 1.5 metre Superb ! 1 "On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry) "We only well see with the heart, the essential is invisible for the eyes." In memory of Doren Link to comment Share on other sites More sharing options...
JohnBrewer Posted August 17, 2019 Share Posted August 17, 2019 On 8/17/2019 at 11:45 AM, Welsh Wizard said: Ichthyosaurus sp, possibly a communis Jurassic Hettangian - circa 190 million years Lavernock Point, UK Preplanobis beds Length of the specimen is about 1.5 metre Stunning! 1 John Map of UK fossil sites Link to comment Share on other sites More sharing options...
JohnBrewer Posted August 17, 2019 Share Posted August 17, 2019 Judging by the length of its jaw and the location I’d say I. communis is a high probability. 4 John Map of UK fossil sites Link to comment Share on other sites More sharing options...
Welsh Wizard Posted August 18, 2019 Share Posted August 18, 2019 Hi JohnBrewer and fifbrindacier. Thanks for the comments. Much appreciated. Nick 2 Link to comment Share on other sites More sharing options...
deutscheben Posted August 19, 2019 Share Posted August 19, 2019 I would like to add my most recent shark find to the contest for this month: Found: 8/17/19 Name: Listracanthus hystrix (4 associated shark dermal denticles) Location: Starved Rock Clay Products Pit, Utica, IL Geologic Age/Formation: Pennsylvanian, Mecca Quarry Shale Member of the Carbondale Formation 12 Link to comment Share on other sites More sharing options...
digit Posted August 19, 2019 Author Share Posted August 19, 2019 Now there's something you don't see every day. Shaping up to be another great and diverse month for the FOTM contest. Cheers. -Ken 1 Link to comment Share on other sites More sharing options...
connorp Posted August 20, 2019 Share Posted August 20, 2019 I'd like to add in my best find from the Starved Rock Clay Products Pit as well. Found: August 17, 2019 Name: Two acanthodian fish spines Location: Starved Rock Clay Products Pit, Utica, IL Geologic Age/Formation: Mecca Quarry Shale Member of the Carbondale Formation (Pennsylvanian) 10 Link to comment Share on other sites More sharing options...
MeargleSchmeargl Posted August 20, 2019 Share Posted August 20, 2019 Watching from Uni with great anticipation! 1 Every single fossil you see is a miracle set in stone, and should be treated as such. Link to comment Share on other sites More sharing options...
kameran Posted August 20, 2019 Share Posted August 20, 2019 Hi All, Here's an Asteroceras and Promicroceras ammonite that I found in an intermediate nodule at Lyme Regis - It is very unusual to find a nodule so full. I have included a photo of it as found and also after it had been prepared by Paddy Howe. Thanks Found: August 15, 2019 Name: Asteroceras and Promicroceras ammonite Location: Lyme Regis, Dorset, England Geologic Age/Formation: Jurassic As found Post prep 22 Link to comment Share on other sites More sharing options...
fossilsonwheels Posted August 22, 2019 Share Posted August 22, 2019 On 8/19/2019 at 5:26 PM, deutscheben said: I would like to add my most recent shark find to the contest for this month: Found: 8/17/19 Name: Listracanthus hystrix (4 associated shark dermal denticles) Location: Starved Rock Clay Products Pit, Utica, IL Geologic Age/Formation: Pennsylvanian, Mecca Quarry Shale Member of the Carbondale Formation Fantastic find !!!! Beautiful detail. Mine is quite difficult to see so I am a little jealous. Link to comment Share on other sites More sharing options...
Jackson g Posted August 22, 2019 Share Posted August 22, 2019 Figured I'd throw up my nicest Brach find of the month. Found it exposed ventrally, and prepared from the other side. Interesting preservation with both valves. Found: August 13, 2019, prep finished August 16, 2019 Name: Brachiopod, Spirifer Sp. Location: Benton County, Missouri, USA Geologic Age/Formation: Mississippian Age 14 Link to comment Share on other sites More sharing options...
Scylla Posted August 23, 2019 Share Posted August 23, 2019 On 8/7/2019 at 12:53 PM, FranzBernhard said: LOL!! So, my area has already transformed into Florida . Too hot or too many thunderstorms or too rainy during the summer, incl. all kinds of bugs. Winter is much better, only a few weeks with frost and snow left - best time to prospect (no vegetation) and also to dig (still not hot). Franz Bernhard Unfortunately, it seems that many places are changing into Florida as far as weather patterns go. Florida is changing into Atlantis 2 Link to comment Share on other sites More sharing options...
Kane Posted August 25, 2019 Share Posted August 25, 2019 Opting for rarity over beauty, I would be remiss not to enter what, for some trilobite collectors, is a once in a lifetime find. Comparative black and white image from Ludvigsen, R. (1979) Fossils of Ontario Part 1: The Trilobites. Found: August 23, 2019 Name: Terataspis grandis (pygidium fragment) Location: London, Canada (imported fill) Geologic Age/Formation: L. Devonian, Bois Blanc Fm. 19 ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
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