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Lower Devonianing in Upstate New York
Jeffrey P replied to Jeffrey P's topic in Fossil Hunting Trips
And this is a sample of the brachiopods: The one on the far left is Cryptonella exima, a Terebratulid, the two in the upper center are Leptocoelia flabellites, an Atrypid. Both of these have both valves. Leptocoelia are the most abundant brachiopods at Glenerie. Below them are two single valve spiriferids, Acrospirifer arreutus, around an inch and a half in width. Finally, the one on the right is Cyrtina varia (both valves).
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Pirate shark joined the community -
Appreciate the FB. A cursory search on Amazon revealed a HL of 900,000 lumens! I have one in my cart that is just over 20$ that is 50,000 lumens and 50 hours of battery life. I'll await others FB but would think you are right. But I do know, that my 1500 lumen HL was far to weak when searching in the day. And those that I have gone with in the past, who are much more experienced than I, search with lamps even in the day (we search creeks, where there are many shadowed areas).
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Lower Devonianing in Upstate New York
Jeffrey P replied to Jeffrey P's topic in Fossil Hunting Trips
Some of the other gastropods: The three on the left are also Platystoma. The one on the right , just over an inch and a quarter, is Platyceras "spirale."
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The past two weeks I've been able to go out collecting a couple of times- two different locations, both Lower Devonian. Where I live the bedrock is all metamorphic. Nice scenery, wooded hills, lakes and wetlands, but metamorphic rock, so I have to drive over an hour to get to the nearest sedimentary exposures that are fossil bearing. My favorite locality that's within an hour and a half is Glenerie, which is located between Kingston and Saugerties just west of the Hudson River. It represents the type locality for the Glenerie Limestone. New York's Lower Devonian is divided into two groups: the Helderberg and the Tristates. The Tristates is the younger of the two and that's where the Glenerie Limestone is placed. I first visited the Glenerie site when I was a teenager. When I resumed fossil collecting 12 years ago, it was one of the first sites I revisited and quickly became a favorite (I lived much closer to it then.) For a while, I was there almost every week and this site was the first one I built up a collection from. As I became acquainted with other fossil sites, I visited Glenerie less often, but in recent years, inspired in part by my fossil hunting comrades, I've been going more. The Glenerie site is very rich in brachiopods which probably make up over 95% of the marine fauna. The vast majority of those are single valve. which display amazing detail in ornamentation, muscle scars, etc. Gastropods, tentaculites, bryozoans, and trilobites make up most of the rest of the fauna. Corals have been found by some of my friends on very rare occasions. I have found a single small nautiloid there as well as a partial crinoid calyx. I saw another this time, but unfortunately, was unable to extract it. The fossils are usually preserved in silica which resists the weathering that dssolves the limestone. Some of the limestone is densely packed with fossil shells. However, the rock is so hard that extracting the fossils which are actually softer than the matrix, is impossible. There are areas of the outcrop, near the top and in crevices where shells weather out complete and can often be obtained intact surface collecting. It was a good day for finding gastropods. I was able to collect a half dozen, including this one, a Platystoma ventricosa- actually two shells side by side, two and a quarter inch across.
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I recently came across this mosasaur tooth from the Ozan Formation for sale, and wondered if it would be possible to identify to a genus or species level. It measures around 1.5cm from the tip of the tooth to its base. It is my understanding that @pachy-pleuro-whatnot-odon is something of an expert on marine reptiles. What do you make of the tooth? Thanks in advance for any proposals Othniel
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Adventures in Balance. A Peace River fossil journal.
Balance replied to Balance's topic in Fossil Hunting Trips
@Shellseeker ”like drinking from a firehose” How do we eat a mastodon ? One bite at a time… 😉 If a mod would like to label this journal with a warning label I would not be offended. “Caution! Frequent brain dumps occuing in this area” The overload is part of the hyper focus aspect of my brain. Believe it or not I spent a good hour editing it down to fewer words 😂😂 I’m excited. It’s important to my brain that all aspects of the excitement be understood. As such it’s details on detail on detail. Most of which aren’t necessary. Throw in my poor grammar understanding and phrasing issues and I believe it’s confusing. Try being inside my head. 😊 Ill get you your specs ASAP. Jp -
I agree that the larger one isn't bone, but it does have some interesting mineral shapes in it. I can see why you're interested in it, particularly the darker banding. Maybe karst or schist? One of our members more knowledgeable in geology may be able to help more.
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Adventures in Balance. A Peace River fossil journal.
Shellseeker replied to Balance's topic in Fossil Hunting Trips
Not Alligator. That wide band of striated silica is what will identify this find. No alligator has that kind of banding within its teeth.. or any other mammal tooth I can think of... Mastodon would be closest, but not really ... Could it be a broken segment of a mouthplate from a Sting Ray or puffer fish? What else has mouth plates? http://www.elasmo.com/frameMe.html?file=batoids/manta/m_biro.html&menu=bin/menu_batoid-alt.html I got one of these also Jp, from my Pliocene site back in January: There are Camal/Llama there.. Sooner or later, someone (maybe us) will recognize this one....
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Looks to be a spinosaurini from the Dekkar Group in Talsint, Figuig Province, Morocco. definitely not a baryonchinae tooth and not from the Kem Kem.
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Jacksboro is possibly my favorite site I've ever been to- for its abundance, wonderful preservation, and biodiversity. Your collection there certainly reflects that. I especially love the rostroconch and the micro goniatites. Excellent stuff! Big congratulations and thanks for sharing them.
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Origin of "Equicalastrobus chinleana" strobili
Othniel C. Marsh replied to Othniel C. Marsh's topic in General Fossil Discussion
I didn't see that, my apologies. I shouldn't have skim read your answer. -
Definitely not bone.
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Thanks! I was thinking rock after I saw some similar ones noted as "cementitious material". The larger one I'm also not sure of but would be cool if it was a bone fragment!
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These are lovely images, as per usual, Sir Snolly! Thanks for sharing your artistry with us!
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It is a reference to a line in a Seinfield episode. I too am uncultured (though I know the cultural reference) as I was never got into the show. Perhaps, we are cultured--but in a different Petri dish than the rest of society? An old girlfriend in college knew a guy who was a stand-up comic. I remember we went to see his set when he opened for Seinfeld in a smaller club in Chicago. We left the club just as Seinfeld came on to go out to dinner with our friend. Priorities. Cheers. -Ken
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Adventures in Balance. A Peace River fossil journal.
digit replied to Balance's topic in Fossil Hunting Trips
Glad you finally found your peace. Technically, that bone on the plastron is known as an entoplastron. If I'm understanding you correctly the 'centrum' "with three sections" is possibly the left piece in the middle row on the right side of the photo above. The other pieces of the carapace surrounding it are neurals 1, 3 & 5--how odd! Your "centrum" is the anterior half of the nuchal bone (highlighted in magenta below). Agreed. That one caught my eye. They resemble the growth bands that Jack is so familiar with on cetacean teeth--but this is certainly the wrong shape for that. Rhino did cross my mind but it is unlike anything I've pulled from the Peace and so I can't hope to speak even marginally authoritatively. @Harry Pristis may be more familiar with this texture and may weigh in on this one. I too laughed at the candy cane enamel spiraling on the Rhynchotherium in the drawing. This is the genus we have at the Montbrook site and there is a slight curve to the enameled band on large tusks but I don't think it even makes one complete revolution around the tusk in even the big 8 foot tusk we have (that we are reassembling). Here is a link to the post I made a while back when we were discussing gomph enameled bands. https://www.thefossilforum.com/topic/112569-gomphothere-ivory-schreger-angle/?do=findComment&comment=1245124 Cheers. -Ken
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When I saw teeth like this one, I also thought at first, that they are not Spinosaurus, I thought that they were Sucho teeth. And I was really happy, seeing how cheap most of these teeths are. But then ive researched a bit, and I found out that Sucho is only known from Niger, not morocco. These teeth are most likely from the Dekkar formation, but without more informations, its hard to tell.
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The initial statement in your 1st post states that you assume this is spinosaurid and it has no ID label. It's a very large leap from assuming its spinosaurid without locality (possible) to guessing its Baryonyx or Suchomimus which have very specific localities and need those localities to justify identification (not possible). At the end of the day, without better pictures/size, this is simply a "tooth". Could be anything based on the currently available pictures. I do think with better pictures and size we can probably narrow it down a little bit though.
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Adventures in Balance. A Peace River fossil journal.
Shellseeker replied to Balance's topic in Fossil Hunting Trips
I love your posts , Jp but they are definitely "drinking from a Firehose"... and thus very intimidating. I have 6 or 8 of the topics that you raise that I really would like to get into, but I'll try to limit myself to only a few where I more likely add value.. The only thing the pattern reminds me of is Sting Ray mouthplate and it is not that... The most important photo is the last one... How 'thick" is that enamel.. It does not seem to be Mastodon or Mammoth.. I am wondering if it can be Rhino... It seems to be 32 x 10 mm but you can tell us exactly. That size of chunk would be off a LARGE mammal tooth.. @digit see lots of Large Mammal enamel. Possibly he will recognize something.. Also, I love that picture above has Rynchotherium enamel wrapping around the tusk... Ken has handled Rynchotherium tusks and I do not think that is the way it occurs.. more like a straight band along the underside.. -
I have hard time to consider it would be Baryonyx, teeth of them are hard to obtain, so loosing locality of that one would be bad for seller. Also need to remember that it can be crocodyliform for example. Spinosaurus is also known from Dekkar fm, which produces more dark colored fossils. You could guess locality from color, but its still just an guess. Many locations can look similar and color depends a lot from mineral consentration. It works better when it supports the given locality and should not be used as only information.
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Maybe it's a weathered, carved Aboriginal fertility statue.
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- beaumaris fossils
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I would think there would be diminished returns at some point. I'm also not sure I've seen a headlamp available quite that bright. I have a 1700 lumen Fenix headlamp that lights a back fence about 250ft away quite clearly and I estimate easily up to 400ft (in spotlight mode vs flood light mode) so I would think that would be more than enough. I would probably say to prioritize battery life per charge over lumens after that point.
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I would not hold my breath for guessing a location from the matrix color/texture. This is why provenance is SO important when collecting fossils. The fossil's scientific value significantly decreases with inaccurate or nonexistent location information.
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- spinosaurid
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Real Carcharodontosaurus jaw ?
FB003 replied to Brevicolis's topic in Is It Real? How to Recognize Fossil Fabrications
I have not a clue. Only thing I can say is something seems slightly off on the positioning of the tooth when compared to the shape of the holes near it but I don't know anywhere near enough about these jaws to make an educated opinion. Could just be a part of the jaw that curves. Example of the top piece of a jaw about a quarter way down this page. -
GM everyone, When searching for sharks teeth, it is often helpful to have a good head lamp, even in the day. The light reflects off the enamel. Obviously, good to have one for night/early morning digs as well. Being a beginner, I have taken our hiking headlamps when I dig. But they are weak. Prob. no more than 1500 lumens. ANyone have headlamp recommendations out there? I would think 50,000 lumens and above at least. What do others use? TB
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