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Discovery of the rare and exotic Buffalopterus pustulosus from the Late Silurian of Ontario Canada In the Summer of 2018, while digging for eurypterids in the Williamsville Formation at Ridgemount Quarries in Stevensville, Ontario Canada a most unusual carapace was uncovered. This fossil was identified as Buffalopterus pustulosus (Chelicerata, Eurypterida) in Figure 1. James Hall in 1859 first reported the occurrence of Eurypterus pustulosus from a single fragmentary fossil, however, the most important characteristics were clearly defined, that is the form of head, the position of the lateral eyes, and the fantastic yet extraordinary pustules covering the carapace. Pohlman in the late 1800’s inaccurately described a similar carapace believing it to be a different species. He then studied another fossil (Fig. 2) consisting of post-abdomen tergites (body segments) concluding again that it was not E. pustulosus but instead belonged to the same species as his carapace. Pohlman assigned this genus to the pterygotids. Clarke and Rudemann (1912) determined that indeed all the fossils were synonymous and that the species represented was P. buffaloensis = Buffalopterus pustulosus. Hence, B. pustulosus is known from only a few fragmentary fossils. It is unclear as to what the entire animal looked like as no complete specimens nor identifiable appendages belonging to the species have ever been found. The carapace discovered by me is remarkable not only for its size but flawless preservation. The length of the head is 12 cm (4.75 in.) with a width of 19.0 cm (7.5 in.). The length of the entire animal is estimated to have been as much as 1 meter. Unfortunately, no other parts of the exoskeleton were found. Incredibly, a second, smaller carapace was found by another person a few weeks later but again no other body parts were recovered. Parts of the specimens were donated to the Yale Peabody Museum. Moreover, the late, Sam Ciurca believes the discoveries may represent the first known occurrence of the eurypterid in the Canadian Williamsville. It is interesting to speculate the morphology of B. pustulosus if a complete animal were ever found. Were the swimming legs equipped with paddles so typical of the eurypterids? What were the chelicerae like? Were they small and aligned with the mouth or did they become very large formidable grasping organs similar to the pterygotids with their large cheliceral claws? What was the shape of the abdomen? Was it covered by pustules like the head? Were the pustules simply ornamentation or did they serve another function? How about the telson, was it thin and straight or was it curved? Paleontologists may never know the true answers to these questions of a most aberrant sea scorpion. References Clarke, J.M. and Rudemann, R. 1912. The Eurypterida of New York. New York State Museum Memoir 14, vol 1-2. Fig. 1. Buffalopterus pustulosus carapace from the Late Silurian, Stevensville, Ontario Canada discovered by me. Fig. 2. Post abdomen body segments of Pterygotus globicaudatus Pohlman from the Buffalo Natural Science Museum, Buffalo, NY
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From the album: Silurian
Eurypterus remipes Eurypterid (5 3/4 inches tall) Upper Silurian Fiddler's Green Formation Phelps Waterlime Bertie Group Lang's Quarry Ilion, N.Y. Repaired, cleaned, and trimmed by Al Lang- 1 comment
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From the album: Silurian
Eurypterus remipes Juvenile Eurypterids (Bottom specimen 3 inches long) Upper Silurian Fiddler's Green Formation Phelps Waterlime Bertie Group Lang's Quarry Ilion, N.Y. Repaired, cleaned, and trimmed by Al Lang- 1 comment
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Pair of Juvenile Eurypterids from Lang's Quarry
Jeffrey P posted a gallery image in Member Collections
From the album: Silurian
Eurypterus remipes Pair of Juvenile Eurypterids (Prosoma/abdomen/telson length- 2 3/4 inches) Upper Silurian Fiddler's Green Formation Phelps Waterlime Bertie Group Lang's Quarry Ilion, N.Y. Cleaned and trimmed by Al Lang-
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A new lower Devonian Eurypterid fauna in Pennsyvania
Dean Ruocco posted a topic in Fossil Hunting Trips
Hello All! For awhile I've known the Keyser Formation hosted eurypterids, and today was the day I encountered it! Me and 2 geologist gained access to an exposure on private property and were surveying it when I found a waterlime bed with overlying mudcracks, I would start my typical survey of the bed when I encountered a segment, and it just got better from there. Unlike other horizons I've collected all over this layer is not very dense, but consistently the bed was producing. After about 4 hours of intense digging I decided to call it quits for the day. 2 different and distinct eurypterid Species have been collected, one is some sort of Pterygotid likely the genus Acutiramus, and the other is the genus Erieopterus. The Erieopterus differs from the only other Devonian Eriopterus, Erieopterus microphthalmus in its head shape, with it being wider and the eyes being spread further. The best specimens collected were a plate with 2 heads on it and a Tergite from a pterygotid. Ill attach some pictures below. Top to Bottom: Erieopterus sp. Double head Erieopterus sp. (Note the legs on the left specimen) Pterygotid undet. close up of the scales, Pterygotid undet. Layer specimens were collected from.
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I cleaned a few Eurypterids from the hunt last weekend and photographed, go look at my previous post if you wanna read more but here’s the Eurypterids.
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From the album: Silurian
Eurypterus remipes (left) Abdomen and telson (right) Prosoma Late Silurian Fiddlers Green Formation Phelps Waterlime Bertie Group Lang's Quarry Illion, N.Y. A gift from Al Tahan-
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From the album: Silurian
Eurypterus remipes Prosoma and abdomen Late Silurian Fiddlers Green Formation Phelps Waterlime Bertie Group Leitchfield, New York An anonymous gift-
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First Eurypterids from the Mississippian of North America
Oxytropidoceras posted a topic in Fossil News
The open access paper is: Plotnick, R., & Lamsdell, J. (2022). Eurypterids from the Price Formation of Virginia: First Eurypterids from the Mississippian of North America. Journal of Paleontology, 1-5. doi:10.1017/jpa.2022.84 An unrelated paper: Vrazo, M.B., Trop, J.M. and Brett, C.E., 2014. A new eurypterid Lagerstätte from the upper Silurian of Pennsylvania. Palaios, 29(8), pp.431-448. Yorus, Paul H.-
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From the album: Eurypterid Collection
A huge Eurypterus remipes, found at Lang’s Quarry. This one is over 8 inches long! Also gifted to me by Dean!-
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Hello to all. 3 samples from my collection. Place of find - Ukraine, Khmelnytsky region; age - Silurian, Ludlow Series (425-427 Ma). All samples have retained positive and negative. 1. Slab with several sea-scorpions Eurypterus Tetragonophtalmus. I think a good preparation will open as many as 2 or 3 sea-scorpions.
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I had a good day collecting some good Pennsylvania eurypterid specimens with my buddy @A.C.. Here are some of our finds.
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Fossil trip Hudson Valley to locate Wurstboro NY Eurypterids
Stingray posted a topic in Fossil Hunting Trips
Ok so I’m trying to get a group together to locate a bedding plane that has produced Eurypterids in the past ( James Hall plates ). Many hours of searching and reading have given me the location of the area of discovery. I usually have no issues hunting alone for finds but do to the locals , which I have attached an image of below. I would prefer to have company on this visit for additional safety measures . I’m free most days so hunting days are open for me. Oh and there are two locals there look close on the left for the black one
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My first stop on this east coast trip was to upstate NY. We actually camped at the herkkimer diamond mind in the town of Herkimer, but the euripturid quarry was only about 20 minutes away. This is the only picture I have for now, all my other specimens are in boxes. The calvert cliffs were more fun and relaxing, but this was the most exciting. Once I go through all my boxes and do whatever prep is needed I will show more pictures.
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Hi all. I have this specimen i bought fra a dealer in western europe It's from the Lesmahagow in scotland. I bought it as a Slimonia, but was later advised on facebook that it's in fact a ceratiocaris. What do you guys here think? I'm pretty convinced it's a ceratiocaris. What confuses me is that the dealer is quite experienced and he collected it himself decades ago, and got it id'ed by the museum in Edinburgh
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July 23,2019 Its been so hot working outside all week that today's fossil hunt in 70 degree temps felt cool. It was quiet in the stream (besides the sound of wildlife) when I got there in the AM and stayed that way all day. I didnt want to disturb the scene with me pounding on rocks so I surface collected and covered a large area of the stream. Along the sides of the stream are glacial erratic boulders, stones, and gravel. The tabulate corals (Chonostegites clappi, Favosites winchelli, Favosites sp.) I pictured in this post were found among these glacial rocks. In one gully off the stream I noticed a large boulder of Waterlime. I have found parts of Eurypterids in these displaced Silurian rocks before. Today I found a partial Eurypterid on one of these boulders but had to leave it where I found it. Too big and way too far to haul back. Happy Collecting, Mikeymig
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Hello all! I'm looking for recommendations on good resources to help me identify a ton of material that I recently acquired from the Sojka eurypterid collection. I believe it is all from the Bertie Waterlime, but I can't be entirely sure. Some of the pieces have collection numbers, but I don't have access to the collection records. I am guessing that any of the collection records went with the rest of the collection to the Yale Peabody, but I can't imagine that I would honestly be able to match up the information without a lot of time and access. There's a lot of assorted material and lots of bits and pieces to ID. I figure that this will give me a good opportunity to learn a ton about a new subject! Thanks! - J
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I didnt know where to post this? Its not prepped. It was just found, but sadly, not by me. I just wanted to show this to folks. Too cool not too. If its in the wrong place, please move it. Thanks. My best buddy goes to England every year to metal detect. He met my other buddy, Al Lang, whilst on one of those trips and they became freinds. I was just sent these photos this morning. Really really cool. I only wish that I could prep something like this. Supposed to be 19 Eurypterids on it. Just Wow!!! RB
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From the album: Invertebrates and plants(& misc.)
Balteurypterus Tetragonophtalmus arthropoda-chelicerata Ukraine, Kamianets-Podilskyl silurian -
Good evening to all. Have a few interesting things, quite rare for Ukraine... I found it by myself. Sincerely yours
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Hello to everyone. I'm from Ukraine and here are some of my fossils. Description Ichthyosaur’s tooth (Platypterygius or Pervushovisaurus). Additional Information Continent: Europe Country: Ukraine Region: Donetsk region Era: Mesozoic Period: Cenomanian Age: 100.5 ± 0.4 million years
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Hi all, I am back with a few more questions. I've found some interesting fossils on the bedding planes of my Devonian cores and I need some help to have an idea of what they are or what they might be. There are overall 9 images as you will see in my replies. I would appreciate if you can help me to figure these out. Cheers Korhan
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Well I spent a wonderful day (perfect weather , not too hot not too cold and no rain) at the Eurypterid quarry today with two fellow collectors from the US and Quarryman Dave from the forum here. I was supposed to be hosting a member of the forum and his girl friend but unfortunately they had to cancel at the last minute. Too bad they might have had a very productive day based on how many eurypterids were found today.. One of the collectors from the US (he is a regular comes up about once a month) found a lovely 6 inch eurpterid with both paddles 1 walking leg and a balancing leg unfortunately the telson (bottom spine of tail) was missing. Non the less a great specimen. Note to self... he found it in a pit I abandoned a few weeks ago about 6 inches from where I was digging. He found it one layer below the layer I had been finding them in. Unfortunately, Quarryman Dave as hard as he tried just doesn't quite seem to have the knack for getting the eurypterids to bite for him. He actually split a lot of rock today............... Maybe he is using the wrong bait...... Not a total loss though he did get a very good geology lesson from a real expert and he found a partial head of a horseshoe crab. I have not found even a part of a horseshoe crab yet. (they are quite small only a a couple inches long at this location). While Dave was there I found this double plate that has a complete ventral view eurypterid at the top although the head is detached and positioned just above the body. The second eurypterid below the first one is a dorsal view and it is also missing the telson but on closer inspection the telson from it is up to the left of the top eurypterid (the one there anyway is the correct size for this one. The first one has its telson attached.. Dave is going to be ##### at me, I found two more complete after he left. He could only stay till about 1:30. The first one is about 7 inches long. I do not have a picture at this point it came out in about a dozen pieces and will require some intensive care. I will have the superglue out for sure tommorow. The 4rth one of the day is a real gem. Actually it is kind of amazing that I even saw it. It may turn out to be may favorite eurypterid that I have collected , haven't quite decided yet. For sure it is staying in my collection. It is the smallest eurypterid I have ever seen come out of the Williamsville "A" layer of the Bertie waterlime. Here are two pictures of the positive and negative with an american dime as a point of reference. This one is smaller than the tiny ones Pleecan and I sometimes find in the Fiddlers Green formation. All in all a very good day I would say (4 eurypterids) Mike and D. it was a real shame you could not make it. The offer to join me for a day of eurypterid collecting is open anytime you can reschedule. For that matter if anyone from the forum wants join me for a day just PM me. Just know there are days that we go home skunked. Just ask Quarryman Dave who has yet to find one in quite a number of visits or Pleecan.
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Fiddlers Green Formation of the Bertie Group Eurypterids Thank you to many of the members at the Niagara Peninsula Geological Society for helping me find and giving me several Eurypterid specimens from the Fiddlers Green Formation of the Bertie Group on July 6th, 2012. This was one of the first exciting fossil collecting trips I have been on, as most of my collecting just comes from the Kingston area or Prince Edward County. Here are several of th samples collected that day, most of them kindly given to me by NPGS members. I'll post the larger heads that I collected over at the Williamsville Formation of the Bertie Group sometime soon. Thank you NPGS Member, Corey Lablans More photos of the Eurypterid fossils check out: http://clfossilsandminerals.blogspot.ca/2012/07/eurypterids-by-corey-lablans.html
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