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Went to my private pit today for about an hour to gather some micro material. While there I walked around just a bit picking up 30 or so loose teeth. Some Striatolamia, Galeocerdo, Anomotodon, Abdouinia among others. Also 2 Hexanchus and this realy nice little Otodus auriculatus.
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M. praecursor is a relatively common find in vertebrate lenses of the Castle Hayne Formation. Leriche (1905) believing the species to be an Eocene version of the much younger Oxyrhina desori (Isurus desori) erected Oxyrhina desori praecursor. Leriche (1942) erected Oxyrhina praecursor americana for teeth with slightly different root and blade characteristics. These were placed into Isurus (White, 1931) and eventually a new genus, Macrorhizodus by Glickman (1964). Both praecursor and americana were accepted as distinct species (White 1956, Ward & West 1990, Zhelezko & Kozlov 1999 and Case & Borodin 2000a). Ebersole, Cicimurri & Stringer 2019 determined through studies of the extant Isurus oxyrhynchus that these different characteristics are attributable to heterodonty and placed americana as a junior synonym of praecursor. References: Ebersole, Cicimurri & Stringer, 2019. Taxonomy and biostratigraphy of the elasmobranchs and bony fishes (Chondrichtyes and Osteichthyes) of the lower to middle Eocene (Ypresian to Bartonian) Clairborne Group in Alabama, USA, including an analysis of otoliths. pgs 56-58 as Isurus praecursor Chandler, Richard 2015. Fossil Fish, Volume 3 of 4. North Carolina Fossil Club. pgs 67-68 Case and Borodin, 2000. A Middle Eocene Selachian Fauna from the Castle Hayne Limestone Formation of Duplin County, North Carolina. Plate 3 fig. 21-26
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From the album: My Echinoid Collection
Periarchus sp. Castle Hayne Formation Late Eocene (41-33 Ma) Holden Beach, Brunswick County, North Carolina, USA Self collected in September 2023 A highly unexpected but exciting find, I came across this chunk of Castle Hayne material while searching the beach for Cretaceous Hardouinia mortonis specimens. The tide and surf was particularly strong due to an offshore tropical cyclone, which made it difficult to find the Cretaceous echinoids, but was bringing in large stones and other things. As best as I can recall, this is the first Castle Hayne formation material I've seen on Holden Beach. The chunk is fairly hefty, and is at least 30.5 cm (12 inches) long. There are a number of Periarchus fragments in the material, and there is one other visible specimen that is only missing about ten percent of the test. I am unsure of the species due to the periproct being obscured. I have little doubt that there are probably more specimens in the center of the material. The chunk also has numerous bryzoan fossils.-
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From the album: My Echinoid Collection
Echinolampas appendiculata Castle Hayne Formation Priabonian Age, Late Eocene (37-33 Ma) Castle Hayne, New Hanover County, North Carolina, USA Acquired from online, July 2023 There are trace particles of phosphate in the interambulacral zones, highlighting the plate patterns. It shows up especially well under UV light.-
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My Eocene Pit Does It Again; Archeocete Whale Tooth.
sixgill pete posted a topic in Fossil Hunting Trips
This past Wednesday I decided to take a ride over to my Eocene pit. I have not been over there much lately but as I have shown in the past it has produced some amazing fossils. Well, it did it once again!! Eocene Castle Hayne Formation Comfort Member 43.4 mm (1.71 inch) wide at the base of the tooth. 36.4 mm (1.43 inch) on one slant and 35.4 mm (1.39 inch) on the other slant. This is measuring just tooth. No root. After conversing with @Boesse he says it is probably best to identify it as a milk tooth of a small basilosaurid. An upper P3 or P4. Quite exciting!!- 34 replies
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In 2019, @Plax and I explored some exposures of the Castle Hayne Formation near Wilmington, NC. At one site I found a peculiar fossil coral. I am familiar with the typical Eocene solitary corals such as Flabellum and Endopachys, however this one has me stumped as I cannot identify it to Genus with any of my SE USA Eocene references. I am hoping one of the NC invert collectors out there might recognize it. Size is ~32mm. Thanks Mike
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I haven’t been active on here in years and caught the hunting bug again after moving back to NC. I used to hunt the Castle Hayne and Belgrade Quarry in NC when they had it open to hunters. Does anyone know if they still allow hunters or are the quarries in NC closed now?
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Hi all, does anyone know anything about these echinoids? All are approximately 4-6cm in diameter. They came up with the sediments dredged at Holden beach. My best guess is they’re Eocene Castle Hayne since that formation is out towards the coast and is well known for its echinoids. Also, what’s the best way to clean these guys up? They’re in a lithified sand but with enough force you can sort of break some chunks of it off, so it’s not super resilient like some limestones. edit: I believe they’re Hardouinia spp., that’s what they look like online. Someone said they might be PeeDee, although I’ve not heard of lots of echinoids coming from the PeeDee, although some can, and they didn’t really say how they knew it was PeeDee vs Castle Hayne. Also I found a fish skull cap, it’s not sea robin, anyone possibly know what type of fish it’s from?
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Well folks all of us in the househave been sitting around a day and a half after testing positive for this corona stuff. We all are fully vaccinated, booster included and are showing none to severely mild symptoms. Myself, I am showing no symptoms at all othe than mild head / body aches. But, we are all ok. Anyways, I had to get out for a bit so I drove the couple of miles to my private little Eocene quarry. Other than the normal assortment of teeth, sawfish verts and rostral teeth I found this heartbreaker of a ric. Other than the broken root it is a gorgeous tooth. It measured 3.10 inches on my caliper. I sifted the dirt all around it hoping to find the broken root piece. But, oh well still a beautiful tooth. Definately beat sitting around!
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I am hoping to get help identifying some invertebrates that I found in the Eocene Castle Hayne Limestone. Most are bivalve internal molds. I have seen the first colloquially called a sponge, but I am not sure that identification is correct. The only reference with plates I could find online for the Castle Hayne was Kellum's Professional Paper 143 from 1926, but it is dated and most descriptions only included a genus. If you know of another reference that is better, please let me know. Any help is greatly appreciated. Thank you so much! #1 #2 #3 #4 #5 #6 #7
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Here are some pics of a tooth I found. I originally thought it might be a eocene sea cow tusk piece. I sent some pics to @Boesse and he believed it to be a ta first premolar of an archeocete whale. So wow! The same day I found the last Hexanchus I also found this fragment of an archeocete tooth. This pit has been amazing!! Also here is a very cool stingray barb. It is the part where it attaches to the body of the ray.
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Another Amazing Hexanchus agassizi from the North Carolina Eocene
sixgill pete posted a topic in Fossil Hunting Trips
Well my little Eocene Castle Hayne Formation pit has coughed up another amazing Hexanchus agassizi tooth. That is 3 very nice rooted ones in about 4 months. Here it is. I also found this really nice Macrorhyzodus americana the same day Here is a sampling of other teeth and such from there. These are not from the same day, I have not cleaned the rest of the finds from that day yet.- 7 replies
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OK folks, from my new found Eocene pit. Castle Hayne Formation, Comfort Member. Some sawfish, Pristis lathami verts and rostral spines. And a possible piece of dorsal spine. Verts, including one huge one measuring in at 1.48 inch or 37.6 MM. more verts and rostral spines; the possible piece of dorsal spine is under the row of 4 verts across the top the longest spine measures in at 3.20 inch or 81.4 mm Seen this guy still in full velvet on my way to the pit one day.
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New Eocene Castle Hayne Exposure; Vertebrates Galore
sixgill pete posted a topic in Fossil Hunting Trips
Hi everyone. It has been a while since I have made a post. Between some health issues and all the RAIN we have had here in NC this summer, the trips have been few. Not to mention all of the quarries still being closed due to covid. Recently I was granted permission to search a small, private agricultural limestone marl quarry. It is Eocene Castle Hayne Formation, Comfort Member. Now before anyone asks, no I will not say where or nor will I be bringing anyone to it. It is very small and my permission is very tentative. I have to get permission each time I go. It is a smorgasbord of Shark teeth and verts, sawfish rostral teeth and verts, fish parts. Other than broken pieces of Periarchus sp., a few crab claws and a few startfish ossicles it is rather void of invertebrate fossils. The marl is friable limestone. Here are a few of the teeth found so far, some of the rare Castle Hayne teeth. I will add more pics as we go along of other items found, including some nice C. auriculatusand some huge sawfish rostral teeth and verts. Heterodontus cf elongatus Hexanchus agassizi Heterodontus cf elongatus Nebrius obliquues- 21 replies
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I need some help with some I.D.'s. These were both found in some matrix I collected recently in Craven County N.C. The exposure is Eocene Castle Hayne Formation, ?Comfort member. The site produces a few shark and fish teeth, crab claws, echinoids and starfish ossicles. It is a limestone / bryozoan hash. It is possible of course that this stuff is recent or even possibly Pleistocene as I have found pieces of mastodon teeth very close by. First is a small mammal tooth, 4mm long by 2.2 mm wide. Next is a small jaw piece with teeth. I first thought fish, then was thinking lizard. But I really have no idea. The entire section is 10.6 mm long. the teeth are very very small.
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Hey All, I found this tooth in some micro material from a creek in Castle Hayne NC. Was wondering if it was fossilized or not. Other material found were really worn small sharks teeth from the Eocene Castle Hayne Formation. Thanks.
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Found this little guy in some Castle Hayne formation micro-matrix from Eastern North Carolina. I've tentatively ID'd it as Daysatis sp. Please, confirm, correct or if possible ID to species? Also, In the 3rd and 4th pix, do you think the circular "structure" on the surface is diagnostic, pathologic, damage or ?? Scale is 1mm. (And, please excuse my ugly green clay!) Thanks.
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A couple of recent finds from Easten North Carolina, Castle Hayne Formation. Scale divisions on all pix are 1 mm. The first specimen is brachiopod, I have it ID'd as Eucalathis sp. Can one of our experts confirm or correct? Second specimen(s) I really have no idea, other than possibly bryozoan, but I can't see any surface apertures. The first pic is of two nearly identical specimens and the remaining pix are of just one. The specimens are not domed, the top surface is a pebble-like texture and the opposite side is a sandy texture. The dark "object' in the center is actually a hole that goes completely through. (Last pic is a profile of it mounted in a pc of putty - sorry for the poor quality picture(s)!) What do you folks think?
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Hello All, I was picking through some micro material from SE North Carolina, its a mix of Maastrichtian (Peedee Form.) and Eocene ( Castle Hayne Form.). I found what looks like a tiny ( 7mm long) jaw bone with teeth. If it is a jaw bone , is it a tiny reptile or a bony fish ? Or perhaps it is neither but something else. Thanks for your help.
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This was found in North Carolina, Castle Hayne section 3/4 strata. A fellow club member ventured it was a calamites, I was told those were extinct by the eocene so maybe an equisetum? What is it? The collage is stages of simple prep.
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Collected at the Martin Marietta Castle Hayne Quarry. This is a very common find, though most are limestone or marl encrusted or broken. P. lyelli is found in Zullo & Harris, 1987 sequence 4 of the Castle Hayne (Kier, 1980 middle to late biozone). A very similar species; Periarchus sp. is found in Sequence 3. P. lyelli is most easily identified and differentiated from Protoscutella and Periarchus sp. by the placement of the periproct. The periproct is located slightly above the central point between the peristome and the posterior margin of the test.
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Rhyncholampas carolinensis are not an uncommon find in the Castle Hayne Formation of North Carolina. However, they are often badly worn, broken or heavily encrusted with limestone. This little beauty is about average size and very clean. It also has a bonus "hitchhiker" a Polychaete worm. This worm is often referred to as Polychaete species 00. Referencers: Kier, P.M. (1980) The Echinoids of the Middle Eocene Warely Hill Formation, Santee Limestone and Castle Hayne Limestone of North and South Carolina. Smithsonian Contributions to Paleobiology: Number 39. Pg. 33-34 plates 9 figures 9-12 and 10 figures 1-4
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A nice small slit shell internal mold.
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This nice small carapace is one of the more common crabs from the Castle Hayne. This one has much of the original shell intact making it very special.
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