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  • Stratigraphic Succession of Chesapecten

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  1. Hi all, Hwlp with id. please:-) The first photo shows what are Hystrivasum locklinii and horridum I believe. They are all from the APAC/Newburn Pit, Sarasota, Florida, collected by E. Dunlop on January 2, 1984. I think the next three scallops are all Chesapecten jeffersonius, but not 100% sure. They were all collected from Rice's Fossil Pit in Hampton, Virginia, in August 1964 by M. Fuldner. All shells are from the Miocene. I hope someone can help me. I never got a response the last time I posted a few years ago about sharks teeth:-( Thanks, Andrew
  2. Recently, two collectors who scuba dive for fossils throughout Florida and Georgia have recovered 5 chesapecten (including two paired valves) with morphological characteristics that signal a Miocene age. These characteristics include an acute byssal notch and a depressed byssal fasciole that is strongly differentiated from the shell’s auricle in terms of sculpture and elevation. The largest of the adult shells also displays an active ctenolium and one of the paired specimens displays significant gapes between valves when matched (the other pair was preserved as found by glue according to the collector and cannot be matched). Both of these aforementioned traits are also emblatic of Miocene age for Chesapecten. These shells were recovered from the following areas in Georgia and Florida: Savannah River, Effingham County, Georgia (Collector 1) Specimen 1 (W = 108.0 mm) R valve L valve R valve - close up of byssal notch and fasciole (most of fasciole has been degraded) R valve - close up of ornamentation L valve - close up of ornamentation Profile Close up of matrix, gray sand Savannah River, Effingham County, Georgia (Collector 1) Specimen 2 (W = 101.6 mm) R valve R valve - interior R valve - close up of byssal notch and fasciole L valve - note barnacles are modern species, not fossilized L valve - interior L valve - close up of ornamentation on auricle Side profile of pair, showing gapes Front profile of pair, showing gapes Cumberland Island, Camden County Georgia (Collector 2) Specimen 3 (W = 114.3 mm) R valve, note encrustation is recent not fossilized R valve interior, thick shell apparent Close up of byssal notch and fasciole Close up of ctenolium, although modern encrustation makes it difficult to see what is going on Close up of ornamentation St Mary’s River, Nassau County, Florida (Collector 2) Specimen 4 (W = 117.5 mm) R Valve R valve interior, active ctenolium and thick shell apparent Byssal notch and fasciole Close up of original sediment, note the olive and gray coloration Profile Suwanee River, Hamilton County, Florida (Collector 2) Specimen 5 (W = 69.9 mm) R valve, subadult specimen R valve interior, shell is thick for a subadult Of the Miocene strata from Coastal Georgia and NE Florida currently described in the literature, the Ebenezer Formation of Weems and Edwards (2001) of Upper Miocene Tortonian age appears to be the most suitable match for these chesapecten. The Ebenezer was originally defined by Huddleston (1988) as a member of the Coosawhatchie Formation (Middle Miocene). Weems and Edwards later elevated it to formational rank based on differences in lithological and dinoflagellate composition compared to the rest of the Coosawhatchie. The Ebenezer formation consists of gray to olive-gray, fine- to medium-grained micaceous sand and stretches from South Carolina to NE Florida. Five mappable members are apparent and separable by distinct unconformities. The lower four members correspond to dinoflagellate zone DN 8, while the uppermost member corresponds to DN 9. Revision of the Ebenezer to Formational Rank from Weems and Edwards (2001) According to the dinoflagellate zonation of de Verteuil and Norris (1996), DN 8-9 aligns with the Little Cove Point Member (DN 8) and the Windmill Point Member (DN 9) of the St Mary’s Formation of Maryland and Virginia. Alignment of the Ebenezer to St Mary's Formation of MD and VA from Weems, Self-Trail and Edwards (2004) Notably, no other Chesapecten in this age range outside of Maryland and Virginia has been reported in the literature. All specimens display similar characteristics which include an acute byssal notch, differentiated byssal fasciole, slightly inflated right valve, and a hinge size in adult specimens that is relatively small for adult chesapecten with the exception of Chesapecten covepointensis (DN 8 St Mary’s Formation) and in some cases Chesapecten santamaria (DN 9 St Mary’s Formation). However, it appears that these shells can be divided into two distinct variants although the preservation appears to be somewhat better outside the Savannah River region and may exaggerate these differences. Nevertheless, the Chesapecten collected outside of the Savannah River Region exhibit stronger, more raised ribs and have thicker, heavier shells compared to the specimens collected within the Savannah River region whose shells are thinner and ribs are lower and less pronounced. This is especially true of Specimen 1. It is possible that these variants originate from different members of the Ebenezer Formation. According to Weems and Edwards, “outside of the Savannah region, beds no older than dinoflagellate zone DN 9 occur”. This suggests that the shells collected outside of the Savannah River Region likely belong to Bed 5 of the Ebenezer Formation. Figure 3 of Weems and Edwards (2001) [shown below] suggests that someone scuba diving for fossils in the Savannah River is likely to collect in Bed 4. Therefore, it is possible that the Chesapecten specimens recovered from the Savannah River belong to Bed 4 of the Ebenezer Formation. This stratigraphic information aligns with the observed morphological differences among the specimens and tentatively supports the significance of these variations. Needless to say, more specimens are needed to confirm. Lateral Gradation of the Ebenezer from Georgia to Florida - Fig. 3 from Weems and Edwards (2001) Ward (1992) has remarked that the period between Chesapecten santamaria (DN 9) and Chesapecten middlesexensis (DN 10) represents a considerable loss of the fossil record in the stratigraphic succession of chesapecten. These Chesapecten, which bear a strong overall resemblance to Chesapecten middlesexensis while displaying traits of preceding species (smaller hinge, more differentiated byssal fasicole), could help bridge this apparent gap. Personal Remarks The equivalency of these shells to the St Mary’s Formation, not the Eastover formation is surprising to me given the strong resemblance to C. middlesexensis. If anyone knows of any findings correlating DN 8-9 to the Eastover, or of the Ebenezer to DN 10 please let me know. Also, if anyone has any additional samples of similar shells from similar sites, even in SC please let me know. Thank you! References de Verteuil, L., and Norris, G., 1996, Miocene dinoflagellate stratigraphy and systematics of Maryland and Virginia: Micropaleontology, vol. 42 (Supplement), 172 p. Huddlestun, P.F., 1988, A revision of the lithostratigraphic units of the coastal plain of Georgia; the Miocene through the Holocene: Georgia Geologic Survey Bulletin, no. 104, 162 p. Ward, L.W, 1992, Molluscan biostratigraphy of the Miocene, Middle Atlantic Coastal Plain of North America, VMNH Memoirs, no 2, 152p. Weems, R.E, Edwards, L.E., 2001, Geology of Oligocene, Miocene, and younger deposits in the Coastal Area of Georgia: U.S. Geological Survey, no 131, 129 p. Weems, R.E, Self-Trail J., Edwards, L.E., 2004, Supergroup stratigraphy of the Atlantic and Gulf Coastal Plains (Middle? Jurassic through Holocene, eastern North America): Southeastern Geology, volume 42, p 191-216
  3. Hello again everyone! After a quick trip out to Holden Beach with some minimal finds, I was left with some indecisiveness on the location my next fossil hunt, I was presented with the opportunity to go back to Surry County, Virginia to hunt the same locality as I did back in August. I was a bit unsure if I wanted to make the trip again, as I had a fairly rough time during the last trip with some stomach issues, and I had felt I had a decent enough haul from that time. However, after Tropical Storm Ophelia went through the area dumping a lot of rain and the forecast was predicted to be much cooler than August, I decided to make the return. I can say with certainty I am very, very glad I made this trip! I was also given the opportunity to stay on site this time as well, which was really cool, and I made a few new friends with the fellow hunters that were also staying there. This is once again very picture heavy so hang in there once again. A small note, I had previously though all of the fossils were from the Yorktown Formation, but I was corrected on this; the site is primarily Late Miocene Eastover formation, with a fair bit of Early Pliocene Yorktown Formation, with the cobbles from the Cambrian Swift Run Formation mixed in in places. Starting again with some pictures of the site, not much had changed in two months, aside from some of the cliffs collapsing partially, which unveiled some new, fragile bivalves. The sand they had put on the beach that covered some of the material had been washed out a little bit, so there were more fossils and Cambrian cobbles at the water line than previously. It was particularly rainy on Saturday morning, but as the day went on it warmed up to a comfortable temperature, and became sunny. It was very breezy this time around, so the waves were particularly rough the whole weekend, which helped expose more fossils on the beach. There was once again plenty of cool wildlife in the area as well! This unfortunate fellow was struck by a propeller and washed onto the shoreline late Saturday night. The damage was mostly on the side lying in the sand. This was the first time I've ever seen a sturgeon outside of an aquarium setting. I reported it to a researcher at VCU, who collected it the next morning. He told me it was a male, estimated to be 30 years old. It was around 1.676 meters (5.5 feet) long. I was able to hunt one particular spot in the area where the exposure was fairly close to ground level as well, here is one small look at that exposure. And as a brief glimpse into my finds, here was one such find in situ! (Courtesy of one of my fellow hunter friends I met during the trip) I don't have a particular order to show off this time around, but I'll start with my absolute favorite of my finds this trip: Ecphora! I was a little bummed out last trip that I was unable to locate one, but I lucked out big time this trip. The quality of them is all over the place, but I found a few that were especially good, including the one I had pictured in situ. The one in matrix was found accidentally when I was doing UV light hunting (Which I'll talk about in a bit). This was my favorite one! It's around 11.43 cm (4.5 inches) long, and 8.89 cm (3.5 inches) wide. A very small bit of the outer edge of the opening did break off while I was handling it after this picture was took, but fortunately I had some strong adhesive handy and was able to get most of it secured back in place. On to the UV light hunting, I spent a few hours after dark hunting for calcite and calcite-converted mollusks. I found quite a number of calcite clams, as well as some pretty good crystals as well. Two clams in particular had some fairly decent calcite crystals growing inside fractures between the two valves, which was really cool! These are two small clusters growing on some material. These were particularly luminous with the UV light, much like the crystal-covered clams. Here is a calcite-replaced Turritella on the right, and on the left is an odd-shaped chunk of calcite. It almost looks like the shape of an Ecphora shell's lower half, which makes me wonder if it could be a calcite cast of an Ecphora interior. Here are a few large coral chunks right after I has washed them off. (Septastrea marylandica?) A couple of scaphopod "tusk shells" (Dentalium attenuatum) with a lustrous, double-valve Pandora clam. Some fairly intact Turritella shells. (Turritella subvariabilis?) I found quite a few nice double-valve Chesapecten this trip. Some show up in the UV light at night, which helped me find them. However, some of the larger specimens had a lot of erosion or biological damage to them such as bore holes, so they would fall apart when I tried to clean them. I still ended up with a decent number of them, so it all worked out in the end. The leftmost specimen has a bit of calcite on the outer edge. Here is my largest Chesapecten next to my smallest once again (the large one is about 17.78 cm, or 7 inches, wide). Some large clam tubes I found. (Kuphus fistula?) A few gastropods of decent quality with a double-valve oyster and a Crucibulum limpet. (Crucibulum grande?) This Naticidae shell (Lunatia sp.?) is fairly large, probably my favorite gastropod aside from the Ecphora! Unfortunately, it's extremely fragile, so I refuse to move it until I get something set up for coating my specimens. Because of this I haven't measured it properly. There is a smaller specimen in the opening underneath. A half whale vertebra alongside some different rib fragments I found. One of the friends I made found a fairly sizeable, nice quality whale vertebra. I found this nice tympanic bulla with only a small bit of damage. Definitely better than the one I found in Green's Mill Run! I found this micro crab claw dactyl while cleaning a different specimen. Some areas had microfossils inside of larger specimens, depending on how the preservation was. I finally found shark teeth as well! The white mako is around 5.715 cm (2.25 inches) long, and if the marbled one had it's full root it would be even longer. I found the bottom four purely by accident while getting the coordinates of the deceased sturgeon early that morning. One visitor found a half Otodus megalodon or Otodus chubutensis tooth with beautiful serrations. I found a lot of Discinisca lugubris brachiopod shells this time around, particularly in the area where the calcite was common. Here is one with some calcite to the left of it. There were a lot more Skolithos to be collected this time! The first specimen was given to me by the man who put the whole hunt together, and the second one was one I found later. These particular specimens are nice because they are visible both as cross sections and from above / below, whereas usually it's just one or the other. I found a new type of scallop this trip as well, Placopecten! These are also extremely fragile, so they're currently on-hold and sitting in one spot until I can get some better preservation for them. This one I'm a little unsure on, I'm thinking a Cliona sponge but it might also be a bryozoan colony. It's on a fragment of Chesapecten with a lot of sponge bore holes. (I'll make a post with better pictures in Fossil I.D. later when I get time.) The last on my major finds, these are some intact clams, and they are a lot more durable than the last ones I found! I can handle these to a higher degree than the other ones I found without them falling apart on me. I still want to get some kind of preservation on them. Someone at the hunt recommended Krylon clear coat, I'll have to experiment with it on some other specimens. And as a bonus, these are not my finds, but one of my cabin neighbor's finds. This is an regular echinoid he found, as well as a plate he found containing a fragmented Mellita sand dollar. While I found the very small fragment attached to a Chesapecten, according to the man who set up this hunt he's never seen a sand dollar like that found in the locality, making it a first. That's all for now! Nothing new on the Triassic spots, but I'm closing in on one, and the other is looking promising for next January once hunting season has passed.
  4. Hello everyone! I had the opportunity over the last weekend to visit a spot in a campsite along the James River that had an outcropping of Pliocene Yorktown Formation fossils, as well as some "visitors" from the Cambrian Swift Run Formation of the Blue Ridge Mountains of Virginia. This was my first hunting trip that was outside of North Carolina, which was really exciting for me! While it was miserably hot and humid, and I had a stomach affliction for the duration of the trip, I made the best of it and found some really cool fossils, and met a lot of interesting folks. In all, over 70 people from various organizations were there. I have quite a few pictures to share, so hang in there with me! These are a few photos of the area on the river. The area we were in was brackish, and the camp beach there was recently worked on, which limited some of the fossils in the immediate entrance area. However, further down either side there were a lot more fossil piles. It was neat being able to look up and see all of the shells exposed on the cliffside. These huge chunks of material containing tons of Chesapecten scallops and other fossils were found in several areas. They were more plentiful before the beach replenishment from my understanding Fortunately there was not anything dangerous encountered over the weekend, but plenty of little critters were out and about. (Especially ants!) The hunt went from Friday evening to Sunday morning. On my way out on Sunday, I was given a lift back to my vehicle by a kind family from the Richmond Gem and Mineral Society, who were also nice enough to lead me to a well-known tulip poplar tree on the site. This massive tree is over 400 years old, and it takes about 8 fully grown adults hand-in-hand to fully encircle the base of the trunk. Now, on to the goodies I picked up. The majority of the fossils I picked up were varying sizes and species of Chesapecten scallops. I looked really hard for an intact echinoid or an Ecphora murex, but unfortunately I didn't get that lucky! As for the Chesapecten species names, and that of several other fossils as well, I am still in the process of learning them, so my detailed information will be lacking. I'll stick with my best finds, but this is a little group of mostly Chesapectens I had laid out while organizing my finds. Here are a few Chesapecten I had that had some variable colors, including my largest three specimens. They measure just over 15.25 cm (6 inches) wide. They have been brushed with water to show the color better. These are some random fossils I found including two coral fragments, several gastropods, some partial tube clams and some loose bivalves. This is the largest venus clam I found in the hunt, around 7.6 cm (3 inches) wide. These typically held together better than a lot of other aragonite-based shells. I found a few intact bivalves in a section of the cliff that had slid down to ground level, but most of them were so fragile due to their aging aragonite that they broke apart upon handling; some even had the physical consistency of the sand surrounding them! These are some ones I found that stayed intact to some degree, and one that had mostly broken away. While they're not the prettiest specimens, I realized they could be used as a cool visual example of how steinkerns form. I'll have to find a way to stablize them a little better so I can get them in a display box. While most of the bivalves were very brittle, some had undergone a mineral change and had their aragonite replaced with calcite. They give off a faint greenish-yellow glow in UV light, which made for a fun late night activity! One man even found a cluster of calcite crystals from the formation! Here are two intact calcite clams, and two loose calcite shells I found. This was a rather sizable Crucibulum limpet I found, also referred to as a "cup-and-saucer snail". It's a little over 3.3 cm (1.3 inches) at it's widest. This was the widest barnacle I found during the hunt, and it's over 5 cm (2 inches) wide. Here are a few barnacle clusters I found that had some nice pinkish coloration preserved on them. Here are a few intact oysters I found. The smaller one had quite the barnacle attached to it! Someone at the hunt suggested that this particular bone fragment was possibly avian. There were a lot of whale bone fragments around the site, and there have been some pretty sizable speciments found there, including whale vertebrae and whole dugong ribs. This ray tooth fragment was the only fish fossil I found myself during the whole hunt. One young woman found a 2 inch mako tooth, while another woman found a fairly sizable megalodon tooth. Jumping back to my Chesapecten, This is a medium specimen that had some very large barnacles on it (perhaps Balanus concavus?) They're probably the longest ones I found, measuring around 5 cm (2 inches). Here is a cluster of some very small Chesapecten. This is a fairly colorful specimen with some equally colorful barnacles attached to the exterior surface. Here is one of my largest specimens of Chesapecten (15.25 cm / 6 inches) next to my smallest specimen (1.525 cm / 0.060 inches). These are some pathological Chesapecten I found, although I'm not 100% sure about the third one, it might just be damage. Now on to my top favorites, this is a cluster of small to medium Chesapecten I found. There are some tusk shells on the interior side, and there is a Discinisca lugubris brachiopod on the right side exterior. This large Chesapecten has a calcite-replaced clam valve right on the rim of the shell. I had found this one on Friday and I didn't learn about the presence of the calcite replaced shells until Saturday, so it went unnoticed until I was washing it at home. I was too busy admiring the huge scallops everywhere! While I didn't find any intact echinoids there, I did find this oyster shell that has a small fragment of what appears to be from a regular echinoid on it, but I'm still not 100% sure. I also found this Chesapecten that appears to have a sand dollar fragment attached to it. Given the age and formation this might be a Mellita aclinensis fragment. A whale tooth fragment I found on Friday. A boy found a whole one there just before I arrived, and it was over 5 cm (2 inches) long. Now, we're down to my absolute favorite finds of the weekend. Here is a whole Chesapecten jeffersonius with both valves in fairly pristine condition. There is only a very minimal amount of hard buildup on the valves. I also found this specimen, but unfortunately it had a hole through one valve. Still really cool though! These are cobbles that contain Skolithos trace fossils from the Swift Run Formation, which is an Early Cambrian rock formation in the Blue Ridge Mountains of Virginia. They would break off during the upheaval of the mountains and eventually get carried in water currents all the way to where they were found in the current age. These are the oldest fossils I've found myself to date. And last but not least, here is a fairly pristine Chesapecten jeffersonius(?) valve I found with some good color. However, the most interesting part of this one is that there appears to be something in the resilifer of the shell, almost like shiny red nacre. This is the only one I picked up over the weekend with this feature. I wondered if it could be a preserved ligament, but I was a little unsure; I figured this would be the best place to possibly get some insight on it for the moment. The exterior was brushed with water to show color better. That's all for now! I've got a family trip to the southern NC coast planned soon, so I might try to swing by Holden Beach and nab another batch of Cretaceous fossils while it's still producing a lot. I'm also hoping I can find some local Triassic material before the holidays, I've got a few promising leads on some spots, including one right down the road. -Tony
  5. Thomas1982

    Chesapecten

    From the album: Miocene of Maryland

    Chesapecten Calvert Cliffs, Maryland
  6. dwsampson

    Chesapecten ID

    Is there a good rule of thumb, or simple method to distinguish between Chesapecten jeffersonius and C. madisonius?
  7. Isopedia

    Chesapecten?

    I found this fossil a few years ago along the Potomac River, I am thinking it is a Chesapecten sp.?
  8. So I've been looking around at the pile in the garage, trying to get rid of some of the junk and taking some photos that I thought you all might be interested in. I think some of you may have picked on my fascination with earbones...If you dont have that fascination keep scrolling....Well, here's one partial example with multiple views that was a little more different than most but I think its a whale bulla. Its preservation is a little different and there is an extra cavity where normally you would have solid bone...just my guess anyways. Also another shot of it on the very left showing some of the other bullas and its relative difference. Maybe its something completely different. Here's a neat little blob of casts of sponge borings and I've been trying to get a real sharp close up of what I think is a bryozoan in the same matrix but its the best I can do. The unknown is really cool but I just cant capture the real coolness with my cell phone..The scaley looking fragment is approximately 6mm long.The preservation detail is remarkable given its only a fragment. I suppose I really should put this in the ID section as I was wondering if these are all same Sconsia species. S. hodgii? Not that important...Didnt realize I had 4 of them until recently. A couple of them have taller spires and I just cant decide if they are all the same or not. Here's a Chesapecten. C madisonius I think. (photos of after and before) that I put in 2-3 hrs here and there trying to clean. Was using dental picks and a brass brush to remove the sandy matrix and endless soaking. I could do more I suppose but I dont have the patience for prepping. I had ideas of separating the valves but maybe in another lifetime. It has all kinds of very small sponge boring holes and grooves that make me absolute crazy. LOL. Was hoping to find that it had attached barnacles but they were gone and I only had scars left. Those of you who have that patience to prep I applaud you! Lastly for all you barnacle and brach fans...I know there are thousands of you..I am one..LOL. So a complete brach Discinisca lugrubris around here is pretty rare. I only have a few and this is the 2nd of 2 brach/barnacle associations I have. What makes this barnacle on top of a brach extra special special was that when I recently was looking for plates/stuff inside the barnacle (which had no plates and mostly just sand) I found another brach...a tiny juvenile! Yeah! So its time for breakfast...Continued hunting success! Regards, Chris
  9. Does anyone have a copy/working link to T.G. Gibson's Miocene and Pliocene Pectinidae from the Lee Creek Mine and Adjacent areas? It's paper from C.E Ray's 1987 Geology and Paleontology of the Lee Creek Mine, North Carolina. If so, would you so kindly share with me? According to Lyle Campbell's Pliocene Molluscs from the Yorktown and Chowan River Formations in Virginia, there's some good info and lots of pics of Chesapecten septenarius. Thanks!
  10. I am not sure if this counts as an official fossil hunting trip, since I just went to my regular beach down the road, but I figure that I am lucky to live near a location where I can find fossils I love. This has been a quiet holiday, so I spent a good part of Christmas Eve at Fort Clinch beach on Amelia Island, Florida, and found these 15 Chesapecten and a few shark's teeth., the nicest of which is a Carcharias taurus with very clear cusps. The grid in the picture is 1 inch / 2.54 cm. At 4"x4" (10 cm x 10 cm), the Chesapecten in the center is in the best condition of the larger ones I've found. I have still not worked out the exact species of these, nor do I know exactly where they come from, being coastal finds, but I am researching (and having a lot of fun doing so). I hope it is OK to post my finds laid out in this manner, and sorry about the duplicate image, I could not work out how to delete the dupe after I attached it. Thank you and Happy Holidays!
  11. Brondonh

    Chesapecten Bivalves SW FL

    I have recently expanded my fossil hunting to collecting and hunting different shells. Growing up in Florida I found it pretty easy to just overlook them and not take notice to how fascinating each one is. I recently found a nectar spot in Nokomis and one in Northport Florida that has quite a few different Scallop fossils. my issue is, I have been looking around on internet and on this page to identify them. There is so much information on this web site I can’t say enough how thankful I am for it. I have also found a study by the Florida Museum of Natural History about different species of Chesapectens found in SW Florida and in the Panhandle. I feel I’m finding conflicting information and would like to be certain upon what I have been finding. I live in Venice, FL and the areas I have been searching on are on the Tamiami Formation. All of these where found on new construction sites where they are digging a new lakes. i will attempt to put a link up of the study I am referring to. It was already posted in one of the threads I found on this pages, so some of you maybe familiar with it already.thanks in advace Brandon here is link to the report
  12. OK. I spent Sat on the James River collecting. It wasnt a great tooth trip, only found one sand shark. But its NICE. LOL I did, of course, find plenty of Chesapectens. Jeffersonius is my favorite, so I snagged a LOT of them. I also picked up a number of Madisonius. I think. Thats the first question. These ARE Madisonius, yes?
  13. bitterlily

    First Thought is Whale Rib Parts

    I guess my first thoughts are whale bones. I have found some vertebra and a phalanx down the creek last week. These were buried in the creek wall and I believe in the Yorktown Formation. They are very heavy and have a solid “ring” to them when they touch. They’re on an 8.5” x 11” sheet of paper for size reference!
  14. bitterlily

    Unopened Chesapecten Shell ID?

    We were in the creek today and found this Chesapecten Shell that is still closed. We’ve never found one of these with both sides, unopened. Can anyone ID the type of Chesapecten? Is it Madisonious? Thank You!
  15. FossilhuntLT

    Pearl?

    This is embedded in the interior of a Chesapecten shell, pearl or no? It is about 1.5 mm and the shell about 5 inch width. Hunter
  16. KristenN

    Never identified a fossil before!

    Hello, I am very new to this. I am a bio teacher with no experience in paleontology but I have to teach it! I recently found an intact top and bottom scallop shell off the James River, in Surry county, Virginia. I know it belongs to the Chesapecten genus, but not sure what species it is. Some friends have tried to help but I don’t understand what they are talking about. Possibly found in either the Yorktown formation or Eastover formation. Please help!
  17. rockfishmatt

    Matoaka Beach - 12-02-18

    Took a trip to Matoaka Beach for the first time today. Alot of bivalves, barnacles, couple pieces of coral, and one snail. Here's a pic! No sharks teeth but I will keep trying! IMG_1322.HEIC
  18. Fossil-Hound

    Chesapecten santamaria

    From the album: Calvert Cliffs

    Extremely rare C. santamaria gifted from an associate in Maryland.
  19. sixgill pete

    Chesapecten madisonius

    These pectens are very common in the Rushmere Member of the Yorktown Formation in cuts and bluffs along certain portions of the Tar River in North Carolina. Many are extremely worn and even crumble to pieces when handles. Specimens with double valves are not uncommon. This specimen is in exceptional shape. The final picture of the 3 specimens is to illustrate the growth of the species. They are all double valves, and range from 1 /4 inch long to 5 5/8 inch long.
  20. Fossil-Hound

    Chesapecten nefrens

    Discovered along the Choptank Formation near the surf as is.
  21. Miocene_Mason

    Chesapecten nefrens

    From the album: WhodamanHD's Fossil collection.

    Bought from online, was originally from tag sale and strangely enough was labeled "Cambrian".
  22. SailingAlongToo

    Chesapecten nefrens.top

    From the album: Recent Finds in VA

    Name: Chesapecten nefrens (both valves of specimen) Formation: Yorktown / Rushmere Member Age: Pliocene Location: James River, James City County, VA, left bank, downstream of Jamestown
  23. sixgill pete

    Chesapecten

    A small specimen of this species, but a nice one. They get quite a bit larger. I have one pushing 160 mm wide but it is in poor shape.
  24. SailingAlongToo

    Chesapecten nefrens.1

    From the album: Recent Finds in VA

    Name: Chesapecten nefrens (both valves of specimen) Formation: Yorktown / Rushmere Member Age: Pliocene Location: James River, James City County, VA, left bank, downstream of Jamestown
  25. SailingAlongToo

    Chesapecten nefrens.right

    From the album: Recent Finds in VA

    Name: Chesapecten nefrens Formation: Yorktown / Rushmere Member Age: Pliocene Location: James River, James City County, VA, left bank, downstream of Jamestown
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