sander Posted April 2, 2020 Author Share Posted April 2, 2020 The next few days we will be spending in the Lower Campanian. Up first are two teeth from France. Squalicorax kaupi (both) Offaster pilula Zone Lower Campanian Beauval Quarry, Somme, France See you guys tomorrow, Sander 1 Link to comment Share on other sites More sharing options...
Notidanodon Posted April 2, 2020 Share Posted April 2, 2020 20 minutes ago, sander said: Well, Glacial movements mostly go from north to south, so I do not expect the chalk to go further to the north than were it was deposited. Also, according to geological maps there are no exposures in low lying fields, because the area to the north of east yorkshire yields older layers. Therefore the chalk that used to be on top of those layers (if that part was not land) is long gone. I really could not find any evidence of chalk fossils from (nowadays) North Yorkshire. I know but I’m saying maybe there was an outlying section of chalk somewhere in Yorkshire a few boulders or something from the time when chalk was present Link to comment Share on other sites More sharing options...
Notidanodon Posted April 2, 2020 Share Posted April 2, 2020 Nice teeth by the way Link to comment Share on other sites More sharing options...
sander Posted April 3, 2020 Author Share Posted April 3, 2020 19 hours ago, will stevenson said: I know but I’m saying maybe there was an outlying section of chalk somewhere in Yorkshire a few boulders or something from the time when chalk was present I honestly doubt it. Do you know of such blocks in North Yorkshire? 19 hours ago, will stevenson said: Nice teeth by the way And thank you very much! I have been trying to collect Squalicorax teeth from every location I could get for the past 11 years (still collecting them by the way), nice to see that I am not the only one who appreciates these teeth 1 Link to comment Share on other sites More sharing options...
sander Posted April 3, 2020 Author Share Posted April 3, 2020 Staying in the same layer for today, from another quarry. Squalicorax kaupi (134 times) Offaster pilula Zone Lower Campanian Hallencourt, Somme, France See you guys tomorrow, Sander 1 Link to comment Share on other sites More sharing options...
sander Posted April 4, 2020 Author Share Posted April 4, 2020 A new day, a new location. Squalicorax kaupi Misburg Formation Lower Campanian Höver, Niedersachsen, Germany See you guys tomorrow, Sander 1 Link to comment Share on other sites More sharing options...
sander Posted April 5, 2020 Author Share Posted April 5, 2020 I am not sure if I may post the exact location of today's tooth, so I will only mention the province. Squalicorax kaupi Belemnellocamax mammillatus Zone Lower Campanian Skåne län, Sweden See you guys tomorrow, Sander 2 Link to comment Share on other sites More sharing options...
Thecosmilia Trichitoma Posted April 5, 2020 Share Posted April 5, 2020 On 3/21/2020 at 9:27 AM, Tidgy's Dad said: What a fun idea. Are you thinking about doing a brachiopod advent calendar? 1 It is better to keep your mouth closed and let people think you are a fool than to open it and remove all doubt -Mark Twain Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted April 6, 2020 Share Posted April 6, 2020 1 hour ago, Thecosmilia Trichitoma said: Are you thinking about doing a brachiopod advent calendar? I'm saving that for a quiz when this is all over. Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
sander Posted April 6, 2020 Author Share Posted April 6, 2020 15 hours ago, Thecosmilia Trichitoma said: Are you thinking about doing a brachiopod advent calendar? Haha, actually I do not have many brachiopods. They are not one of my collection focuses. I do have quite a few Triassic ammonoids, and also my Triassic amphibian and Triassic, Jurassic and Cretaceous reptile collections are perhaps big enough for a similar thing. Link to comment Share on other sites More sharing options...
sander Posted April 6, 2020 Author Share Posted April 6, 2020 Today's tooth is one with a very special colour, unfortunately it is not complete, but it is still a very beautiful tooth (in my opinion). Again, I probably may not mention the location, so it is a bit vague again (and yes it is a different location as the one from yesterday). Squalicorax kaupi/lindstromi Belemnellocamax mammillatus Zone Lower Campanian Skåne län, Sweden See you guys tomorrow, Sander Link to comment Share on other sites More sharing options...
sander Posted April 7, 2020 Author Share Posted April 7, 2020 Another day in the Lower Campanian. Squalicorax yangaensis Woodbury Formation Lower Campanian Cooper River, Cherry Hill, Camden County, New Jersey, United States of America See you guys tomorrow, Sander Link to comment Share on other sites More sharing options...
sander Posted April 8, 2020 Author Share Posted April 8, 2020 Another day another tooth. Squalicorax kaupi unknown Formation Lower - Middle Campanian Cowikee Creek, Russell County, Alabama, United States of America See you guys tomorrow, Sander Link to comment Share on other sites More sharing options...
sander Posted April 9, 2020 Author Share Posted April 9, 2020 The dating of the tooth of today is ver unsure because it came from a river. Any more information on narrowing the age down would be helpful. Squalicorax pristodontus unknown Formation Lower Campanian - Upper Maastrichtian Green Mill Run, Pitt County, North Carolina, United States of America See you guys tomorrow, Sander 3 Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted April 9, 2020 Share Posted April 9, 2020 Very interesting. May I ask how many species do you have and how many species are recognized? Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
sander Posted April 11, 2020 Author Share Posted April 11, 2020 On 9-4-2020 at 6:44 PM, Tidgy's Dad said: Very interesting. May I ask how many species do you have and how many species are recognized? Well it depends on which author you believe, but according to the lsit on wikipedia in total there are now 23 species. Some of those are wastebucket taxa, while some have been given a separate name while that can be doubted. I have stuck to the somewhat older names until some clarity is brought to this matter. So I recognise in my own collection primaevus, falcatus, kaupi, pristodontus, yangaensis and bassani. On the benguerirensis, curvatus, lindstromi and volgensis specimens I am less confident. Perhaps I should dig into this genus more and do the ID'ing myself. But when you read that for instance falcatus is a wastebucket taxon and then the only other option is hartwelli, while apparently in the USA falcatus could be as much as 12 separate species, I will wait with relabeling them until these 12 separate species have been identified too. So I actually do not know how many different species I exactly have because of cases like the falcatus species. 3 Link to comment Share on other sites More sharing options...
sander Posted April 11, 2020 Author Share Posted April 11, 2020 I forgot to send a tooth yesterday, so here it is. It is from the Middle Campanian, which is a Campanian substage name that is not in use in Europe. In Europe there is only Lower and Upper Campanian. I could not find a precise correlation to see if the Lower Demopolis Formation would be Lower or Upper Campanian in Europe. Perhaps someone here can tell me which one it is? Squalicorax kaupi Lower Demopolis Formation Middle Campanian Frankstown, Prentiss County, Mississippi, United States of America See you in a few minutes, Sander 1 Link to comment Share on other sites More sharing options...
sander Posted April 11, 2020 Author Share Posted April 11, 2020 And I am back again with today's tooth. This time we are going back to France again. It was found in the European Upper Campanian, but I could correlate this tooth to the American Middle Campanian. Squalicorax kaupi C6 - C7 Upper Campanian (Middle Campanian in the Americas) Talmont sur Gironde, Charente Maritime, France See you guys tomorrow, Sander 2 Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted April 11, 2020 Share Posted April 11, 2020 1 hour ago, sander said: Well it depends on which author you believe, but according to the lsit on wikipedia in total there are now 23 species. Some of those are wastebucket taxa, while some have been given a separate name while that can be doubted. I have stuck to the somewhat older names until some clarity is brought to this matter. So I recognise in my own collection primaevus, falcatus, kaupi, pristodontus, yangaensis and bassani. On the benguerirensis, curvatus, lindstromi and volgensis specimens I am less confident. Perhaps I should dig into this genus more and do the ID'ing myself. But when you read that for instance falcatus is a wastebucket taxon and then the only other option is hartwelli, while apparently in the USA falcatus could be as much as 12 separate species, I will wait with relabeling them until these 12 separate species have been identified too. So I actually do not know how many different species I exactly have because of cases like the falcatus species. Thanks. I think. Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
sander Posted April 11, 2020 Author Share Posted April 11, 2020 3 minutes ago, Tidgy's Dad said: Thanks. I think. yes sorry for the vague answer, it is just a bit messy at the moment. Link to comment Share on other sites More sharing options...
sander Posted April 12, 2020 Author Share Posted April 12, 2020 A bit late, but still on time. Another French Squalicorax, a bit less old than the one of yesterday. Squalicorax pristodontus C8 Upper Campanian Meschers, Charente Maritime, France See you tomorrow, Sander 1 Link to comment Share on other sites More sharing options...
Praefectus Posted April 12, 2020 Share Posted April 12, 2020 On 4/11/2020 at 7:31 AM, sander said: Well it depends on which author you believe, but according to the lsit on wikipedia in total there are now 23 species. Some of those are wastebucket taxa, while some have been given a separate name while that can be doubted. I have stuck to the somewhat older names until some clarity is brought to this matter. So I recognise in my own collection primaevus, falcatus, kaupi, pristodontus, yangaensis and bassani. On the benguerirensis, curvatus, lindstromi and volgensis specimens I am less confident. Perhaps I should dig into this genus more and do the ID'ing myself. But when you read that for instance falcatus is a wastebucket taxon and then the only other option is hartwelli, while apparently in the USA falcatus could be as much as 12 separate species, I will wait with relabeling them until these 12 separate species have been identified too. So I actually do not know how many different species I exactly have because of cases like the falcatus species. I have been going through a "squalicorax phase" and might be able to contribute. There is a lot of conflicting information that has been published. I would like to see what other TFF members think. Squalicorax primaevus is a middle to late Albian species that had a smooth (unserrated) crown. S. primaevus from Smart 2007. Squalicorax volgensis is nomen dubium. Silverson et al. 2007 used teeth from the upper Albian of Texas to divide it into two new species, Squalicorax pawpawensis and Squalicorax priscoserratus. Squalicorax baharijensis is a Cenomanian species reported from New Mexico and Texas. From left to right: S. pawpawensis, S. priscoserratus, S. baharijensis (From Silverson et al. 2007). Squalicorax falcatus is a mid Cenomanian to early Campanian paleobucket. S. curvatus may be synonymous with S. falcatus. Elasmo.com states that S. curvatus teeth should be classified as either S. baharijensis or S. falcatus. S. hartwelli is a variant of S. falcatus found in the Niobrara Chalk. It may represent a different species, but it also may be a case of sexual dimorphism, different jaw position, etc. S. kapui is a Santonian to Maastrichtian paleobucket. In my opinion, S. lindstormi and S. praeyangaensis are dubious variants of S. kapui from Mississippi and Kazakstan, respectively. S. pristodontus is a large Maastrichtian species. Kansas Squalicorax from Oceans of Kansas S. yangaensis is a Santonian-Campanian species from southeastern USA. It resembles S. bassani and is sometimes labelled as such. S. bassani is a Maastrichtian species from Morocco. Squalicorax bassani Thank you @sander for putting up this topic. I've enjoyed seeing the rare teeth from your collection. Further reading: ELASMO squalicorax Oceans of Kansas 1 Link to comment Share on other sites More sharing options...
sander Posted April 13, 2020 Author Share Posted April 13, 2020 16 hours ago, Praefectus said: I have been going through a "squalicorax phase" and might be able to contribute. There is a lot of conflicting information that has been published. I would like to see what other TFF members think. Squalicorax primaevus is a middle to late Albian species that had a smooth (unserrated) crown. Squalicorax volgensis is nomen dubium. Silverson et al. 2007 used teeth from the upper Albian of Texas to divide it into two new species, Squalicorax pawpawensis and Squalicorax priscoserratus. Squalicorax baharijensis is a Cenomanian species reported from New Mexico and Texas. Squalicorax falcatus is a mid Cenomanian to early Campanian paleobucket. S. curvatus may be synonymous with S. falcatus. Elasmo.com states that S. curvatus teeth should be classified as either S. baharijensis or S. falcatus. S. hartwelli is a variant of S. falcatus found in the Niobrara Chalk. It may represent a different species, but it also may be a case of sexual dimorphism, different jaw position, etc. S. kapui is a Santonian to Maastrichtian paleobucket. In my opinion, S. lindstormi and S. praeyangaensis are dubious variants of S. kapui from Mississippi and Kazakstan, respectively. S. pristodontus is a large Maastrichtian species. S. yangaensis is a Santonian-Campanian species from southeastern USA. It resembles S. bassani and is sometimes labelled as such. S. bassani is a Maastrichtian species from Morocco. Thank you @sander for putting up this topic. I've enjoyed seeing the rare teeth from your collection. Further reading: ELASMO squalicorax Oceans of Kansas Hi Praefectus, That is indeed how I understand the genuses to be as well, perhaps the timeframes and distributions are not exactly as described above (for example yangaensis was described from specimens from lake Yanga in Congo so it can be found in Africa as well) but those are most of the genuses indeed. It would be nice if someone would really focus on the Anacoracidae and sort them out for once and for all (or at least a few decennia). most of the times a new article is published, only 1 or a few new species are added, or there are a few specimens of anacoracidae described for a certain location along with the other fauna of that location. but an all encompassing study on Squalicorax seems to be too complicated? 1 Link to comment Share on other sites More sharing options...
sander Posted April 13, 2020 Author Share Posted April 13, 2020 Among the teeth of today the smallest Squalicorax in my collection can be seen. it is less than 5mm big. I guess it must be a juvenile tooth, which I do not see often. Of course you have to have a good eye to even find it. Squalicorax kaupi (x3) Unknown Formation Upper Campanian Florence County, South Carolina, United States of America See you guys tomorrow, Sander 2 Link to comment Share on other sites More sharing options...
sander Posted April 14, 2020 Author Share Posted April 14, 2020 Today's tooth is from a location that is known by me by only two letters, any help on the actual name would be appreciated. Squalicorax pristodontus Unknown Formation Upper Campanian - Upper Maastrichtian A. R., Monmouth County, New Jersey, United States of America See you tomorrow, Sander Link to comment Share on other sites More sharing options...
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