Microraptorfan Posted January 21, 2021 Share Posted January 21, 2021 Hi I visited the Yorkshire coast and found several different ammonites, doe anyone here have an ID for them? Link to comment Share on other sites More sharing options...
Microraptorfan Posted January 21, 2021 Author Share Posted January 21, 2021 Link to comment Share on other sites More sharing options...
Microraptorfan Posted January 21, 2021 Author Share Posted January 21, 2021 I thought this might be some species of Dactyiloceras? Link to comment Share on other sites More sharing options...
TqB Posted January 21, 2021 Share Posted January 21, 2021 Possibly, but it depends on location. There are some Callovian ammonites from south of the main Lias exposures that are very similar. Tarquin Link to comment Share on other sites More sharing options...
herve Posted January 21, 2021 Share Posted January 21, 2021 Hello,its a alligaticeras alligatum callovien stage,best regards 1 J collecting only fossils since 30 years old,ammonites,heteromorphe ammonite,crabs,fish trilobit, sea urshins, mammals, etc...J am married . Sorry for my enghish Link to comment Share on other sites More sharing options...
TqB Posted January 21, 2021 Share Posted January 21, 2021 14 minutes ago, herve said: Hello,its a alligaticeras alligatum callovien stage,best regards That's a good bet. Do we need a venter shot and horizon to be sure? Tarquin Link to comment Share on other sites More sharing options...
Microraptorfan Posted January 21, 2021 Author Share Posted January 21, 2021 It was from either Port Mulgrave or Runswick Bay I forget which though Link to comment Share on other sites More sharing options...
Microraptorfan Posted January 21, 2021 Author Share Posted January 21, 2021 These are some other ammonites I found Dactylioceras? found at Runswick/Kettleness Link to comment Share on other sites More sharing options...
Microraptorfan Posted January 21, 2021 Author Share Posted January 21, 2021 I think its a hildoceras but unsure on species, was found at Port Mulgrave Link to comment Share on other sites More sharing options...
Microraptorfan Posted January 21, 2021 Author Share Posted January 21, 2021 Link to comment Share on other sites More sharing options...
Microraptorfan Posted January 21, 2021 Author Share Posted January 21, 2021 Found at Port Mulgrave, unsure on species Link to comment Share on other sites More sharing options...
Microraptorfan Posted January 21, 2021 Author Share Posted January 21, 2021 Link to comment Share on other sites More sharing options...
Microraptorfan Posted January 21, 2021 Author Share Posted January 21, 2021 This one is from Runswick Bay Link to comment Share on other sites More sharing options...
Microraptorfan Posted January 21, 2021 Author Share Posted January 21, 2021 Link to comment Share on other sites More sharing options...
Microraptorfan Posted January 21, 2021 Author Share Posted January 21, 2021 Closer up shot of the ribbing Link to comment Share on other sites More sharing options...
BentonlWalters Posted January 21, 2021 Share Posted January 21, 2021 Nice finds! Personally I disagree with the first one being Alligaticeras, in pictures I've seen of them the living chamber is much larger compared with the rest of the ammonite that in this example. Furthermore, both Mulgrave and Runswick are Toarcian and Pliensbachian rather than Callovian, almost certainly from the Whitby Mudstone Formation. Alligaticeras is known further south than this around Scarborough. I think it is closer to Dactylioceras ?commune which are common at these sites. The second specimen is more confidently D. commune, the third is Hildoceras possibly bifrons, The fourth with the spines is Peronoceras but I'm unsure of the species and the last I think is Cleviceras (also called Eleganticercas). For Yorkshire ammonites the blog Andysfossils (https://andysfossils.com/) is a fantastic resource for identification with clear pictures. Hopefully this helps Benton 1 Link to comment Share on other sites More sharing options...
TqB Posted January 21, 2021 Share Posted January 21, 2021 31 minutes ago, BentonlWalters said: Nice finds! Personally I disagree with the first one being Alligaticeras, in pictures I've seen of them the living chamber is much larger compared with the rest of the ammonite that in this example. Furthermore, both Mulgrave and Runswick are Toarcian and Pliensbachian rather than Callovian, almost certainly from the Whitby Mudstone Formation. Alligaticeras is known further south than this around Scarborough. I think it is closer to Dactylioceras ?commune which are common at these sites. The second specimen is more confidently D. commune, the third is Hildoceras possibly bifrons, The fourth with the spines is Peronoceras but I'm unsure of the species and the last I think is Cleviceras (also called Eleganticercas). For Yorkshire ammonites the blog Andysfossils (https://andysfossils.com/) is a fantastic resource for identification with clear pictures. Hopefully this helps Benton Yes, Port Mulgrave or Runswick Bay rules out Callovian. Locality is so important! Tarquin Link to comment Share on other sites More sharing options...
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