Jeffrey P Posted November 16, 2017 Share Posted November 16, 2017 Monday I was in Schoharie County up on the Helderberg Plateau southwest of Albany, NY. In a roadside exposure of the Manlius Formation I picked up several pieces of rock with numerous Tentaculites specimens. There were also small brachiopods and ostracods. The Manlius Formation either represents the bottom of the Helderberg Group- the lowest of the Lower Devonian or the highest formation in the Silurian in New York. Tentaculites were originally thought to be related to mollusks or worms, but now are considered more closely related to brachiopods and bryozoans. 1 Link to comment Share on other sites More sharing options...
doushantuo Posted November 16, 2017 Share Posted November 16, 2017 posting this once more Good plate Jeff.Any indications of current orientation of the shells? 1 Link to comment Share on other sites More sharing options...
doushantuo Posted November 16, 2017 Share Posted November 16, 2017 from Sauerland(1983): 1 Link to comment Share on other sites More sharing options...
Kane Posted November 16, 2017 Share Posted November 16, 2017 Tentaculites remain as a kind of conundrum. Neat pieces, Jeffrey! I only know my Devonian tentacritters so all I can provide is my applause. ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
doushantuo Posted November 16, 2017 Share Posted November 16, 2017 Gessa(1998),decided to post this because the early ontogeny of Nowakia is nicely shown 2 Link to comment Share on other sites More sharing options...
Shamalama Posted November 16, 2017 Share Posted November 16, 2017 @Jeffrey P, Nice finds from the Keyser... er... Manlius formation. I sure do love a plate full of Tentaculids. @doushantuo, Thanks for the info. I do not think I have ever seen a rounded tip on any Tentaculite that I have found but now I will have to examine some under the 'scope. -Dave __________________________________________________ Geologists on the whole are inconsistent drivers. When a roadcut presents itself, they tend to lurch and weave. To them, the roadcut is a portal, a fragment of a regional story, a proscenium arch that leads their imaginations into the earth and through the surrounding terrain. - John McPheeIf I'm going to drive safely, I can't do geology. - John McPheeCheck out my Blog for more fossils I've found: http://viewsofthemahantango.blogspot.com/ Link to comment Share on other sites More sharing options...
Fossildude19 Posted November 16, 2017 Share Posted November 16, 2017 Great plates, Jeff! Congratulations. Tentaculites are quite cool, in my opinion. Regards, Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
Ludwigia Posted November 16, 2017 Share Posted November 16, 2017 Nice plates, Jeff! Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Arizona Chris Posted November 16, 2017 Share Posted November 16, 2017 REAL tentaculites - totally killer find. And a whole slab of them? Very impressive. ---------------------------------------------------------------------------------------------------------------------------- Arizona Chris Paleo Web Site: http://schursastrophotography.com/fossiladventures.html Link to comment Share on other sites More sharing options...
Pagurus Posted November 17, 2017 Share Posted November 17, 2017 That's a real fine mess of tentaculites you found there, Jeff. Nice. Start the day with a smile and get it over with. Link to comment Share on other sites More sharing options...
doushantuo Posted November 17, 2017 Share Posted November 17, 2017 BTW,just curious:no specimen with an operculum? BTW:both Blind and Lardeux found evidence for a sipho-like structure in internal moulds: 1 Link to comment Share on other sites More sharing options...
GordonC Posted November 18, 2017 Share Posted November 18, 2017 Thanks , Jeff, very informative post and follow through. the Manlius was deposited in a lagoon environment at and slightly below and above mean sea level. Leo Laporte authored definitive papers on the subject. http://paleo.cortland.edu/class/strat/files/Laporte_1967.pdf Gordon 1 Link to comment Share on other sites More sharing options...
Jeffrey P Posted November 21, 2017 Author Share Posted November 21, 2017 On 11/16/2017 at 12:02 AM, doushantuo said: from Sauerland(1983): Thanks for all of the useful information about Tentaculites. On 11/16/2017 at 12:02 AM, Kane said: Tentaculites remain as a kind of conundrum. Neat pieces, Jeffrey! I only know my Devonian tentacritters so all I can provide is my applause. Thanks for the support Kane. On 11/16/2017 at 7:17 AM, Shamalama said: @Jeffrey P, Nice finds from the Keyser... er... Manlius formation. I sure do love a plate full of Tentaculids. @doushantuo, Thanks for the info. I do not think I have ever seen a rounded tip on any Tentaculite that I have found but now I will have to examine some under the 'scope. Thanks Dave. I'm glad you appreciate Tentaculid plates. Link to comment Share on other sites More sharing options...
Jeffrey P Posted November 21, 2017 Author Share Posted November 21, 2017 On 11/16/2017 at 3:27 PM, Fossildude19 said: Great plates, Jeff! Congratulations. Tentaculites are quite cool, in my opinion. Regards, Thanks Tim. I'm glad we agree on Tentaculites essential coolness. On 11/16/2017 at 6:21 PM, Ludwigia said: Nice plates, Jeff! Thanks Roger. On 11/16/2017 at 6:49 PM, Arizona Chris said: REAL tentaculites - totally killer find. And a whole slab of them? Very impressive. Thanks Arizona Chris. The small site I visited had quite a few lying about. On 11/16/2017 at 9:28 PM, Pagurus said: That's a real fine mess of tentaculites you found there, Jeff. Nice. Thanks Mike. Link to comment Share on other sites More sharing options...
Jeffrey P Posted November 21, 2017 Author Share Posted November 21, 2017 On 11/18/2017 at 10:30 AM, GordonC said: Thanks , Jeff, very informative post and follow through. the Manlius was deposited in a lagoon environment at and slightly below and above mean sea level. Leo Laporte authored definitive papers on the subject. http://paleo.cortland.edu/class/strat/files/Laporte_1967.pdf Gordon Thanks Gordon for the Manlius Formation info. Very much appreciated. Link to comment Share on other sites More sharing options...
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