frankh8147 Posted April 20, 2017 Share Posted April 20, 2017 Hello everyone! I need a little help on a few fossils from Big Brook. I'm trying to find out the genus of this ammonite and echinoid. I'm particularly curious about the echinoid, as I haven't heard of them being there. The last appears to be a tooth with some socket attached (under a loop, the root part looked reptilian so im leaning towards plesiosaur not not sure). Thanks in advance! -Frank Link to comment Share on other sites More sharing options...
frankh8147 Posted April 20, 2017 Author Share Posted April 20, 2017 .. Link to comment Share on other sites More sharing options...
frankh8147 Posted April 20, 2017 Author Share Posted April 20, 2017 Also, for size reference, the 'tooth' is .8 of an inch. Link to comment Share on other sites More sharing options...
Fossildude19 Posted April 20, 2017 Share Posted April 20, 2017 Cropped and brightened: 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...
caldigger Posted April 21, 2017 Share Posted April 21, 2017 Can't assist with IDs, but me thinks your "tooth" is a piece of bone. Link to comment Share on other sites More sharing options...
brad hinkelman Posted April 21, 2017 Share Posted April 21, 2017 Frank the echinoid is awesome!!!!!! cool find Link to comment Share on other sites More sharing options...
frankh8147 Posted April 21, 2017 Author Share Posted April 21, 2017 Thanks for brightening up the pictures fossildude and thanks Brad - I always wanted to find one of those echinoids, I just never thought they were at Big Brook. Caldigger, I was leaning away from bone due to the texture but it can definitely be a possibility because it doesn't match any tooth or bone I have found there. Link to comment Share on other sites More sharing options...
Carl Posted April 21, 2017 Share Posted April 21, 2017 That echinoid is a REAL prize. In 29 years of collecting those brooks I have found only one, many years ago. And I've never even SEEN as ammonite that good from Big Brook! Outstanding work! Link to comment Share on other sites More sharing options...
Fossildude19 Posted April 21, 2017 Share Posted April 21, 2017 Ralph Johnson may be able to ID the ammonite. Great finds! 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...
Carl Posted April 21, 2017 Share Posted April 21, 2017 I'd guess Placenticeras. Link to comment Share on other sites More sharing options...
squali Posted April 21, 2017 Share Posted April 21, 2017 That echinoid is the prize for sure! ive only found them in the Vincenttown lime sands. Nice Placenticeras would be my thought as well based on the sutures and the contour It's hard to remember why you drained the swamp when your surrounded by alligators. Link to comment Share on other sites More sharing options...
frankh8147 Posted April 21, 2017 Author Share Posted April 21, 2017 2 hours ago, Fossildude19 said: Ralph Johnson may be able to ID the ammonite. Great finds! Regards, Thanks again fossildude! And thanks Carl, it has been a good year so far; looking forward to digging with you again sometime soon. Link to comment Share on other sites More sharing options...
frankh8147 Posted April 24, 2017 Author Share Posted April 24, 2017 One more question; is there any way to identify what kind echinoid that is and if it is the same type that has been found at Crosswicks? Thanks! Link to comment Share on other sites More sharing options...
Uncle Siphuncle Posted April 24, 2017 Share Posted April 24, 2017 Can't see sutures well on my phone, nor keel from one view, but you might also compare the ammo with Sphenodiscus as well, esp if the strata is Masstrichtian. If Campanian, I'd start with Placenticeras. As for the echinoid, compare with Cardiaster. Grüße, Daniel A. Wöhr aus Südtexas "To the motivated go the spoils." Link to comment Share on other sites More sharing options...
frankh8147 Posted April 26, 2017 Author Share Posted April 26, 2017 Thanks uncle siphuncle! I will certainly into those options. Link to comment Share on other sites More sharing options...
Carl Posted April 26, 2017 Share Posted April 26, 2017 On 4/24/2017 at 2:06 PM, frankh8147 said: One more question; is there any way to identify what kind echinoid that is and if it is the same type that has been found at Crosswicks? Thanks! Also, Ralph Johnson should know. Link to comment Share on other sites More sharing options...
Fossildude19 Posted April 26, 2017 Share Posted April 26, 2017 I wonder if @PFOOLEY has any thoughts on the ammonite? 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...
PFOOLEY Posted April 26, 2017 Share Posted April 26, 2017 44 minutes ago, Fossildude19 said: I wonder if @PFOOLEY has any thoughts on the ammonite? Id have to agree with Carl and Squali...it compares very well with Placenticeras (?placenta) "I am glad I shall never be young without wild country to be young in. Of what avail are forty freedoms without a blank spot on the map?" ~Aldo Leopold (1887-1948) New Mexico Museum of Natural History Bulletins Link to comment Share on other sites More sharing options...
doushantuo Posted April 26, 2017 Share Posted April 26, 2017 Kennedy Link to comment Share on other sites More sharing options...
PFOOLEY Posted April 26, 2017 Share Posted April 26, 2017 4 minutes ago, doushantuo said: Kennedy "I am glad I shall never be young without wild country to be young in. Of what avail are forty freedoms without a blank spot on the map?" ~Aldo Leopold (1887-1948) New Mexico Museum of Natural History Bulletins Link to comment Share on other sites More sharing options...
Plax Posted April 26, 2017 Share Posted April 26, 2017 I think the ammonite species might be syrtale? which I've probably misspelled. Placenta is an older species if my memory serves me well. I have seen Hardouinea and Catopygis from Big Brook as far as the echinoid. I don't think this looks like hardouinea. Link to comment Share on other sites More sharing options...
doushantuo Posted April 26, 2017 Share Posted April 26, 2017 placenticeratidae: multiplication of auxiliary and adventitious elements of the suture line Schluter named "Ammonites " syrtalis around 1871-1876 de Grossouvre named Placenticeras syrtalis. Hyatt probably disagreed with the both of them Isn't that Hardouinia,BTW?and CATOPYGUS? Link to comment Share on other sites More sharing options...
Plax Posted April 26, 2017 Share Posted April 26, 2017 should have stated that all of it may have been misspelled! Am posting from my work computer and using my brain. Not always a good combination Link to comment Share on other sites More sharing options...
FossilDAWG Posted April 26, 2017 Share Posted April 26, 2017 I think P. syrtalis is the older species, as it occurs in the Santonian Tombigbee Sand in Alabama and correlative beds in Georgia. The prominence of tubercles varies quite a bit, but generally P. syrtalis is more ornate than P. placenta. Also P. placenta occurs in the Merchantville and the Mt Laurel, such as along the C & D canal. Overall I lean towards P. placenta for the specimen, though as others noted it would be nice to have a better photo of the sutures before completely excluding Sphenodiscus. Don Link to comment Share on other sites More sharing options...
Plax Posted April 26, 2017 Share Posted April 26, 2017 you're probably right dawg. Fossilworks shows it ranging to the maastrichtian though (85.8-66.043mya). I may have the species wrong but it isn't placenta from my recollection. Have never heard of placenta in the Mt laurel at C&D. Tons of them in the deep cut Merchantville though of course. Placenta is an early campanian taxon as far as I know. I should probably refrain from guessing and just refer folks to the AMNH Neil Landman papers which are available on line. Where's Ralph Johnson when we need him! Link to comment Share on other sites More sharing options...
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