PaleoQuest Posted January 20, 2017 Share Posted January 20, 2017 This piece arrived by way of Copper Canyon in Chihuahua, Mexico. Its owner is inquiring if it's an authentic piece and the best way it could get appraised. Link to comment Share on other sites More sharing options...
PaleoQuest Posted January 20, 2017 Author Share Posted January 20, 2017 This piece was located in the Copper Canyon in the state of Chihuahua, Mexico and we needed help in properly identifying it.s Link to comment Share on other sites More sharing options...
Fossildude19 Posted January 20, 2017 Share Posted January 20, 2017 Sorry, but we don't do appraisals here, per the Forum Rules and Community Standards. "Please understand that The Fossil Forum cannot appraise the commercial value of a fossil; this is beyond what can be done through pictures on the internet, so please don't ask." Your best bet is to get it identified (I do believe it is real) and then check the internet auction sites for what similar sized/condition fossils are going for. Unfortunately, I cannot see the sutures, ... so, ID may be difficult to identify. That also means the preservation isn't excellent. 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...
PaleoQuest Posted January 20, 2017 Author Share Posted January 20, 2017 Thank you Tim for the solid advice. Link to comment Share on other sites More sharing options...
Fossildude19 Posted January 20, 2017 Share Posted January 20, 2017 Probably a few more views, ... top, sides, bottom etc. with something in the picture for scale (ruler, tape measure) would be helpful to coming to an accurate ID. Any idea of the age of the rocks where it was from? 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...
JohnJ Posted January 20, 2017 Share Posted January 20, 2017 9 minutes ago, PaleoQuest said: Thank you Tim for the solid advice. I merged both your topics on this ammonite. Responses about the same fossil are less confusing when retained in a single topic. You can add photos using the Reply box below. Welcome to TFF. The human mind has the ability to believe anything is true. - JJ Link to comment Share on other sites More sharing options...
PaleoQuest Posted January 20, 2017 Author Share Posted January 20, 2017 To answer Tim's rock age question. We really don't have an exact idea except that Copper Canyon region is located in Sierra Madre Occidental major mountain range in Northwestern Mexico and part of the North American Cordillera. According to Wikipedia, "some of this area has a series of Paleozoic sedimentary sequences from a deep marine environment underlying it". I took the liberty to include another photo with a tape measure included. Link to comment Share on other sites More sharing options...
Fossildude19 Posted January 20, 2017 Share Posted January 20, 2017 These are the views we need to see: If the area has paleozoic fossils, then it is more likely a nautiloid or goniatite, rather than an ammonite. 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...
PFOOLEY Posted January 20, 2017 Share Posted January 20, 2017 You might compare with Placenticeras colquitti... ...from Senonian (Cretaceous) Mollusca from Trans-Pecos Texas and Northeastern Chihuahua, Mexico. "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...
FossilDAWG Posted January 20, 2017 Share Posted January 20, 2017 I was also thinking of Placenticeras syrtale, but there are some look-alikes so it would be important to know the location and age. It would help to be able to see the suture lines. There are no Paleozoic fossils that resemble the photos. I know it will never happen, but I do wish people would just refuse to purchase specimens that lack good provenance (locality and geological formation) data. Many (most?) dealers will not pay attention to providing this information until they are forced to, although the best ones do already. A fossil without proper provenance data is just an ornament, stripped of any scientific value. Don Link to comment Share on other sites More sharing options...
Ramon Posted January 21, 2017 Share Posted January 21, 2017 Northern Mexico is mostly Late Cretaceous in age. I doubt it is from the paleozoic era. It looks more ammonite ish to me than goniatite or other nautiloid. "Without fossils, no one would have ever dreamed that there were successive epochs in the formation of the earth" - Georges Cuvier Link to comment Share on other sites More sharing options...
PaleoQuest Posted January 23, 2017 Author Share Posted January 23, 2017 The owner of this fossil just got back to me with some new information which is different from what was shared initially (my sincerest apologies). It appears this piece was found outside of Ojinaga near Rio Conchos tributary to the Rio Grande. As far as the type of rock where it was located, he didn't know but did share that there are several fossilized tree trunks located in the same area in the strata. Data collection continues, but I thought I'd pass along the correction. Link to comment Share on other sites More sharing options...
Ramon Posted January 23, 2017 Share Posted January 23, 2017 44 minutes ago, PaleoQuest said: The owner of this fossil just got back to me with some new information which is different from what was shared initially (my sincerest apologies). It appears this piece was found outside of Ojinaga near Rio Conchos tributary to the Rio Grande. As far as the type of rock where it was located, he didn't know but did share that there are several fossilized tree trunks located in the same area in the strata. Data collection continues, but I thought I'd pass along the correction. Yeah, see late creataceous!!! There's the javelina and Ojinaga formations. They are from the campanian and Maastrichtian or about 75-65 million years ago. "Without fossils, no one would have ever dreamed that there were successive epochs in the formation of the earth" - Georges Cuvier Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.