Incognito Rockhound Posted February 10, 2019 Share Posted February 10, 2019 Hello everyone, I am making a shadow box for my office; before I start doing the final groupings by species and attaching said groupings to the shadow box, I could really use some help. I have made my best educated guesses (using Jayson’s website for references), but since I am a novice, I know I’ve made several mistakes. Will you you please take a look at the attached pictures and let me know if I guessed correctly? If not, will you please let me know the correct answer? Link to comment Share on other sites More sharing options...
Incognito Rockhound Posted February 10, 2019 Author Share Posted February 10, 2019 Item 1. Shortfin mako Item 2. G Aduncus? Item 3. Physogaleus Contortus Item 4. Lemon Shark Link to comment Share on other sites More sharing options...
Incognito Rockhound Posted February 10, 2019 Author Share Posted February 10, 2019 Link to comment Share on other sites More sharing options...
Incognito Rockhound Posted February 10, 2019 Author Share Posted February 10, 2019 Item 5. Snaggletooth (lower) Item 6. ? Item 7. Angel shark? Thresher shark? Link to comment Share on other sites More sharing options...
Incognito Rockhound Posted February 10, 2019 Author Share Posted February 10, 2019 Link to comment Share on other sites More sharing options...
Incognito Rockhound Posted February 10, 2019 Author Share Posted February 10, 2019 Item 8. Various eagle ray dental plates Item 9. Bonnet Ray Link to comment Share on other sites More sharing options...
gigantoraptor Posted February 10, 2019 Share Posted February 10, 2019 2: I think you're correct 3: I think you're correct 5 and 6 are Hemipristis. Snaggletooth shark 1 Link to comment Share on other sites More sharing options...
Incognito Rockhound Posted February 10, 2019 Author Share Posted February 10, 2019 All teeth in group to have both distal and mesial serrations. Link to comment Share on other sites More sharing options...
Incognito Rockhound Posted February 10, 2019 Author Share Posted February 10, 2019 1 hour ago, gigantoraptor said: 2: I think you're correct 3: I think you're correct 5 and 6 are Hemipristis. Snaggletooth shark Thank you! Glad I am on the right path - still much to learn! Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted February 10, 2019 Share Posted February 10, 2019 Nice collection of teeth. Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
MarcoSr Posted February 10, 2019 Share Posted February 10, 2019 When you discuss shark and ray teeth it is best to use the scientific names which are standard worldwide. Common names are not standard, and a single species can have a number of different common names that conflict with other species. In this picture the tooth circled in red is a Carcharhinus sp. tooth. The rest of 2 & 3 are either Galeocerdo sp. or Physogaleus sp. In this picture you could have a mixture of teeth. The teeth circled in red in 8 can be Aetobatus teeth from the upper plate or possibly Aetomylaeus teeth. The rest of the teeth in 8 could be a number of genera like Aetomylaeus, Myliobatis or Rhinoptera. The one tooth in 9 on top is definitely an Aetobatus tooth from the lower plate. The other could be an Aetobatus tooth from the upper plate. Marco Sr. 5 "Any day that you can fossil hunt is a great day." My family fossil website Some Of My Shark, Ray, Fish And Other Micros My Extant Shark Jaw Collection Link to comment Share on other sites More sharing options...
Incognito Rockhound Posted February 10, 2019 Author Share Posted February 10, 2019 Thank you for your input Marco. As I stated above, I still have much to learn so all input is greatly appreciated! I will do my best to use the scientific names from this point forward; I ask that you bear with me as I learn. When it comes to shark teeth and rays, my ability to properly identify and articulate what I am sharing is comparable to a baby learning to walk; I am at the very beginning - somewhere between rocking back and forth and starting to crawl. I will probably fall over on my side several times before I am crawling full time Link to comment Share on other sites More sharing options...
Incognito Rockhound Posted February 10, 2019 Author Share Posted February 10, 2019 2 hours ago, Tidgy's Dad said: Nice collection of teeth. Thank you Link to comment Share on other sites More sharing options...
Incognito Rockhound Posted February 10, 2019 Author Share Posted February 10, 2019 5 hours ago, Incognito Rockhound said: All teeth in group to have both distal and mesial serrations. I just noticed that I forgot to add clarifying info to this statement - the group I am referring to is 2. My apologies for the omission. Link to comment Share on other sites More sharing options...
Praefectus Posted February 11, 2019 Share Posted February 11, 2019 I'm interested to see what others call #1. I know it is some type of Mako, but I'm not sure which. I can narrow it down to I. retroflexus, I. oxyrinchus, I desori, or C. Hastalis, but I'm not sure which. I'm leaning towards I. oxyrinchus. Link to comment Share on other sites More sharing options...
ynot Posted February 11, 2019 Share Posted February 11, 2019 #1 is a lower tooth from Isurus or Carcharodon. Lowers are much harder to differentiate in this group. #6 looks like a Carcharodon hastalis. Does not look like a Hemipristis. 1 Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
Incognito Rockhound Posted February 11, 2019 Author Share Posted February 11, 2019 1 hour ago, ynot said: #1 is a lower tooth from Isurus or Carcharodon. Lowers are much harder to differentiate in this group. #6 looks like a Carcharodon hastalis. Does not look like a Hemipristis. Thank you! What are your thoughts on 4 and 7? Link to comment Share on other sites More sharing options...
ynot Posted February 11, 2019 Share Posted February 11, 2019 22 minutes ago, Incognito Rockhound said: What are your thoughts on 4 and 7? 4 matches with lemon (Negaprion sp.). 7 is neither angel (Squatina sp ) nor thresher (Alopias sp). Possibly a worn Galeocerdo sp. (Tiger). Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
Incognito Rockhound Posted February 11, 2019 Author Share Posted February 11, 2019 7 hours ago, ynot said: 4 matches with lemon (Negaprion sp.). 7 is neither angel (Squatina sp ) nor thresher (Alopias sp). Possibly a worn Galeocerdo sp. (Tiger). Thank you! Link to comment Share on other sites More sharing options...
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