Search the Community
Showing results for tags 'serratolamna'.
-
Shark tooth fossil identification required
ilovesharktooth posted a topic in Is It Real? How to Recognize Fossil Fabrications
Hi guys, new member on this forum, would like to ask that are these crow shark and serratolamna shark tooth fossils real, they are really cheap- 3 replies
-
- shark tooth
- squalicorax
-
(and 1 more)
Tagged with:
-
Campanian hunters and shark experts... have you seen this shark tooth?
Mikrogeophagus posted a topic in General Fossil Discussion
Hey everyone, I've recently been interested in a weird tooth morphology I have found a couple times in the Middle Campanian Ozan of Austin. At the moment, I have it ID'd as Serratolamna cf. caraibaea based off of a paper on Aguja sharks (https://doi.org/10.1016/j.cretres.2016.08.008). My specimens seem to be a single anterior and single lateral. These teeth appear to have a nutrient groove, multiple pairs of cusplets, smooth labial and lingual faces, and a basal bulge overhanging the root. They are each about 11 mm from root to tip of the cusp. Something to note is that S. caraibaea had previously only been found in Mexico, Trinidad, and West Africa. I wonder if it's some warmer water species? I wish I could read the species's original description, but alas I have no access to the paper. (Left): Anterior tooth (L) and lower? lateral tooth (R); (Right): Anterior tooth (L) and lateral tooth (R) (Left): Labial view lower? lateral tooth; (Right): Lingual view lingual tooth I've done some digging trying to find this tooth online from places like the NSR and New Jersey, but the closest I can find is Carcharias samhammeri which I think has too many differences. C. samhammeri imo has a more pronounced lingual protuberance, only a single pair of cusplets, and no basal bulge on the labial side, and "thinner root lobes" (hard to put into words sorry). Carcharias holmdelensis has similar issues along with the presence of striations on the lingual face. Scapanorhynchus doesn't look right and neither does Cretalamna. In fact, what partly prompted me to make this post was noticing this tooth's apparent similarity to a Paleocene/Eocene taxon called Brachycarcharias lerichei. What makes the story even more interesting is its criminal history, formerly being under the name Serratolamna lerichei before the creation of Brachycarcharias of the family Odontaspididae. Brachycarcharias lerichei from elasmo.com. Note the anteriors and laterals! Brachycarcharias lerichei lower lateral from elasmo.com The genus Serratolamna itself also has some shakiness to its name. A similar taxon, Serratolamna khderii, of the Campanian in France and Jordan has a past of jumping in and out of the families Odontaspididae and Serratolamnidae. All this to say I'm beginning to wonder if there is a taxonomic connection between my specimens and the genus Brachycarcharias or at least Odontaspididae that isn't yet recognized in academia. One major issue though, is that I only have a couple of these teeth (I've got a really bad itch to hunt in Austin again, but that'll have to wait). I am wondering if any other Campanian hunters have come across something similar and has photos to share? And for the shark experts, I wonder what are your thoughts on this information? Does it pique your interest or is it a "nothing burger"? Any clarification is immensely appreciated! It's not the craziest or coolest tooth design by any means, but it's enough to keep me longing for some answers.- 8 replies
-
- 1
-
- carcharias
- campanian
- (and 6 more)
-
From the album: Eocene
Serratolamna koerti, Burleson Co. Lutetian, Eocene Mar, 2023 I ended up having to take an unexpected trip to A&M this weekend to pick up my brother. Took a quick hunt at the bridge as usual and picked around the fishy layer. I'm so used to finding fingernail sized teeth, I flipped when I wiggled this out. It is now the biggest lamniform in my collection, measuring 40 mm. It's a shame it's worn, but that is to be expected as most of the vertebrate material is reworked at the site.-
- 3
-
- serratolamna koerti
- serratolamna
-
(and 3 more)
Tagged with:
-
Hello, I found this small shark tooth near Austin. The geology of the area corresponds to the Ozan formation (early Campanian) ~78 million years. It looks like a Serratolamna serrata tooth, but I haven’t heard of Serratolamna from the Ozan formation. Or could this be a Cretalamna appendiculata instead?
-
Looking for help to identify the species of shark this tooth came from. I think I know, but am not 100% certain. This tooth is from southern Maryland, from an unknown location that seems to have Eocene material. I'm 100% certain that it is Eocene based on other fossil specimens I have found that are only characteristic of Eocene and not Paleocene. Anyhow, this tooth is 7/8" inch long. Daryl.
- 4 replies
-
- eocene
- serratolamna
-
(and 2 more)
Tagged with:
-
From the album: Cenozoic Sharks
Scarce Eocene Peruvian Serratolamna koerti. -
From the album: Cenozoic Sharks
Scarce Eocene Peruvian Serratolamna koerti. -
From the album: Pisces
Cusp 32m. Upper. From the phosphate plateau at Kouribga, Morocco Paleogene, Eocene-
- serratolamna
- eocene
-
(and 1 more)
Tagged with:
-
A very nice example of this somewhat common tooth in the PeeDee. It can be almost instantly identified by it's asymmetrical shoulders and difference in numbers of accessory cusps on each shoulder.
- 5 comments
-
- 1
-
- cretaceous
- north caroliona
-
(and 3 more)
Tagged with: