Jump to content

Kem kem crocodiles


Thefossilman92

Recommended Posts

Hi!
I have a handfull of croc teeth from kem kem , and I would like to learn more about identifying these croc teeth. I know that it can be hard to id these teeth
but I was wondering if someone got some papers where most of the discoveries of moroccan crocs are illustrated? ,
I´ve been trying to find some but with no luck, I just found some papers that only describes Elosuchus.
 

Link to comment
Share on other sites

  • I found this Informative 5

The trouble with having an open mind, of course, is that people will insist on coming along and trying to put things in it. Terry Pratchett ...

Link to comment
Share on other sites

in kem kem beds we have a small crocodile of the family Trematochampsidae: hammadosuchus rebouli,
 a stomatosuchid: Laganosuchus maghrebiensis 
 an elosuchid: Elosuchus cherifiensis.

Elosuchus is called before thoracosaurus, named by rene Lavocat in 1955, then correct again in 2002
 by the Museum of Natural History of Paris.

a small internet link:

http://www.sesne.fr/maroc_2010.pdf

https://docplayer.fr/51068541-Elosuchus-a-new-genus-of-crocodile-from-the-lower-cretaceous-of-the-north-of-africa.html

 

https://peerj.com/articles/759.pdf

 

https://www.academia.edu/29839427/A_new_sebecosuchian_crocodyliform_from_the_Late_Cretaceous_of_Patagonia

 

KELLNER A.W.A. & MADER B.J., 1997. Archosaur teeth from the Creatceous rocks of Morocco. J. Vert. Palaeontol. 17 (3) : 62A.

LAPPARENT A. F. de, 1960. – Les dinosauriens du « Continental Intercalaire» du Sahara central. Mémoire de la Société géologique de France 88A : 1-56.

LAVOCAT, R., 1954c. Sur les dinosauriens du Continental Intercalaire des Kem-Kem de la Daoura. 19th International Geological Congress 15 : 65–68.

  • I found this Informative 5

The trouble with having an open mind, of course, is that people will insist on coming along and trying to put things in it. Terry Pratchett ...

Link to comment
Share on other sites

25 minutes ago, jnoun11 said:

in kem kem beds we have a small crocodile of the family Trematochampsidae: hammadosuchus rebouli,
 a stomatosuchid: Laganosuchus maghrebiensis 
 an elosuchid: Elosuchus cherifiensis.

Elosuchus is called before thoracosaurus, named by rene Lavocat in 1955, then correct again in 2002
 by the Museum of Natural History of Paris.

a small internet link:

http://www.sesne.fr/maroc_2010.pdf

https://docplayer.fr/51068541-Elosuchus-a-new-genus-of-crocodile-from-the-lower-cretaceous-of-the-north-of-africa.html

 

https://peerj.com/articles/759.pdf

 

https://www.academia.edu/29839427/A_new_sebecosuchian_crocodyliform_from_the_Late_Cretaceous_of_Patagonia

 

KELLNER A.W.A. & MADER B.J., 1997. Archosaur teeth from the Creatceous rocks of Morocco. J. Vert. Palaeontol. 17 (3) : 62A.

LAPPARENT A. F. de, 1960. – Les dinosauriens du « Continental Intercalaire» du Sahara central. Mémoire de la Société géologique de France 88A : 1-56.

LAVOCAT, R., 1954c. Sur les dinosauriens du Continental Intercalaire des Kem-Kem de la Daoura. 19th International Geological Congress 15 : 65–68.

Thanks a lot! :)

Link to comment
Share on other sites

I am aware of 7 described Crocodyliformes in the Kem Kem beds.

- Lavocatchampsa sigogneaurussellae  

image.png.0d57277b13bea70e544b41be23302268.png

- KemKemia auditorei , no teeth of this species are known, only caudal vertebra.

- Aegisuchus witmeri Don't have anything about these teeth.

- Araripesuchus rattoides teeth should look like this.

image.png.282053fb400236b3d8abe265a6d7a4ac.png

 

- Elosuchus cherifiensis  teeth can sometimes be identified by their huge size.

 - Hamadasuchus rebouli

image.png.ceb09765841ddfea7693ceab18f427e7.png

- Laganosuchus maghrebensis

image.png.37840f39343fa8ff10a9274d0c77334b.png

  • I found this Informative 2
Link to comment
Share on other sites

  • 1 year later...
On 04/06/2019 at 11:31 PM, RuMert said:

Sorry for a newb question, but how do you distinguish crocodile teeth from ichthyosaur/plesiosaur?

Hi Yury,

 

I'm sure you are aware of this by now, but let me answer this just for others that might find their way here:

 

- Neither ichthyosaurs nor plesiosaur typically have carinae, whereas crocodilians typically do.

- Ichthyosaurian teeth have rounded enamel-folds on their tooth crowns (known as plicidentine), which sets their teeth apart from the more crisp/squared striations of both crocodilians and plesiosaurians. These enamel-folds, moreover, contrary to crocodilian and plesiosaurian striations, are very consistent in width and height.

- The roots of ichthyosaurs can be anywhere from rounded through triangular to rectangular in shape (as their teeth are not individually socketed, but instead sit in a tooth-groove), and may exhibit folding, much like their tooth crowns. In contrast, the roots of crocodilian and plesiosaurian teeth are round and pen-like/tubercular, with pliosaurian teeth supposedly having a bulge directly underneath the tooth crown.

- Sometimes it's a matter of geological context: ichthyosaurs and plesiosaurs were only around during the Mesozoic, and almost exclusively (with some exceptions amongst Cretaceous plesiosaurs) occur in marine sediments.

 

  • I found this Informative 2

'There's nothing like millions of years of really frustrating trial and error to give a species moral fibre and, in some cases, backbone' -- Terry Pratchett

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...