Globidens alabamaensis

Nice find! I wish it was not uncommon for me! 

Really cool find!

Nice find!

I am confused, though.  I have collected Ptychodus mortoni from the Tombigbee Sand in Alabama, which is Upper Santonian-Lower Campanian.  I believe the genus went extinct in the Santonian, which is very definitely Late Cretaceous.  So something is off about Globidens alabamaensis appearing after the disappearance of Ptychodus in the Early Cretaceous.

Don

11 minutes ago, FossilDAWG said:

Nice find!

I am confused, though.  I have collected Ptychodus mortoni from the Tombigbee Sand in Alabama, which is Upper Santonian-Lower Campanian.  I believe the genus went extinct in the Santonian, which is very definitely Late Cretaceous.  So something is off about Globidens alabamaensis appearing after the disappearance of Ptychodus in the Early Cretaceous.

The genus Globidens is supposed to have been around from the Turonian to Maastrichtian stages of the Late Cretaceous. So, indeed, the statement of them appearing as of the Santonian would appear to be incorrect...

2 hours ago, FossilDAWG said:

Nice find!

I am confused, though.  I have collected Ptychodus mortoni from the Tombigbee Sand in Alabama, which is Upper Santonian-Lower Campanian.  I believe the genus went extinct in the Santonian, which is very definitely Late Cretaceous.  So something is off about Globidens alabamaensis appearing after the disappearance of Ptychodus in the Early Cretaceous.

 

Don

Sorry that was a typo on my part. I meant Early Campanian and not Cretaceous. Good catch

1 hour ago, pachy-pleuro-whatnot-odon said:

The genus Globidens is supposed to have been around from the Turonian

Wow I had not heard that the genus was that old. I was under the impression they only began in the Campanian. Do they have any species named for the stages before then?

4 hours ago, EPIKLULSXDDDDD said:

Wow I had not heard that the genus was that old. I was under the impression they only began in the Campanian. Do they have any species named for the stages before then?

Not sure, as my statement was going off of Wikipedia, which mentions the genus as being around from 84.9 Ma. This means my earlier mention of Turonian was in error - which makes sense considering any of the more derived mosasaur genera only came about in the Santonian. Seems the same was the case for Globidens, which would have arisen somewhere in the Late Santonian, if Wikipedia is to be believed. So I'd say your indication of Early Campanian is correct after all...