? coral

[drbush]

Kindly help me with this , it is a surface find , dhruma formation , early Jurassic, ? coral of some type , it is small & oval 

[supertramp]

Cyclolites?

Ciao

[terapoza]

I would say Cyclolites if it would be Cretaceous.

[abyssunder]

The sediments of the Dhruma formation are Middle Jurassic - Bathonian in age. Are you sure you're not hunting in the Upper Cretaceous?

[terapoza]

I found article about Dhruma formation. Jurassic rocks are followed by Cretaceous marls and limestones. 

[abyssunder]

The specimen in question looks close to Cunnolites. Here are described and illustrated eight species of the genus from the Maastrichtian of Central Saudi Arabia: M.A.Ghalib El-Asa'ad. 1990. Maastrichtian species of the coral genus Cunnolites from Saudi Arabia. Journal of African Earth Sciences, Vol. 10, No. 4, pp. 633-642

 

 

Hope this helps.

[HansTheLoser]

Cyclolites is a solitary coral. Cunnolites is a junior synonym. The depicted fossil could be Aspidastraea. Same family, but colonial. Known range: Upper Campanian to Maastrichtian.

[Pachy]

http://www.corallosphere.org/genus/113

Mmmmmmmm !!!! ????, better shots to see how colonial is that bug.

Details of the calicinal surface looking for that possible colony.

 

[abyssunder]

On 12/22/2017 at 1:23 PM, HansTheLoser said:

Cyclolites is a solitary coral. Cunnolites is a junior synonym. The depicted fossil could be Aspidastraea. Same family, but colonial. Known range: Upper Campanian to Maastrichtian.

Good call! Same family (Cunnolitidae) but different genus.

 

PLATE 5
Figs 2, 4 Cunnolites sp.; 2, AZ 400; 4, AZ 865.

 

PLATE 10
Figs 1, 4 Aspidastraea orientalis ( Kuhn, 1933); 1, AZ 188; 4, AZ 636.

 

PLate 12
Figs 2, 4. 5 Aspidastraea semhae ( Kossmat, 1907); 2, juvenile form, AZ 407; 4, AZ 411 ; 5, AZ 572.

 

excerpts from R. C. Baron-Szabo. 2000. Late Campanian-Maastrichtian corals from the United Arab Emirates-Oman border region. Bulletin of the Natural History Museum of London (Geology) 56(2):91-131

[Pachy]

Cyclolites and Aspidastraea are from the same family, yes. But of the Cyclolitidae family.

[HansTheLoser]

corallosphere = mix of good and bad data, not very trustworthy since you never know which quality has a specified item.

[Pachy]

41 minutes ago, HansTheLoser said:

corallosphere = mix of good and bad data, not very trustworthy since you never know which quality has a specified item.

But if you know how to choose the good there is good information there.
For example, in this case there are images of the type specimen of Aspidastraea.

It's just a matter of knowing how to choose. Take advantage of the good and undo the bad. As in life itself.

You have easy access to this kind of thing, I have to get them out of here and there with a lot of work and knowing how to choose.

[abyssunder]

You can contact the editor if you would like to contribute to the diagnosis of this taxon, eventually change the family name Cunnolitidae to Cyclolitidae.

[HansTheLoser]

Good joke Abyssunder.