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Crinoids and corals?


MrBones

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I found these fossils on Jebel Hafeet, Al Ain, UAE. The second rock looks like there is a criniod in it, but is more possibly a type of sponge. The first rock has quite a few things in it, including some type of coral. I would like to know what these really are.20190202_173846.thumb.jpg.6df0a458d4874994dc3e093ab058a738.jpg20190202_174410.thumb.jpg.63f55d4302d0c05242a178956b5bbae1.jpg

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Cropped and brightened: 

 

20190202_173846.jpg.e786b1cfd888d3051e04aa32ad02a466.jpg   20190202_174336.thumb.jpg.37c9e4089b9f8f4830bc2e53a1fbf326.jpg  20190202_174410.jpg.82190a325f37007b01f25c0e276ae381.jpg

 

These do not look like crinoids, to me. :unsure:

Maybe branching bryozoans on the first items.

Not sure on the second, but possibly some sort of orthocone cephalopod?  :headscratch:

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  • 3 weeks later...
3 hours ago, MrBones said:

Do you think number 2 is some sort of urchin spine? I have found quite alot of ecinoid fossils here.

I have almost no experience with urchins, but I would be more inclined to say it is also a branching tabulate. At the lower end it seems to have the right shapes to be coralites, and the fracture pattern is right. I have a basketball sized chunk of broken pieces like this fused into a big mass.

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To find out if it is a sea urchin thorn, we need photos much closer (with size) ; with the current photos I can't pronounce myself.
 
Coco

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OUTIL POUR MESURER VOS FOSSILES : ici

Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici
Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici
Mâchoires sélaciennes récentes : ici
Hétérodontiques et sélaciens : ici
Oeufs sélaciens récents : ici
Otolithes de poissons récents ! ici

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I agree with @Coco

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1 hour ago, Coco said:
To find out if it is a sea urchin thorn, we need photos much closer (with size) ; with the current photos I can't pronounce myself.
 
Coco

 

1 hour ago, fifbrindacier said:

I agree with @Coco

Both my assessments are probably influenced by the fact that many of my specimens of the coral are poorly preserved and in similar looking rock.

I totally agree that more detail in the photos is needed to have confidence in the identification.

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:headscratch:. . .  It seems like I was wrong about something like this before. That time I believe the consensus was crinoid spike, or spine. (something like that)

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It will be good to know what is the geological age of the sediments holding your finds. Maybe they are from the Cenozoic? :shrug:

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