Algerian coral

[fifbrindacier]

 

Here is a coral, does anyone have an idea of its kind and species ?

[Al Dente]

Not coral, it is a coralline algae. https://www.google.com/search?q=coralline+algae&biw=1291&bih=926&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjev9TO-cDPAhXE6iYKHY0fCw0Q_AUICCgB

[doushantuo]

Non geniculate alga(plural:algae).might be Lithophyllum.

This looks like a non-spherical rhodolith,the branches baffled the sediment and larger lithoclasts

ecology of tertiary mediterranean aquatic flora:

 

bragaAlgas Almanzora. Paleo3-1988.pdf

[Guguita2104]

Similar topic (hope this helps):

 

[fifbrindacier]

15 hours ago, Guguita said:

Similar topic (hope this helps):

 

your piece really look like mine Guguita, thanks.

[fifbrindacier]

21 hours ago, doushantuo said:

Non geniculate alga(plural:algae).might be Lithophyllum.

This looks like a non-spherical rhodolith,the branches baffled the sediment and larger lithoclasts

ecology of tertiary mediterranean aquatic flora:

 

bragaAlgas Almanzora. Paleo3-1988.pdf

Lithophyllum seems to be a good candidate. Thanks doushantuo.

[abyssunder]

Unfortunately we don't have high-res images of the encrusting critters, but with the resolution permitted by this croped image, I'm leaning toward Homotrema sp. .
Note the accompanying worm tubes and the ribs of the substrate.

 

 

http://fossilworks.org/?a=taxonInfo&taxon_no=1640
http://www.foraminifera.eu/single.php?no=1000968&aktion=suche

 

ALTAIR J. MACHADO and SIMONE S. MORAES, 2002. A note on the occurrence of the encrusting foraminifera Homotrema rubrum in reef sediments from two distinctive
hydrodynamic settings. Anais da Academia Brasileira de Ciências (2002) 74(4): 727-735. Homotrema rubrum .pdf

 

" Homotrema is a calcareous encrusting foraminifera genus, with a large test (usually more than 8 mm in diameter), with varied shape (globular, hemispheric) and presenting different types of encrustation: irregular, conic, truncated. The first chamber is branched and/or spiraled, and the last ones are distributed in layers. Irregular openings between lateral walls occur when new chambers are added. These unilocular animals have, when alive, a common reddish color, caused by the pigment decomposition of hosted endossimbionts (Loeblich and Tappan 1964, 1988), but become light-pink to whitish after death (Emiliani 1951). The distribution and growth form of Homotrema tests may be controlled by environmental conditions, particularly the local hydrodynamic energy. "

 

"Strawberry fields forever" - The Beatles

[fifbrindacier]

Very nice ID Abyssunder, thanks for that explanation. I didn't had the idea to crop my photos and i can see there are more interesting details than i thought.