Allocoenia sp.

Vasseur, Raphaël & Lathuilière, Bernard, 2021, Pliensbachian corals from the Western Tethys, Geodiversitas 43 (22), pp. 1187-1291 : 1194

publication ID

https://doi.org/ 10.5252/geodiversitas2021v43a22

publication LSID

urn:lsid:zoobank.org:pub:6D1643AD-66A5-4678-9397-CE08E610D641

persistent identifier

https://treatment.plazi.org/id/03A287A2-484A-313B-9E7E-652DFAEDF83B

treatment provided by

Felipe

scientific name

Allocoenia sp.
status

 

Allocoenia sp.

( Fig. 2 View FIG )

Allocoenia sp. 1 – Vasseur 2018: 109-110, fig. 3.2.

STUDIED SAMPLES. — Five specimens: 1603A3E5, DA3005E1, DA0106E2-2, MA0504E7-9, MA1004E4-11 (collections CPUN).

GEOGRAPHIC AND STRATIGRAPHIC RANGES. — Pliensbachian of Koudiat Ech Chehem (Guigou plateau, Middle Atlas of Morocco) and Toarcian of Amellagou and Dadès Valley ( High Atlas of Morocco).

DESCRIPTION

Cerioid massive corallum forming small, rounded, pluricentrimetric colonies. The calices are subcircular to polygonal and multiply by extracalicular increase. Radial elements are straight, free or joined, subcompact septa with welldefined but quite irregular trabecular structure producing irregular granules on lateral faces. The inner edge of septa is sometimes swollen or paliform. The septal apparatus is organized in 3 distinct size orders and sometimes the firstorder septa reach the axial styliform columella. Endotheca made of many vesicular dissepiments. Synapticulae not observed. Wall present, of undetermined nature. No holotheca observed.

Calicular diameter: 1.1 to 4.2 mm – Distance between calice centers: 1.5 to 3.5 mm – Number of septa: 16 to 32 – Septal density: 3 to 5 per 1 mm.

SIMILARITIES AND DIFFERENCES

The comparison with the numerous Triassic and Jurassic species of the genera cited above is still to be done.

Kingdom

Animalia

Phylum

Cnidaria

Class

Anthozoa

Order

Scleractinia

Family

Actinastreidae

Genus

Allocoenia

Loc

Allocoenia sp.

Vasseur, Raphaël & Lathuilière, Bernard 2021
2021
Loc

Allocoenia sp. 1

VASSEUR R. 2018: 109
2018
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