Complexastrea cf. gregaria ( M’Coy, 1848 )

Vasseur, Raphaël & Lathuilière, Bernard, 2021, Pliensbachian corals from the Western Tethys, Geodiversitas 43 (22), pp. 1187-1291 : 1274-1277

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/03A287A2-481A-316E-99D2-67EFFD31FA47

treatment provided by

Felipe

scientific name

Complexastrea cf. gregaria ( M’Coy, 1848 )
status

 

Complexastrea cf. gregaria ( M’Coy, 1848) View in CoL

( Fig. 61 View FIG )

Montlivaultia gregaria M’Coy, 1848: 403 .

Thecosmilia gregaria View in CoL – Milne Edwards & Haime 1851: 135, pl. 28, fig. 1-1a; 1857: 359. — Fromentel 1861: 144. — Duncan 1872: 18, pl. 6, fig. 1-2-3-4. — Tomes 1878: 299. — Meyer 1888: 19, pl. 4, fig. 3-6. — Lang 1917: 93.

Chorisastraea gregaria View in CoL – Tomes 1882: 429; 1886: 445.

Confusastraea gregaria View in CoL – Beauvais 1974: 20.

Complexastrea sp. 2 – Vasseur 2018: 147-148, fig. 3.17.

TYPE MATERIAL. — Syntypes Sedgwick Museum Cambridge, J 34976 View Materials - J 34978 View Materials , J 6116-J 6117. TYPE LOCALITY. — Inferior Oolite of Dundry, Somerset, England and Cheltenham, Gloucester shire, England. STUDIED SAMPLES. — Two specimens:CPUN MA0504E2-3, CPUN MA0504E2-4. GEOGRAPHIC AND STRATIGRAPHIC RANGES. — Pliensbachian of Taililout ( Middle Atlas of Morocco).

DESCRIPTION

Cerio-plocoid massive corallum with subcircular corallites often distorted and fluctuating in diameter. Radial elements are compact, free or joining by their inner edge, often curved costosepta. Lateral faces hold granules with typically montlivaltid distribution and shape. No columella. Endotheca abundant, made of vesicular dissepiments. Incomplete wall made with the external twisted edge of septa, no synapticulae. Some remains of what seems to have been a holotheca have been observed. Calicular diameter: 8 to 23 mm – Distance between calices: 13 to 18 mm – Number of septa:>80 – Septal density: 2 to 4 per 2 mm.

SIMILARITIES AND DIFFERENCES

The Pliensbachian specimens show higher number of septa and septal densities than the Toarcian specimens but the variations of these characters fit with the morphometric variability of Complexastrea gregaria (see Lathuilière1996), a species described up until now in Middle Jurassic that shows important intraspecific variability. We maintain a cf. due to the tendency of calices to be smaller than in Middle Jurassic C. gregaria .

Kingdom

Animalia

Phylum

Cnidaria

Class

Anthozoa

Order

Scleractinia

Family

Thecosmiliidae

Genus

Complexastrea

Loc

Complexastrea cf. gregaria ( M’Coy, 1848 )

Vasseur, Raphaël & Lathuilière, Bernard 2021
2021
Loc

Complexastrea sp. 2

VASSEUR R. 2018: 147
2018
Loc

Confusastraea gregaria

BEAUVAIS L. 1974: 20
1974
Loc

Chorisastraea gregaria

TOMES R. F. 1886: 445
TOMES R. F. 1882: 429
1882
Loc

Thecosmilia gregaria

LANG W. D. 1917: 93
MEYER D. 1888: 19
TOMES R. F. 1878: 299
DUNCAN P. M. 1872: 18
FROMENTEL E. DE 1861: 144
MILNE EDWARDS H. & HAIME J. 1851: 135
1851
Loc

Montlivaultia gregaria M’Coy, 1848: 403

M'COY F. 1848: 403
1848
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