Stylophyllopsis zitteli Frech, 1890

Vasseur, Raphaël & Lathuilière, Bernard, 2021, Pliensbachian corals from the Western Tethys, Geodiversitas 43 (22), pp. 1187-1291 : 1270

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/03A287A2-4816-3167-9B48-65EAFB44FCA0

treatment provided by

Felipe

scientific name

Stylophyllopsis zitteli Frech, 1890
status

 

Stylophyllopsis zitteli Frech, 1890 View in CoL

( Fig. 58 View FIG )

Stylophyllopsis zitteli Frech,1890: 49 View in CoL , pl. 13, fig. 9-15 et 17-24. — Cuif 1973: 243, txt-fig. 15-18. — Roniewicz 1989: 125, pl. 39, fig. 8 and pl. 40, fig. 5-7. — Vasseur 2018: 335-336, fig. 3.92.

Stylophyllopsis zitteli var. crassisepta Haas, 1909: 149 , pl. 5, fig. 9.

non Oppelismilia zitteli Kristan-Tollmann & Tollmann, 1963: 562 , pl. 7, fig. 1 et pl. 8, fig. 2-5.

non Phacelostylophyllum zitteli Melnikova, 1972: 198 View in CoL , txt-fig. 5, pl. 9, fig. 6-7; 1975b: 79, txt-fig. 6, pl. 11, fig. 2-7.

Stylophyllopsis zitelli [sic] – Beauvais 1986: 7.

STUDIED SAMPLES. — Two specimens: CPUN 2703 A3-3, CPUN AM16179-8. GEOGRAPHIC AND STRATIGRAPHIC RANGES. — Rhaetian of Austria, Pliensbachian of Amellagou ( High Atlas of Morocco).

DESCRIPTION

Solitary coral, cylindrical to conical, quite irregular in shape. Radial elements are subcompact costosepta of a well-defined stylophyllid structure in their inner part but showing a wavy mid-septal line in the two peripheral thirds (this character can fit with a stylophyllid structure, see for example Cuif 1972 or Stolarski & Russo 2002). They are large, with detachments of quite rough septal spines at the inner edge and sometimes some stereome layers in depth. The last-order septa are constituted of only one or two septal spines that appear oblong (i.e. subcircular but elongated) in transverse section. No columella observed but the genus is described as having sometimes a papillose columella made of septal spines projected in the axial space. Endotheca made of large vesicular dissepiments with stereomal thickenings, in continuity with enlarged septa. An often eroded epicostal epitheca s.l. seems to wrap the corallum. Calicular diameter: 14 to 26 mm – Number of septa: 43 to 47 – Septal density: 3 to 4 per 2 mm.

SIMILARITIES AND DIFFERENCES

This species differs from other Stylophyllopsis species by its large, weakly numerous septa with mid-septal line in the peripheral part of the corallite transverse section. Dissepiments are large too. The last-order septa are sometimes constituted of only one or two septal spines that appear oblong (i.e. subcircular, elongated) in transverse section.

Kingdom

Animalia

Phylum

Cnidaria

Class

Anthozoa

Order

Scleractinia

Family

Stylophyllidae

Genus

Stylophyllopsis

Loc

Stylophyllopsis zitteli Frech, 1890

Vasseur, Raphaël & Lathuilière, Bernard 2021
2021
Loc

Stylophyllopsis zitelli

BEAUVAIS L. 1986: 7
1986
Loc

Phacelostylophyllum zitteli

MELNIKOVA G. K. 1972: 198
1972
Loc

Oppelismilia zitteli Kristan-Tollmann & Tollmann, 1963: 562

TOLLMANN E. & TOLLMANN A. 1963: 562
1963
Loc

Stylophyllopsis zitteli var. crassisepta

HAAS O. 1909: 149
1909
Loc

Stylophyllopsis zitteli

VASSEUR R. 2018: 335
RONIEWICZ E. 1989: 125
CUIF J. P. 1973: 243
FRECH F. 1890: 49
1890
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