Hypercalcified sponges from the Upper Triassic (Norian-Rhaetian) reefs of Sicily

Journal article

Publication Details

Author(s): Senowbari-Daryan B, Di Stefano P, Abate B
Journal: Quaderni del Museo Geologico G. G. Gemmellaro
Publication year: 2015
Volume: 10
Pages range: 1-300
Language: English


The sponge-dominated Upper Triassic (Norian-Rhaetian) reefs of Sicily yielded the most abundant hypercalcified sponge taxa compared with other time equivalent reefs in the world. Chambered sponges (“Sphinctozoa”) are the most abundant group among the hypercalcified sponges. All together almost 150 species of hypercalcified sponges (including sphinctozoans, inozoans, chaetetids, disjectoporids and spongiomorphids) were recognized in the Norian-Rhaetian reefs occurring in different localities in Sicily. 93 species (30 new, 28 as sp. indet.) of sphinctozoans, belonging to 18 families (2 new: Polytubithalamiidae, Globucatenulaiidae) and 35 genera (4 new: Globucatenula, Polytubithalamia, Rostrospongia, Semiuvanella), are described in this paper. Seven genera were established as new genera in previous publications from the reefs of Sicily. These genera are not known from other Norian-Rhaetian reef localities. Therefore 11 genera (about 30%) of sphinctozoan sponges of Sicily are endemic. Among the species level 21 species of the described 93 species in this paper were described in previous publications and are not known from other time equivalet reefs on the word. Therefore 51 species (about 55%) of sphinctozoan species of Sicily are endemic. Unchambered group (including: inozoids, disjectoporids and spongiomorphids) are represented by 8 families (one new: Noritubispongiidae), 23 genera (8 new: Incertuspongia, Irregulaspongia, Multilaticanalia, Noritubispongia, Pustulispongia, Tenuipariespongia, Trinakrispongia, Vesicotubispongia, 2 ind.) and 42 species (22 new, 10 as sp.). From 8 new genera of inozoan sponge 7 genera, occurring in reefs of Sicily are endemic. Only the genus Noritubispongia occurs also in reefs carbonates of Pelepones, Greece (see description in the text). Therefore about 30% of inozoans are endemic in the reefs of Sicily. From 42 species of the inozans, described in this paper 21 (50%) species seem to be endemic in reefs of Sicily (Noritubispongia chaetetiformis occurs also in Greece). Chaetetid sponges were recognized with 10 genera (2 new: Conochaetetes, Magnicanalifera) and 15 species (3 new: Atrochaetetes conicus n. sp., Conochaetetes magnitubus n. gen., n. sp., Magnicanalifera lupensis n. gen., n. sp.). Chaetetids in the studied material, described as new in this paper, seem to be an endemic fauna. Only one hexactinellid sponge (gen. et sp. ind.) was found in one thin-section in the collection. The life-style and the role of described sponges in Triassic reefs and their diversity are discussed and compared with some other time equivalent deposit reefs on the world.

FAU Authors / FAU Editors

Senowbari-Daryan, Baba apl. Prof. Dr.
Naturwissenschaftliche Fakultät

External institutions with authors

Università degli Studi di Palermo

How to cite

Senowbari-Daryan, B., Di Stefano, P., & Abate, B. (2015). Hypercalcified sponges from the Upper Triassic (Norian-Rhaetian) reefs of Sicily. Quaderni del Museo Geologico G. G. Gemmellaro, 10, 1-300.

Senowbari-Daryan, Baba, Pietro Di Stefano, and Benedetto Abate. "Hypercalcified sponges from the Upper Triassic (Norian-Rhaetian) reefs of Sicily." Quaderni del Museo Geologico G. G. Gemmellaro 10 (2015): 1-300.


Last updated on 2018-10-08 at 21:53