a type of sponge characterized by their (usually) six siliceous spicules or rays
Also called: hexact
Examples of 'hexactinellid' in a sentence
hexactinellid
All described species are hypercalcified sponges, only one species of chambered hexactinellid was found.
BABA SENOWBARI-DARYAN, KOROOSH RASHIDI, HADIS BEITOLLAH 2011, 'HYPERCALCIFIED SPONGES FROM A SMALL REEF WITHIN THE NORIAN-RHAETIAN NAYBAND FORMATIONNEAR YAZD, CENTRAL IRAN', Rivista Italiana di Paleontologia e Stratigrafiahttps://riviste.unimi.it/index.php/RIPS/article/view/5974. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
In some reefs a variety of hexactinellid sponges also occur.
BABA SENOWBARI-DARYAN, KAZEM SEYED-EMAMI, ALI AGHANABATI 1997, 'SOME INOZOID SPONGES FROM UPPER TRIASSIC (NORIAN-RHAETIAN) NAYBAND FORMATION OF CENTRALIRAN', Rivista Italiana di Paleontologia e Stratigrafiahttps://riviste.unimi.it/index.php/RIPS/article/view/5294. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Fragments of dyctional gratings without lychnisks and free spicules of hexactinellid sponges are frequent (pentactines, hexactines).
Stephanska T.A. 2015, 'Sponge fossils of Middle Dnieper River Upper Eocenian deposits (geological surveysheet area «Kobelyaki»)', Vìsnik Dnìpropetrovsʹkogo Unìversitetu: Serìâ Geologìâ, Geografìâhttp://geology-dnu.dp.ua/index.php/GG/article/view/190/pdf_6. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)