Robuta

https://marinespecies.org/aphia.php?p=taxdetails&id=166839

WoRMS - World Register of Marine Species - Petrosia (Petrosia) hebes Lendenfeld, 1888

marine species worms world register petrosia

https://marinespecies.org/porifera/porifera.php/www.aqua-aquapress.com/porifera.php?p=taxdetails&id=195626

World Porifera Database - Species - Petrosia similis var. massa Ridley & Dendy, 1886

world porifera database species petrosia

https://marinespecies.org/porifera/porifera.php/www.aqua-aquapress.com/porifera.php?p=taxdetails&id=716554

World Porifera Database - Species - Petrosia pellasarca (de Laubenfels, 1934)

world porifera database species petrosia