Siphonia pyriformis, Print, Siphonia is a genus of extinct hallirhoid demosponges of the Upper Cretaceous, from about 125 to 66 million years ago. They lived in the Western Tethys Ocean, in what is now Europe.
Siphonia pyriformis, Print, Siphonia is a genus of extinct hallirhoid demosponges of the Upper Cretaceous, from about 125 to 66 million years ago. They lived in the Western Tethys Ocean, in what is now Europe.