Hallirhoidae Temporal range:
Cretaceous -
Eocene
| |
---|---|
Various Cretaceous Hallirhoiids | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Porifera |
Class: | Demospongiae |
Subclass: | Heteroscleromorpha |
Family: | † Hallirhoidae |
Genera | |
Hallirhoidae is an extinct family of heteroscleromorph demosponges found throughout the world from the Cretaceous to the Eocene, whereupon they became extinct. [1] The highest concentration of species occurred in the Tethys Ocean during the upper Cretaceous. The hallirhoid demosponges were very distinctive-looking, largely pear-shaped sponges that were attached to the seafloor by a long stem-like stalk. [2] [3]
Hallirhoidae Temporal range:
Cretaceous -
Eocene
| |
---|---|
Various Cretaceous Hallirhoiids | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Porifera |
Class: | Demospongiae |
Subclass: | Heteroscleromorpha |
Family: | † Hallirhoidae |
Genera | |
Hallirhoidae is an extinct family of heteroscleromorph demosponges found throughout the world from the Cretaceous to the Eocene, whereupon they became extinct. [1] The highest concentration of species occurred in the Tethys Ocean during the upper Cretaceous. The hallirhoid demosponges were very distinctive-looking, largely pear-shaped sponges that were attached to the seafloor by a long stem-like stalk. [2] [3]