Takakkawia
| Takakkawia Temporal range:
| |
|---|---|
| |
| Reconstruction of Takakkawia lineata | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Porifera |
| Class: | Demospongiae |
| Order: | †Protomonaxonida |
| Family: | †Takakkawiidae |
| Genus: | †Takakkawia Walcott, 1920 |
| Species | |
| |
Takakkawia is a genus of sponge in the order Protomonaxonida and the family Takakkawiidae. It is known from the Middle Cambrian Burgess Shale that reached around 4 cm in height.[1] Its structure comprises four columns of multi-rayed, organic spicules (perhaps originally calcareous or siliceous) that align to form flanges.[2] The spicules form blade-like structures, ornamented with concentric rings.[2]
It was named by Walcott after the Takakkaw falls which mark the start of the trail to Fossil Ridge.[3] Template:Gpb abundance
References
- ^ Botting, J. (November–December 2007). "'Cambrian' demosponges in the Ordovician of Morocco: Insights into the early evolutionary history of sponges". Geobios. 40 (6): 737–748. doi:10.1016/j.geobios.2007.02.006.
- ^ a b Botting, J. P.; Jin, J. (2012). "Reassessment of the problematic Burgess Shale spongeTakakkawia lineataWalcott, 1920". Canadian Journal of Earth Sciences. 49 (9): 1087. doi:10.1139/e2012-046.
- ^ J.J. Sepkoski, D. Jablonski & M. Foote (2002). "A compendium of fossil marine animal genera".
{{cite journal}}: Cite journal requires|journal=(help)
External links
- Burgess Shale species 120
- Image of fossil from the Peabody Museum of Natural History
- Takakkawia at fossilworks
 | This article related to a Cambrian animal is a stub. You can help Wikipedia by expanding it. |
 | This prehistoric sponge article is a stub. You can help Wikipedia by expanding it. |
.jpg){kind=small} | This article about a demosponge is a stub. You can help Wikipedia by expanding it. |