Thectardis
| Thectardis Temporal range: Ediacaran, | |
|---|---|
| Artist's reconstruction | |
| Scientific classification | |
| Kingdom: | Animalia (?) |
| Phylum: | |
| Genus: | †Thectardis Clapham et al., 2004 |
| Species: | †T. avalonensis |
| Binomial name | |
| †Thectardis avalonensis Clapham et al., 2004 | |
Thectardis avalonensis is a triangular-shaped member of the Ediacaran biota, dating from 574 to 565 million years ago. The organism took the form of an elongated cone with a central depression, and its apex was anchored to the substrate. Sperling et al. (2011) suggest that Thectardis was a sponge, while Antcliffe et al. (2014, 2015) instead suggest that it is the decayed remains of rangeomorphs.