Praecambridium
| Praecambridium Temporal range: Late Ediacaran, around | |
|---|---|
| Artist's restoration of P. sigillum | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | †Proarticulata |
| Class: | †Cephalozoa |
| Family: | †Yorgiidae (?) |
| Genus: | †Praecambridium Glaessner & Wade, 1966 |
| Species: | †P. sigillum |
| Binomial name | |
| †Praecambridium sigillum Glaessner and Wade, 1966 | |
Praecambridium sigillum is an extinct organism that superficially resembles a segmented trilobite-like arthropod. It was originally described as being a trilobite-like arthropod, though the majority of experts now place it within the Proarticulata as a close relative of the much larger Yorgia. It is from the Late Ediacaran deposit of Ediacara Hills, Australia, about 555 million years ago. On average, P. sigillum had at least 5 pairs of segments, with each unit becoming progressively larger as they approach the cephalon-like head.