Offacolidae
| Offacolidae Temporal range:
| |
|---|---|
| File:20200810 Offacolus kingi.png | |
| Restoration of Offacolus | |
| Scientific classification Edit this classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Chelicerata |
| Clade: | Euchelicerata |
| Family: | †Offacolidae Sutton et al., 2002 |
| Type species | |
| †Offacolus kingi Orr et al., 2000
| |
| Genera | |
Offacolidae is a family of basal euchelicerate arthropods from the Ordovician and Silurian of Europe, Morocco and North America.[1][2] The family is united by several features, including paddle-like sixth post-cheliceral appendages, elongated chelicerae, and reduced first tergites, although these are apparently not unique to the clade, but instead euchelicerate or wider synapomorphies, therefore making the clade paraphyletic. Alongside this, Offacolus may be more basal than the rest of the clade, as its seventh exopod pair is unreduced and it has a bipartite telson, among other features.[citation needed] They share with most other euchelicerates a wide carapace, which has led to them being placed in the paraphyletic “Synziphosurina” for a long time, however more detailed studies have led to them being separated.[3]
References
[edit | edit source]- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
Lua error in Module:Taxonbar at line 165: attempt to index field 'wikibase' (a nil value).
