Kootenichela

Kootenichela
Temporal range: Middle Cambrian
Reconstruction of K. deppi as megacheiran, which is questioned in subsequent studies
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: incertae sedis
Family: †Kootenichelidae
Genus: †Kootenichela
Legg, 2013
Species:
†K. deppi
Binomial name
†Kootenichela deppi
Legg, 2013

Kootenichela deppi is an extinct arthropod described from the Middle Cambrian of the Kootenay National Park, Canada. It is originally considered to be a member of "great appendage arthropods",[1] although subsequent studies questioned its affinity.[2][3] Kootenichela appears to be the sister taxon of Worthenella, from cladistic analysis.[1]

The species name deppi comes from the actor Johnny Depp, after his role as Edward Scissorhands in the film of the same name. David Legg, the discoverer of Kootenichela, said:

"When I first saw the pair of isolated claws in the fossil records of this species I could not help but think of Edward Scissorhands. Even the genus name, Kootenichela, includes the reference to this film as 'chela' is Latin for claws or scissors. In truth, I am also a bit of a Depp fan and so what better way to honour the man than to immortalise him as an ancient creature that once roamed the sea?"[4]

Kootenichela appears to be a primitive arthropod. It has an elongated body composed of at least 29 segments of similar shape and appearance. On the head, there are large eyes supported by stalks and an appendage resembling an antenna.[1] The appendages bound to the trunk are poorly sclerotised. It was approximately 4 centimetres (1.6 in) long.[4] Most prominent are the claw-like, spinose cephalic appendages, which seem to suggest affinities with Megacheira, the "great appendage" arthropods.[1] However, study in 2015 researchers could confirm neither the head configuration nor the megacheiran interpretation of the anatomy.[2] Kootenichela has been subsequently suggested to be a chimera of various arthropods such as a bivalved arthropod.[3]

  1. ^ a b c d David Legg (2013). "Multi-segmented arthropods from the Middle Cambrian of British Columbia (Canada)". Journal of Paleontology. 87 (3): 493–501. Bibcode:2013JPal...87..493L. doi:10.1666/12-112.1. S2CID 86725173.
  2. ^ a b Aria, Cédric; Caron, Jean-Bernard (2015-06-03). "Cephalic and Limb Anatomy of a New Isoxyid from the Burgess Shale and the Role of "Stem Bivalved Arthropods" in the Disparity of the Frontalmost Appendage". PLOS ONE. 10 (6): e0124979. Bibcode:2015PLoSO..1024979A. doi:10.1371/journal.pone.0124979. ISSN 1932-6203. PMC 4454494. PMID 26038846.
  3. ^ a b Aria, Cédric; Zhao, Fangchen; Zeng, Han; Guo, Jin; Zhu, Maoyan (December 2020). "Fossils from South China redefine the ancestral euarthropod body plan". BMC Evolutionary Biology. 20 (1): 4. Bibcode:2020BMCEE..20....4A. doi:10.1186/s12862-019-1560-7. ISSN 1471-2148. PMC 6950928. PMID 31914921.
  4. ^ a b Colin Smith (16 May 2013). "Actor Johnny Depp immortalised in ancient fossil find". Imperial College London. Retrieved 16 May 2013.