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Canadia

From Wikipedia, the free encyclopedia

Wikipedia:How to read a taxobox
How to read a taxobox
Canadia
Fossil range: Cambrian
Canadia spinosa
Canadia spinosa
Conservation status
Extinct (fossil)
Scientific classification
Kingdom: Animalia
Phylum: Annelida
Class: Polychaeta
Order: Phyllodocomorpha
Genus: Canadia

Canadia is an extinct polychaete annelid known from fossils found in the Burgess Shale formation of British Columbia.

Averaging about 30 millimeters in length, Canadia is one of the most photogenic of the Burgess Shale fossils. The head bore a pair of slender tentacles while the body was covered with innumerable setae (short bristles). The gut could be everted anteriorly to form a feeding proboscis. Sediment has never been found in the gut, suggesting that this worm may have been a carnivore or scavenger. It is believed Canadia used its limbs to walk on the substrate or swim just above it. It may have utilized the stiff bristles on its body as paddles. These bristles could have been spread apart to swim and clumped together to slow down.

The name of the one described species, Canadia spinosa, means "spiny, or thorny Canadian". One hundred and ninety specimens are known from the Burgess Shale.

Hallucigenia sparsa, now considered to be member of the taxon lobopodia, was originally described as being a member of this genus, until Simon Conway Morris recognized it as not being a polychaete.


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aa - ab - af - ak - als - am - an - ang - ar - arc - as - ast - av - ay - az - ba - bar - bat_smg - bcl - be - be_x_old - bg - bh - bi - bm - bn - bo - bpy - br - bs - bug - bxr - ca - cbk_zam - cdo - ce - ceb - ch - cho - chr - chy - co - cr - crh - cs - csb - cu - cv - cy - da - de - diq - dsb - dv - dz - ee - el - eml - eo - es - et - eu - ext - fa - ff - fi - fiu_vro - fj - fo - fr - frp - fur - fy - ga - gan - gd - gl - glk - gn - got - gu - gv - ha - hak - haw - he - hi - hif - ho - hr - hsb - ht - hu - hy - hz - ia - id - ie - ig - ii - ik - ilo - io - is - it - iu - ja - jbo - jv - ka - kaa - kab - kg - ki - kj - kk - kl - km - kn - ko - kr - ks - ksh - ku - kv - kw - ky - la - lad - lb - lbe - lg - li - lij - lmo - ln - lo - lt - lv - map_bms - mdf - mg - mh - mi - mk - ml - mn - mo - mr - mt - mus - my - myv - mzn - na - nah - nap - nds - nds_nl - ne - new - ng - nl - nn - no - nov - nrm - nv - ny - oc - om - or - os - pa - pag - pam - pap - pdc - pi - pih - pl - pms - ps - pt - qu - quality - rm - rmy - rn - ro - roa_rup - roa_tara - ru - rw - sa - sah - sc - scn - sco - sd - se - sg - sh - si - simple - sk - sl - sm - sn - so - sr - srn - ss - st - stq - su - sv - sw - szl - ta - te - tet - tg - th - ti - tk - tl - tlh - tn - to - tpi - tr - ts - tt - tum - tw - ty - udm - ug - uk - ur - uz - ve - vec - vi - vls - vo - wa - war - wo - wuu - xal - xh - yi - yo - za - zea - zh - zh_classical - zh_min_nan - zh_yue - zu