Annelida

AnnelidaHanzhi Fang 100092540Kaihao Yang 100098534Muchuan Sun 100100436

introductionClassification of AnnelidaDescription Ecological significanceInteraction with humansFossils

Classification of AnnelidaKingdom:AnimaliaSuperphylum: LophtrochozoaPhylum:Annelida

Features of annelida

Description

SegmentationMost of an annelid's body consists of segments that are practically identical, having the same sets of internal organs and hair.

reparationSelf repair

Reproduction Sexual or without sexual

Ecological significancePlay an important role in the food chain.It is an important part in the ecosystem.

Interaction with humansImprove soil fertility and increases crop productionTo be used for medical

As food sources for poultry and aquaculture

As a traditional food in some countries

FossilsVery rare fossils, due to the fact that Annelidas are soft-bodies animals.

The small shell fossil Cloudina, from 549to542 million years ago, has been classified by some authors as an Annelide, but by others as a cnidarian (i.e. in the phylum to which jellyfish and sea anemones belong).2008---the earliest fossils widely accepted as annelids

Family Tree

Thank youHanzhi Fang 100092540Kaihao Yang 100098534Muchuan Sun 100100436SourcesRouse, G. (1998). "The Annelida and their close relatives". In Anderson, D.T.. Invertebrate Zoology. Oxford University Press. p.202. ISBN0-19-551368-1.A group of worms classified by some as polychaetes and by others as clitellates, see Rouse & Fauchald (1997) "Cladistics and polychaeteshttp://www.biodiversityexplorer.org/mm/annelids/index.htmhttp://www.ucmp.berkeley.edu/annelida/annelidalh.html