Bilaterian Simple Definition
The most notable exception.
Bilaterian simple definition. What does bilaterian mean. This lineage lacks key bilaterian features and if it truly does reside within the bilaterian family many of the features listed above are no longer common to all bilateria. Nearly all are bilaterally symmetrical as adults as well. Information and translations of bilaterian in the most comprehensive dictionary definitions resource on the web.
An animal having bilateral symmetry scientists refer to animals including humans with this two sided symmetry as bilaterians. The bilateria ˌ b aɪ l ə ˈ t ɪər i ə or bilaterians are animals with bilateral symmetry as an embryo i e. Bilaterian plural bilaterians zoology any animal that has bilateral symmetry collectively grouped in the clade bilateria. Further the bilaterian clade has recently been expanded to include the acoelomorphs a group of relatively simple flatworms.
Having a left and a right side that are mirror images of each other. This also means they have a head and a tail anterior posterior axis as well as a belly and a back ventral dorsal axis.