Halkieria - Phylogenetic Position of Halkieria

Phylogenetic Position of Halkieria

Further information: Halwaxiid and Debate_about_Cambrian_Lophotrochozoans

The evolutionary relationships of the halkieriids are a complex topic which is still being debated. Most of this debate is about their relationship to Wiwaxia and to the three major lophotrochozoan phyla — molluscs, annelids and brachiopods. The question of their relationship to an apparently much more primitive Cambrian group, the chancelloriids is also significant and may raise some difficult questions.

Read more about this topic:  Halkieria

Famous quotes containing the word position:

    “The essence of spirit, he thought to himself, was to choose the thing which did not better one’s position but made it more perilous. That was why the world he knew was poor, for it insisted morality and caution were identical.”
    —Norman Mailer (b. 1923)