|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Palaeoscolecida - Cricocosmida - Palaeoscolecidae
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
|S.-X. Hu et al. 2008||Body small, cylindrical in outline, consisting of introvert and trunk. Introvert as wide as trunk, armed by stout scalids. Everted pharynx extends byong from introvert and oranmented by dense pharyngeal teech. Trunk finely annulated. Three rows of plates spaced on the surface of each annulation. Plates round, equal in size, approximately 30 micron in diameter, with a circle of 9-10 marginal nodes and 4-5 central nodes. Intestine straight, running from pharynx to the end of body. A pair of hooks present at the posterior end of trunk.|