Though he also worked in the study of Tunicates and Polychaetes, Michaelsen was best known for his work on Oligochaeta.
12.
The Hilsenhoff Pollution Tolerance Score of these microinvertebrates range from 0 ( with two species ) to 10 ( with Oligochaeta ).
13.
The Hilsenhoff Pollution Tolerance Score of these microinvertebrates range from 0 in two cases to 9 in Turbellaria and 10 in Oligochaeta.
14.
Given that the other clitellatan annelids are embedded between and around the Haplotaxida and Lumbriculida, the traditional Oligochaeta are a paraphyletic assemblage.
15.
The diversity of worms ( Nematoda, Oligochaeta ), snails ( Mollusca ) and seed shrimps ( Ostracoda ) has not been studied.
16.
Some marine oligochaeta ( e . g ., Olavius or Inanidrillus ) have obligate extracellular endosymbionts that fill the entire body of their host.
17.
Another possibility would be to include the leeches in the taxon Oligochaeta, which would then be ranked as a class and contain most of the clitellates.
18.
"Earthworm " is the common name for the largest members of Oligochaeta ( which is either a class or a subclass depending on the author ).
19.
Samples of bottom fauna near the palace in 1994 documented an abundance of species of Oligochaeta, including a new species, " Fridirica ulrikae ".
20.
A 1940 report mentioned several worms like Nematodes, Archiannelida, Oligochaeta and Turbellaria, crustaceans like ostracods, and ciliate protozoans in the sands of the Kniepsand beach.