Which type of large intestine worm was primarily studied by Ivan Mackerie?
Ivan Mackerle Ivan Mackerle (March 1942January 3, 2013) was a Czech cryptozoologist, author, design engineer, and explorer. He organized expeditions to search for the Loch Ness monster of Scotland, the Tasmanian tiger in Australia, and the elephant bird in Madagascar. He was most notable for his search of the Mongolian death worm, and he conducted three trips to Mongolia in 1990, 1992, and 2004. He authored numerous books and publications and from 1998 until 2002 he was chief editor of the Czech paranormal magazine "Fantastická fakta" ("Fantastic Facts").
Salvatoria pilkena Salvatoria pilkena is a species belonging to the phylum Annelida, a group known as the segmented worms. The species name comes from an Aboriginal word, "pilkena", meaning "different", due to its characteristic features. "Salvatoria pilkena" belongs to a reduced group of species that possess rugose dorsal cirri, contrary to the typical spindle-shaped cirri found in its genus. It also lacks dorsal cirri on chaetiger 2. It resembles "Salvatoria swedmarki" and "S. celiae", differing from "pilkena" in that the latter has significantly longer proventricles, while its compound chaetae are short and unidentate. At the same time, "S. opisthodentata" has a similar body and compound chaetae but appears to possess dorsal cirri on its chaetiger 2.