Globally Extinct: Worms

Lake Pedder EarthwormThe term worm is currently used to describe many different distantly-related animals which have a long cylindrical body and no legs, like the segmented worms, flatworms, roundworms, velvet worms, etc. The IUCN Red List of Threatened Species (Version 2011.1) has listed 2 worm species as extinct and none subspecies (IUCN 2011). This page features 2 extinct segmented worm species (Annalida) and 1 extinct flatworm species (Platyhelminthes).

Image: Reconstruction of the Lake Pedder Earthworm. Based on an image from Threatened Species Unit (2000). Created by Peter Maas for The Sixth Extinction website. This image is licensed under the Creative Commons Attribution Non-commercial No Derivatives 3.0 licence.

Do you know any species or subspecies that should be added to this list or has been rediscoverd? If so, please contact this website.


Segmented Worms (Annelida)

The subjoined table shows the segmented worm species and subspecies that recently became globally extinct.

Species (2) / Subspecies (0)
Scientific Name Common Name TSEW Status IUCN Status
Hypolimnus pedderensis Lake Pedder Earthworm EX EX
Rhinodrilus fafner Giant Brazilian Earthworm EX NE
The Giant Brazilian Earthworm (Rhinodrilus fafner) is an extinct giant earthworm from the family Glossoscolecidae. It is only known by the ill-preserved holotype discovered and described in 1918 by German zoologist Wilhelm Michaelsen from the National History Museum in Hamburg. It was found near Belo Horizonte in the Brazilian state of Minas Gerais. The collected individual has a length of 210 centimetre and the body which consists of 600 single segments is 24 millimetre in diameter. Besides the Giant Gippsland Earthworm (Megascolides australis) from Australia, the Giant Brazilian Earthworm is among the largest known giant earthworms. The Giant Brazilian Earthwormwas confined to a small habitat and vanished possibly due to habitat destruction. It was officially declared extinct by the Brazilian Ministry of Environment (MMA) in 2003. (Wikipedia contributors, 2009)


Flatworms (Platyhelminthes)

The subjoined table shows the flatworm species and subspecies that recently became globally extinct.

Species (1) / Subspecies (0)
Scientific Name Common Name TSEW Status IUCN Status
Romankenkius pedderensis Lake Pedder Planarian EX EX



IUCN (2011). IUCN Red List of Threatened Species. Version 2011.1. <>. Downloaded on 25 June 2011.

Threatened Species Unit (2000). Listing Statement Lake Pedder Earthworm Diporochaeta pedderensis. Nature Conservation Branch, Department of Primary Industry, Water and Environment, Tasmania.

Wikipedia contributors (2009), "Rhinodrilus fafner," Wikipedia, The Free Encyclopedia, (accessed March 7, 2009).


Citation: Maas, P.H.J. (2011). Globally Extinct: Worms. In: TSEW (). The Sixth Extinction Website. <>. Downloaded on .
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Updated: 25 June 2011


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