Marsupiobothrium gobelinus is a tapeworm with an unknown taxonomic affinity.

It can easily be distinguished from the other members of its family by its bothridial peduncles, longer in comparison to other family members. Its lacks arcuate cylindrical pads on the posterior bothridial margins. The tapeworm has a marginal, distinct apical scolex rather than a submarginal, diffuse apical sucker on each bothridium.

This species was first described (along with Litobothrium amsichensis

Litobothrium amsichensis

Litobothrium amsichensis is a tapeworm from the family Litobothridae.This species was first described from a specimen collected from the spiral valve digestive organ of a goblin shark caught in New South Wales in Australia....

) from a specimen collected from the spiral valve

Spiral valve

A spiral valve is the lower portion of the intestine of some sharks, rays, skates and bichirs. A modification of the ileum, the spiral valve is internally twisted or coiled to increase the surface area of the intestine, to increase nutrient absorption....

 digestive organ of a goblin shark

Goblin shark

The goblin shark, Mitsukurina owstoni, is a deep-sea shark, the sole living species in the family Mitsukurinidae. The most distinctive characteristic of the goblin shark is the unusual shape of its head. It has a long, trowel-shaped, beak-like rostrum or snout, much longer than other sharks' snouts...

 (Mitsukurina owstoni) caught in New South Wales

New South Wales

New South Wales is a state of :Australia, located in the east of the country. It is bordered by Queensland, Victoria and South Australia to the north, south and west respectively. To the east, the state is bordered by the Tasman Sea, which forms part of the Pacific Ocean. New South Wales...

 in Australia

Australia

Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

.