Jimbacrinus – a 5-armed crinoid

(jim-bah-cry-nuss)

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Model of Jimbacrinus bostocki.
Image: Jon Augier
Source: Museum Victoria

Fossil of Jimbacrinus bostocki.
Image: Jon Augier
Source: Museum Victoria

Permian

HOW BIG IT WAS

Jimbacrinus relative size depiction as described below
Jimbacrinus was approximately 25 cm tall.

Jimbacrinus had five arms which were lined with fine tentacle-like structures called pinnules. Like all crinoids, it used these unfurled arms to feed on small animals and particles in the water.

Fossils of Jimbacrinus show that they were abundant seafloor animals in what is now Western Australia during the Permian.

WHERE IT WAS FOUND

Jimbacrinus map

This fossil of Jimbacrinus bostocki was discovered in Western Australia.

RELATED OBJECTS

Other objects from the Permian

ProetidsPalaeodictyopteridEotitanosuchusParalegocerasHelicoprionGlacial pebbles
Photograph of a yellow plastic Tyranasaurus Rex