hello my name is not jeff Known colloquially as "The ironing-board shark" due to the large- ironing-boards shaped fin on its back, Stethacanthus was an early shark that behaved much like modern reef sharks. It was alive 370-345 million years ago, and ranged from 70 centimetres to 2 metres in length. No-one knows what the ironing-board shaped fin was used for, though some speculate it may have been a way of attracting females, or scaring larger predators.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.