Are These Fish Fossils?

[psaggu]

Hi Guys

I was just walking on the beach on Berry Island Reserve in North Sydney and saw these marks on the rock, Just wanted to check if they are fossils and if yes what are they?

Thanks

[Auspex]

Are you referring to these darker features?

They may be of organic origin, and if so would be fossils if they are older that 10,000 years.

More than that, I cannot say from the pictures. Do you know the age of the stratum?

[Fossildude19]

They look to me like carbonized plant bits.

Regards,

[Mediospirifer]

I thought they look like extremely weathered brachiopods, in cross-section. It does look like a hash of some sort.

[psaggu]

As per Australian Museum, "All of the fossils found near Sydney are from Triassic rocks around 240 million years old". - See more at: http://australianmuseum.net.au/Fossil-sites-near-Sydney/#sthash.cZiUzp1K.dpuf

Sorry guys if I am not being of much help, just a newbee in this field....

[Mr_ed]

That one doesn't look Triassic and the fossils look like plant bits as Auspex has stated.. maybe you could double check on the age.. could it have been misplaced?

Cheers

Ed