fossils in the mudstones at Berrara

Muy interesante.

Saludos desde Venezuela.

Lo invitamos visitar: Un fósil de ave?

Atte. Miguel Angel

Really great photo. But can you tell me something about the size of the fossils? Have you any scale? Greeting Bea

V. similar to widespread fossils of permian molluscs found on exposed coastal rocks in this area (cf: Black Head, Gerroa; dragonfly pt., Durras). Maybe a crinoid in the lower left of view?

Not more than 5cm length to the specis above, I would reckon, but I'm happy to be corrected.

Thanks Miguel, leBea and Mattymeishke.

They are indeed Permian, from the lowest beds of the Sydney Basin. The fossils are mainly of brachiopods, not the molluscan bivalves that they resemble (but to which they aren't related). Bivalves are symmetrical along the suture (where the shells separate), brachiopods are symmetrical perpendicular to the suture. The shell with the long straight edge, about middle of the lower part of the picture, is about 5cm long (well guessed!) based on the next photo I took which has a finger for scale.

The lower left corner is also brachiopod, but one without an ornate shell. There aren't any crinoids in this outcrop that I saw, but a number of different bryozoans (look like flat cards full of perforations).

Cheers, Greg

Thanks for information, Greg! Bea

i like!greetings from Argentina.