Looks like a worm shell (family Vermetidae) that had cemented itself to a beach rock. I don’t see any mineralization, for example the inside of the shell is nice and shiny and the shell looks white and porous. It is therefore probably not a fossil.

Looks like botryoidal chalcedony. Its possible botryoidal quartz can be from inside a fossil, such as in some fossilized corals, or it could have been formed in an inorganic process.

Hi @smoran, would you be able to identify this? When I was at Ernst Quarries, someone thought it might be an ancestral toothed whale but I’m not a vertebrate person at all.

@smoran & @jbauer I think I meant genus Cyrtina, but I most likely accidentally selected Cyrtospirifer when I entered it into the classification wizard. The basis for selecting Cyrtina is the reference I have for this locality is The Stratigraphy and Fauna of the Hackberry Stage of the Upper Devonian by Fenton and Fenton, 1924. In this…[Read more]

It appears it is in water from the glare off the surface of water in the picture. Is that live coral? In which case, it is not a fossil. Also, corals are threatened all over the world and I do not believe it is ethical to collect live specimens for personal use. There are also federal and state regulations regarding the collection of coral…[Read more]

Thats a brachiopod, most likely in the order Spiriferida.

@smoran Updated as well.

@smoran Classification updated. I guess we can thank our friend Austin for reorganizing that one.

@smoran I’ve updated the classification and was able to identify it further using this paper: https://www.jstor.org/stable/1303027?seq=1#metadata_info_tab_contents

Squalicorax sp. Not an arthropod by the way. If you post to the shocking shark teeth group you might find a more specific ID.

@smoran Updated with new classification. Sounds like GBIF needs to up their game..

@smoran & @jbauer I believe this is an internal mold, I could not find any traces of shell material. I uploaded another specimen that still had traces of shell, but it was unfortunately incomplete. In the literature for this locality I could find, Hemiaster californicus was the only identified echinoid. (https://www.jstor.org/stable/1304314?seq=1)

Looks like a worn heart urchin, Spatangoida.

@samantha-ocon Its difficult to tell the difference between Rafinesquina and Strophomena in the Dry Dredgers pictures. The Ordovician Atlas lists internal characteristics that are not visible in this specimen. The interior of the valve is cemented with a hard matrix and my air scribe and air blaster can’t really break through without damaging the…[Read more]

@bill-heim Updated the classification. Thanks!

@samantha-ocon I couldn’t find many pictures but it looks like Devonoproductus walcotti

@samantha-ocon That’s a very helpful website, it looks like it could be Glyptorthis.