Search the Community

hi all, during our hike along the west-coast of the Algarve in Portugal (see Fishermens trail), we noticed many sites with fossils. So we got interested and spent some time looking at the remains in the rocks. One. of them got my special interest as it seems to have something like a mouth. I am a real amateur and can only recognise a few common types of fossils, like sea shells, coral, sea urchins, shark teeth, etc. So who can help identify this plant/animal? thanks! Some background information: the rock is limestone based on the fossil coral, the rock is a former sea-bed of a shallow sea. age: "Kimmeridgian, upper-Jurassic". I found the following w.r.t. the history of the rock (see 2nd image): " On the top of the cliff, there are limestones and marls of Kimmeridgian age (Upper Ju- rassic), with a rich fauna of well conserved fossil corals " Sorry, I didn't have a cm-scale with me, so my finger nail is the only reference of the dimensions; the nail is 1cm in length.

I’m new here, but have always been fascinated with rocks and fossils. My daughter is too, so I’m looking to do this as a hobby with her..but I digress. I was recently at an estate sale and picked up what I thought at first was a concretion and took it home. My close up vision is failing me, so when I put this under a big magnifying glass, I was amazed by all the details in this little 3”x3” piece. What can you tell me about all these little creatures? Any idea how old it might be? I want to share all the details with my daughter, so by all means…explain, please and thank you!

these were found at a chalk-based cretaceous seabed in Starkville, MS...Both 10-15 mm in diameter... any idea what they are? one is cone-shaped, the other is flat on top and bottom... on the second fossil, one side has fanned lines stemming from the center bottom whereas the other side has straight lines

I found this in the San Diego area, it is heavy, 6 lbs. size is 7" x 5" x 7". I was told it is around 5 million years old. can any one please give me some information on age. is it rarity, collectability, exactly what it is? Thank You so much for your time Martin

Hi all, over a year ago, I found an enormous chunk of seabed mortality plate in an old Chinese mineral shop. Back then, I couldn't get any solid IDs on it, though it was suggested that the fossils on it were Nautiloids, and that meant it's probably from Zhongning Formation, Ningxia Hui locality. Here's some new high-res pics to hopefully shed some light on where it's from, and what fossils are on it.