Saturday, September 28, 2019

Yellow Ammonite Fossils

In the previous post, I wrote about a visit to Sant Ignazio Roman Catholic Cathedral in Rome, Italy. I found some ammonite fossils in the floor slabs. The last post was about the red fossils, this one is about the yellow ones. I believe this yellow stone is referred to as Ammonitico Giallo. Fossils from this layer are from the Jurassic Period.

Under the crest is some text embedded in the stone, it looks like roman numerals MDCCXLVII which convert to 1747 in decimal. If that is the year of installation then 272 years ago as of this writing.

On the Internet is a waymarking web site that documented this find. They are similar to the ones I found at St. Peter's Basilica in Rome.