Yorktown formation zone 1 Homepage › Forums › What Is It? › Yorktown formation zone 1 Tagged: early pliocene, Miocene, yorktown formation This topic has 4 replies, 3 voices, and was last updated 3 years, 1 month ago by Hunter Thurmond. Viewing 5 posts - 1 through 5 (of 5 total) Author Posts February 24, 2018 at 12:16 am #30781 Hunter ThurmondParticipant I found this washed up around shells of the yorktown formation zone 1 which is late miocene to early pliocene I think, anyone know what it is? Attachments:You must be logged in to view attached files. February 24, 2018 at 6:18 pm #30785 Jack KallmeyerModerator @hunter-thurmond Poop! It looks like a fecal string to me. I found crap like that (pun intended) in my screenings at Venice Beach years ago. Jack February 24, 2018 at 7:27 pm #30786 Hunter ThurmondParticipant Thats cool! Thanks for the id April 27, 2018 at 1:01 pm #35522 Evan WalshParticipant Might be a negative mold of a worm burrow, but I think coprolite is equally likley May 1, 2018 at 1:10 pm #35634 Hunter ThurmondParticipant It also resembles internal molds of turritella sp. but they are more tightly coiled. Were there any Miocene mollusks with super thick coiled shells or gaps in the coil? Author Posts Viewing 5 posts - 1 through 5 (of 5 total) You must be logged in to reply to this topic.