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Ryann10006 posted a topic in Fossil IDHello everyone, I am in desperate need of help with a huge debate I have been having with a friend over fossils preserved in ironstone concretions. From some of what I had read to some advice from other members I it possible to find vertebrate bone among shells and other mollusks preserved in an ironstone concretion. Whether it leaves a trace of the organism, morphs the organic material into the structure of the iron concretion through the decomposition with preserving, or whatever else it may be it seems to be possible. So recently I have hunted a place known to have recorded marine cretaceous shell and other mollusk found in ironstone concretion as well as cretaceous plants in shale, it seems like not to vast of enough study has been done there only from what I know, but since no vertebrate material had yet been discovered there though there can maybe be the possibility. I found these two particularly distinct pieces in iron concretions that exactly mimic the scute structure of soft shell turtle and croc in my opinion, I know how iron concretions are famous for leaving psuedofossils and such but these two pieces look way to exact and since its possible for shells and mollusks to preserve why not scutes? So I am here looking to end this debate, I'm looking for your opinion, can these be labeled as fossils, traces, etc? Or are these among some of the world's best iron concretions and nothing more. Your input especially if you are very experience in this subject would be tremendously appreciated.
I've purchased 'The Mazon Creek Fossil Fauna' by Jack Wittry, and have been fascinated, and nearly overwhelmed, by the wealth of information presented. With the great descriptions and photography, I've been able to identify quite a number of pieces in my collection, but it has been difficult for many of the specimens. I'm certain that this is the normal course of education that most of you have undergone over a period of years, and I'm sure that experience and familiarity will help. I'm requesting your help with identification on some of the more difficult pieces I've run into so far. The first one may simply be a seed pod or some other type of flora that wouldn't have been in the book, but on the chance it might be a coprolite, I'm asking for help: There are two 'pods' in the concretion. Each measures approximately 3/16" x 5/16". The photos are of the positive and negative of one of the pods. Second image in next post.