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This I found on west coast south island NZ,near hokitika,any ideas?

Hello everyone! Thanks again to everyone who helped ID my last fossil (phyllocarid mandible) that had me confused. The weather is horrible in New York so I’m indoor fossil hunting haha (organizing old finds). I have another fossil here that I am pretty much stumped on as well. I’ve had it for several years....it’s something unknown to me. This came from Buffalo area in New York. I sadly don’t remember all the specifics of this find other than I most likely collected this from the Tichenor Limestone. I know for sure it’s from the Hamilton Group of western New York. Interesting looking “exoskeleton” type of fossil. Small only about 20-22mm (.75-.8 inches) give or take. Odd V shaped specimen and I don’t know if that’s the morphology or if it’s something folded...the would be “hinge” or “point” is gone to give me a clue. It has really nice orderly lines running along it and a “knob” on the longer side. Almost like an armor plate or somthing. I thought maybe plant material but it seems like preserved “hard parts” to me. I included a picture of the back of the limestone as it has a possible associated fossil also unknown to me....also “exoskeleton like” in appearance. I wish I knew more exact specifics of how and when I collected it but I hope the information I gave and pictures will be enough. Thanks, Al

Hey everyone, Ive had this odd fossil for years and I do not know what it is. It’s from the Hamilton group, more specifically the lower Wanakah shale, Lake Erie shore Buffalo New York. I have a pic from a great publication I bought (got it in the mail today!) that shows a really great close up of the stratigraphic interval I found it in (Miller year?) it came from one of the 4 trilo beds, I think the top one. I rediscovered it while going through and organizing some old fossils. Now that I’ve joined the forum I have access to more resources! This fossil is 19mm (.75in) long....the length matches the diameter of a US penny. It appears segmented (4 segments) and I actually had to glue 2 segments back together. Each end segments have a peak of some sort. One end has a tall single peak and the other end has a segment with a double peak (but much smaller peaks than the tall single peak on the opposite side). The middle segments are more rounded. The fossil itself seems like remains you would see with trilobites.....that black colored exoskeleton remain on one side and shale on the other but I don’t think it’s a trilo. It just seems like it persevered in a similar way so I think it’s the remains of something “hard” made of calcium carbonate but idk what. I cant even guess.....I only had Grabau’s geology of 18 mile creek book for reference and I don’t see a match. Maybe I just don’t have the access to the paper/book describing this or I do and don’t know it. My guesses (not confident guesses lol) consist of.....conodont? Placoderm? Coprolite? Lump of nothing? Tooth of some kind? Thanks for reading and thank you to anyone that tries to ID this! Al