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Showing results for tags 'pydium'.
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Ever since I first got my Scabriscutellum sp. I've felt like something was off with the pydium but could never place it. That is until today. I realised that the pydium on my trilobite was inverted as opposed to most pictures I've seen. By that I mean the lines along the pydium (sorry I don't know the technical term, if anyone wants to enlighten me that would be appreciated) which appear to be raised in most photos are depressed. Here's a picture of a "normal" scabriscutellum. (Hopefully you can tell what I'm on about.) As you can see raised lines along the pydium. However here's a picture of my scabriscutellum. As you can see quite the opposite. I'm curious is this some sort of pathology, differing species or sign of fakery? Here's where it gets interesting, circled in red are a few of several discolored spots where the shell seems to be missing. When I first noticed these I thought perhaps plastic, that the ends of the spines had broken off and replaced with painted plastic. However a hot needle test proves these spots are not plastic. Also interesting, there are what look like air bubbles in the matrix which I am 100% positive is real rock and not resin. (Result of volcanic activity maybe?) Today though I also found pictures of another scabriscutellum with the weird tail and it also has the discoloration. I'm honestly a bit confused and a lot curious any opinions are appreciated.
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- mineral replacement
- pydium
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