Trilo-bits

[minnbuckeye]

I just went through my bag of trilobits from this summer. Most are identified. I am getting better with time!!  Here are a few  Small pygidiums, all between 1 and 2 cm. These small non descript tails are hard for me to identify. If there are ones that stand out, let me know, and why you think so! That way I will know for next summer's specimens. They are numbered. 

 

 Thanks,

Mike

[Pumpkinhead]

Bumastoides?

[minnbuckeye]

@Pumpkinhead   That was my guess for #1, but normally the pygidiums for this species locally are 10x bigger! 
Are you saying Bumastoides for all?

[Pumpkinhead]

On 2/7/2019 at 7:18 PM, minnbuckeye said:

@Pumpkinhead   That was my guess for #1, but normally the pygidiums for this species locally are 10x bigger! 
Are you saying Bumastoides for all?

 

I'm not 100% certain, I was just going off of how effaced they are. I've seen some rather small ones though so from my experience the size is not implausible. If you don't mind telling me what the locality is I could try to find some references that could help

[minnbuckeye]

Platteville of SW Wisconsin

[piranha]

Juvenile trilobites are always smaller than adults.  They match well with the example from Midwest Paleo.