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Wondering if this may be a fossil and where to send it off for identification

Hello My first post, Nice to meet you all, in advance. I am an amateur geology enthusiast/fossil hunter. Purely as a hobby and for my personal enjoyment. I found this stone in a very unusual place, stuck in the tire of a piece of construction equipment in The Netherlands close to Rotterdam. Pure random chance. Not where I would normally hunt. Unfortunately, this piece of mobile equipement could be used all over the country so it is impossible to say exactly what its origins are. It looks to me, to be a piece of shale or oil shale that has spent a considerable amount of time in the sea, as it is smooth and well rounded. I noticed the shell cast right away, but after I got it home, cleaned it up and examined it under light and magnification, I noticed something very curious. What looks to be some sort of fossilized/crystallized (?) insectoid. In the photos, you will see what looks to be some sort of insect abdomen, larva or pupa (plant seed?) along with some other interesting things I noticed that I thought might help with identification. Please see the photos. I have added notes to them. It is approximately 2.5 mm long. Under direct light and magnification it appears to have a green hue and translucence. Next to the "insectoid-looking-thingy" is a curious round cast (?) form. Crinoid, perhaps? It is approximately 3 mm below (downhill) from the insectoid-looking-thingy. The stone is black with, what I believe to be, quartz inclusions and possibly (always a tough call) extremely small bits of fossil material. Thanks in advance for your input. Looking forward to future collaborations and shares. Have a nice day