So I lost the little tag right away. I knew it was some kind of squash by the shape of the leaves, but it wasn't until I had a chance to compare mine to Google photos, that I found a match!
Here's more info:
Here is a link that might be useful: Kabocha squash
Looks about like the Cha-Cha Kabocha that should be in my garden right now, b2Alicia!
My winter squash had a seriously "ragged" start. It might have been just as well that I forgot to order any seed.
I might have to eat the jack o'lantern this year!!