As many of you pointed out, this eggs beautifully demonstrates the filaments arising from the 2 poles of the inner membrane (arrow heads, below image). You can't make it out here, but there are 4-8 of these filaments arising from each pole. You can also nicely see the hooks of the 6-hooked oncosphere:
There once was a chap from Indiana
who with his cereal enjoyed a banana
but with the cereal he did eat
he received an unexpected treat
The cestode known as Hymenolepis nana!
If you do an internet search for "oatmeal" and "bugs," you will find multiple consumer complaints (and some nice YouTube videos) to explain the cereal reference.
Importantly, infection via ingestion of eggs shed in stool (autoinfection or from another person) is also possible, making this a common intestinal cestode infection worldwide.