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The left one's different from the middle+right one, which are from the same rock but cut in half.
The ciricle one's the other hlaft of the left pic from the top post.
The last one's just for added deail and note that it does look a bit shiny and I'm sure it's not a drill bit since I boiled the rocks to open them.
Wow, Thanks Chrono! Looks like you have come up with three ceph-tastic fossiloids.
Looks like you've got a not only a belemnite there but a belemnite phragmocone too. The phragomocone is the thin conical chambered shell inside the body of the animal; in your mum's fossil it may be preserved in pyrites, hence its shiny nature. I've no idea what species the ammonite is though, I'm afraid.
Any idea whereabouts in Nepal they come from? Strange to think the mountainous Himalayan states used to be sea bed!
As a suggestion could the ammonite be Perisphinctes, perhaps? A quick Google search tells me that these are found in Nepal, and certainly the ribbing splits in a similar manner, though the ribs look a little tighter packed in your fossil. If it is, it would be mid Jurassic, somewhere about 155mya. Have a look at the attached photo to compare:
These just look like the nodules that, if I remember correctly, David Attenborough came up with, crawling through a ravine or a river bed in the Himalayas, filming for
"Lost worlds, vanished lives". Anyone seen it recently ?