I like those, "How often do you beat your wife questions"
Anyway, it is all over Youtube and unfortunately in few instances critically reviewed.
Usually anomalies aren't considered because they constitute a small population and may constitute a dating error and may be subject to strata displacement which isn't all that atypical.
Anomalies found in coal deposits and solid stone are harder to explain.
For instances metal objects and spark plug looking devices.
What you're describing is ancient technological know-how. Ancient cultures had MUCH more technical ability than we give them credit for. For example, did you know that the first steam engine was built in ancient Rome in the 1st century AD? Da Vinci conceived of an airplane centuries before one was ever built. The building of the pyramids was a massive engineering feat.
Ancient civilizations had technologies that were lost over the centuries and that we've only just re-discovered in the past 200 years or so. So it's most likely that ancient humans are responsible for all the things you mentioned, simply by virtue of them being intelligent and inventive people. Remember, if not for the Dark Ages holding back scientific progress for around 800 years, we'd be a lot further along than we are now. Hell, we'd have had the Internet, cell phones, etc. sometime around 1200 AD! So I have no doubt that those people could build a sphere or conceive of a battery.
Cro-magnon had bigger brains and was taller. facially appear to be noble gracial. There is a lost city found off the Indian coast that goes back to the Wurm glaciation. There is evidence of trans-atlantic travel by certain tool industries, moustrian etc. There is a sunken city off the coast of Cuba in 2000 ft of water. Puma Punku may be similarly dated according to some authorities.
Your are correct Solutrean.
"Cro-magnon...was us, the label is not really used anymore."
I believe Hominids alive during the Mega fuana, perished with the Mega fuana.
Some believe an asteroid did it.
There appears to be several hominids contemporary with Cro-magnon.
Haploids that were present 9000 years ago in Europe appear to have vanished, and the population completely replaced.
Large stone balls are nothing strange, it happens in rocks all the time. These balls are known as concretions, they can be up to several meters across. They form often around fossils quite often, the fossil dissolves and cements the rock around it.
The smaller stone ball which dated to 2.8 billion years to me just indicates that the stone was old, perhaps 2.8 billion years old, and it was carved out of that. The blue metalic colour with white flecks reminds me of this http://www.astro.virginia.edu/class/oconnell/astr121/im/iron-meteor... iron meteorite, which of course if found it wouldn't be surprising if a culture made an artifact out of it...
Another option to how the "stitched balls" could have formed a concretion forming in the rock in a very thin layer of a different type of stone, a thin layer could be deposited by a major flood event or volcanic eruption which once the concretion has formed looks as if it is a stitched ball.
The images aren't high enough resolution for me to be able to conclude what the actual cause was.
The 65 million year old metal tubes are not that uncommon in rocks, I have seen them in several locations. It is simply the precipitation of iron around worm tubes or other trace fossils. A real test if these are human made or not would be to measure the manganese content, Mn is closely associated with iron in marine sediments. The nail mentioned in the text will just be a smaller of the same thing.
The spark plug is shown in this video along with several other objects not mentioned.