Several scientists suggested these characteristics implied the origin of SNC meteorites from a relatively large parent body, possibly Mars.
Because Phobos has similarities to C-type asteroids and because the Kaidun meteorite is a carbonaceous chondrite, Kaidun is not a Martian meteorite in the strict sense.
However, it may contain small fragments of material from the Martian surface.
The term does not refer to meteorites found on Mars, such as Heat Shield Rock.
On January 3, 2013, NASA reported that a meteorite, named NWA 7034 (nicknamed "Black Beauty"), found in 2011, in the Sahara desert, was determined to be from Mars and found to contain ten times the water of other Mars meteorites found on Earth.
As of 2005, scientific consensus was that the microfossils were not indicative of Martian life, but of contamination by earthly biofilms.
ALH 84001 is as old as the basaltic and intermediate shergottite groups – i.e., 4.1 billion years old.
Roughly three-quarters of all Martian meteorites can be classified as shergottites.
They are named after the Shergotty meteorite, which fell at Sherghati, India in 1865.
Among Martian meteorites, only ALH 84001 and NWA 7034 have radiometric ages older than about 1400 Ma (Ma = million years).