Linguistic palaeontology: first word for cart wheel, kal, was a
bharatiya invention.

ga_d.a_, ga_d.i_ (M.); ga_l.a cart (Si.); ga_d.alaum. (OG.); ga_llu~,
ga_lli~ (G.)(CDIAL 4116). gad.wa~_t. cartwheel track, rut (CDIAL
4117). Image: wheel, cart: ka_l wheel, cart (Ta.); ga_li wheel
(Ka.Tu.); kalu a carriage wheel (Te.); ga_nu, ga_lu wheel (Te.)(DEDR
1483). <sili>(Z) {N} ``^wheel''. #30980. (Go.) <cikari> {N}
``^wheel''. @3425. #5461. <gadi>(B) {N} ``^wheel''. Pl. <-le>.
*Des. @B07810. #10511. sal 'wedge joining the parts of a solid
cart-wheel' (Santali) cakram 'wheel' (Niruktam)[Source: Indian
Lexicon: http://www.hindunet.org/saraswati ] cf. kel (kelati) 'to
shake, tremble, to go or move' (Dha_tup.xv.30)

Thus, in all bharatiya languages, the first word for cart-wheel is:
kal (and dialectical variants since all languages of Bharatam are
deemed a dialectical continuum when the wheel was invented). This can
be called the first law of bhashya.

Surprise! "Gray, however, defends his dates, and points out a flaw in
the wheel argument. What the daughter languages of proto-Indo-
European inherited, he says, was not necessarily the word for wheel
but the word "k'el," meaning "to rotate," from which each language
may independently have derived its word for wheel. If so, the
speakers of proto-Indo-European could have lived long before the
invention of the wheel."
http://www.meta-religion.com/Linguistics/Indo-
American/biological_dig.htm Biological dig for the roots of
language. Russell Gray, an evolutionary biologist at the University
of Auckland in New Zealand.

Linguistic palaeontology, therefore, conclusively proves that the
first cart-wheel was invented in Bharatam among the speakers in the
linguistic area comprising Tamil, Santali and Gujarati languages. So,
ursprache (the original tongue of the Tower of Babel) in Indo-
European homeland has to be found in Bharatam. Move over, Europe. For
a technical discussion of time-depth in historical linguistics and
linguistic palaeontology, by Colin Renfrew, see
http://www.oxbowbooks.com/bookinfo.cfm/ISBN/1902937066//Location/DBBC