The example of C at Dan 4:9 is clearly vocalized as such, but it may well be properly assumed to have been a Dt form with the orthographic assimilation tṭ > ṭṭ > ṭ, as pointed out to us by E. Cook, having also been made by J. Tropper, JNSL 1997.
The JBA passage cited as the sole Dt example may easily be interpreted as D instead as in many mss.
For a possible Old Aramaic example see s.v. ṭll vb. : to move something around(?); to sport