The thermal behaviour of two series of liquid crystalline carbosilane dendrimers of generations 1 - 5 containing 8, 16, 32, 64 and 128 terminal phenyl benzoate mesogenic groups, respectively, was investigated by means of polarising optical microscopy, DSC and X-ray methods. Mesogenic groups on the base of methoxybenzoic (anisic) acid (Anis) and methoxyphenol (MPhB) were linked to the carbosilane dendritic matrices through -OOC-(CH2)(10)-Si(CH3)(2)OSi(CH3)(2)- spacer. All LC dendrimers synthesised display smectic type mesophases and crystal phases over wide temperature region. LC dendrimers of fifth generation have more complex phase behaviour: heating the samples leads to transition from smectic to, most probably, columnar mesophases.