We examine the known typology of laryngeal complexity (Silverman 1997a, b) in light of phonetic research (Frazier 2009) showing that Yucatec Maya uses contrastive tone and phonation type. The phonetic patterns in YM suggest that articulatory incompatibility is the most important factor in enforcing the phasing of tone and non-modal phonation, but that perceptual factors account for the distribution of phasing patterns. Furthermore, YM is similar to the unrelated languages Danish and Acoma which show that creaky voice conditions preceding high pitch. We motivate future research on cross-linguistic differences in the production of creak and its interaction with pitch and gender.