References in periodicals archive ?
The deposits of the Arukula Regional Stage are represented by brownish- and yellowish-grey, fine- to coarse-grained, cross-bedded sandstones with clay balls, lenses and interlayers.
When fresh, they have an orange colour; but when dried and stored, they assume a yellowish-grey hue.
Symptoms include a cough accompanied by yellowish-grey or green mucus (sputum).