Sinoascus

{{Short description|Extinct genus of comb jellies}}

{{Speciesbox

| fossil_range = {{fossil range|Cambrian Stage 3}}

| image = Sinoascus papillatus.jpg

| image_caption = Artist's reconstruction

| parent_authority = Chen & Zhou, 1997

| taxon = Sinoascus paillatus

| authority = Chen & Zhou, 1997

}}

Sinoascus paillatus is an extinct species of stem-group ctenophore, known from the Maotianshan shales of Yunnan, China. It is dated to Cambrian Stage 3 and belongs to late Early Cambrian strata.

Fossil specimens are poorly preserved, providing little details, if any at all, about the anatomy of the comb rows.