I just found in an article by Vallon et al. (2016, p. 10-11) under their ethological trace fossil category: digestichnia the statement, that also some molluscs including cephalopods, bivalves, and gastropods can produce regurgitates, i.e. they can vomit indigestible food particles. Can anyone here confirm these observation, because the authors do not provide additional references.
I am rather inclined to assume that cephalopods could not vomit, because all that matter has to pass through their brains. Any comment is highly appreciated