Osmólska was born in Poznań. A member of the Polish–Mongolian expeditions to the Gobi Desert she described many finds from these rocks, often with Teresa Maryańska. Among the dinosaurs she described are:
H. Osmólska and E. Roniewicz. Deinocheiridae, a new family of theropod dinosaurs. Palaeontologica Polonica21:5-19.
H. Osmólska, E. Roniewicz, and R. Barsbold. A new dinosaur, Gallimimus bullatus n. gen., n. sp. from the Upper Cretaceous of Mongolia. Palaeontologia Polonica27:103-143.
H. Osmólska. Preliminary note on a crocodilian from the Upper Cretaceous of Mongolia. Palaeontologia Polonica27:43-47.
T. Maryańska and H. Osmólska. Pachycephalosauria, a new suborder of ornithischian dinosaurs. Palaeontologia Polonica30:45-102.
T. Maryańska and H. Osmólska. Protoceratopsidae of Asia. Palaeontologica Polonica33:133-181.
H. Osmólska. New light on the skull anatomy and systematic position of Oviraptor. Nature262:683-684.
H. Osmólska. Coossified tarsometatarsi in theropod dinosaurs and their bearing on the problem of bird origins. Palaeontologica Polonica42:79-95.
T. Maryańska and H. Osmólska. First lambeosaurine dinosaur from the Nemegt Formation, Upper Cretaceous, Mongolia. Acta Palaeontologica Polonica26:243-255.
T. Maryańska and H. Osmólska. Cranial anatomy of Saurolophus angustirostris with comments on the Asian Hadrosauridae. Palaeontologia Polonica42:5-24.
A. Perle, T. Maryańska, and H. Osmólska. Goyocephale lattimorei gen. et sp. n., a new flat-headed pachycephalosaur from the Upper Cretaceous of Mongolia. Acta Palaeontologica Polonica27:115-127.
T. Maryańska and H. Osmólska. Postcranial anatomy of Saurolophus angustirostris with comments on other hadrosaurs. Palaeontologia Polonica46:119-141.
T. Maryańska and H. Osmólska. On ornithischian phylogeny. Acta Palaeontologica Polonica30:137-149.
H. Osmólska. Borogovia gracilicrus gen. et sp. n., a new troodontid dinosaur from the Late Cretaceous of Mongolia. Acta Palaeontologica Polonica32:133-150.
R. Barsbold, H. Osmólska, and S.M. Kurzanov. On a new troodontid from the Early Cretaceous of Mongolia. Acta Palaeontologica Polonica32:121-132.
S. M. Kurzanov and H. Osmólska. Tochisaurus nemegtensis gen. et sp. n., a new troodontid dinosaur from Mongolia. Acta Palaeontologica Polonica36:69-76.
H. Osmólska. An unusual theropod dinosaur from the Late Cretaceous Nemegt Formation of Mongolia. Acta Palaeontologica Polonica41:1-38.
R. Barsbold and H. Osmólska. The skull of Velociraptor from the Late Cretaceous of Mongolia. Acta Palaeontologica Polonica44:189-219.
R. Barsbold, H. Osmólska, M. Watabe, P.J. Currie, and K. Tsogtbaatar. A new oviraptorosaur from Mongolia: the first dinosaur with a pygostyle. Acta Palaeontologica Polonica45:97-106.
T. Maryańska, H. Osmólska, and M. Wolsan. Avialan status for Oviraptorosauria. Acta Palaeontologica Polonica47:97-116.
H. Osmólska, P.J. Currie, and R. Barsbold. Oviraptorosauria. In: D.B. Weishampel, P. Dodson, and H. Osmólska, The Dinosauria. University of California Press, Berkeley 165-183.