The absence of a developed pleurocoel, however, indicates that it belongs to a distinct taxon.
Or that it's not adult...?
And more stuff has been found for _Hesperornis rossica_.
(By "inner fingers" the authors probably mean "inner toes".)
Panteleyev, A.V. Popov, E.V. and Averianov, A.O. (2004). New record of Hesperornis rossicus