  The post-starburst region B in M82 and its massive star cluster component
have been the focus of multiple studies, with reports that there is a large
population of coeval clusters of age ~1 Gyr, which were created with a Gaussian
initial mass distribution. This is in disagreement with other studies of young
star clusters, which invariably find a featureless power-law mass distribution.
Here, we present Gemini-North optical spectra of seven star clusters in M82-B
and show that their ages are all between 10 and 300 Myr (a factor of 3-100
younger than previous photometric results) and that their extinctions range
between near-zero and 4 mag (Av). Using new HST ACS-HRC U-band observations we
age date an additional ~30 clusters whose ages/extinctions agree well with
those determined from spectroscopy. Completeness tests show that the reported
`turn-over' in the luminosity/mass distributions is most likely an artefact,
due to the resolved nature of the clusters. We also show that the radial
velocities of the clusters are inconsistent with them belonging to a bound
region.
