So, I'm trying my hand at realizing figured bass. I've been through theory, and have been composing music regularly since high school, so I have all of the basics down and then some. However, there are some odd spots that seem to imply either a major or minor seventh chord. During my intro theory class, none of the examples of figured bass given to us contained these, and furthermore we were told that major an minor sevenths generally only appeared as passing tones in rare cases, as opposed to an individually stated sonority. To my ear, being that I live in the present instead of 400 years ago, most of these sound fine. However, I'd just like to know if I'm interpreting these correctly.
Here's an example from Marcello's Sonata in D minor for Recorder and Continuo (Op. 2):
On the second beat of the first measure here, this is marked as a G minor seventh chord in first inversion, and on the second beat of the second measure, an F major seven chord is spelled out in the first inversion. Is this correct?
In another example here:
On the first beat of the second measure is a B natural with a 7 indicated above it. With the 3rd and 5th implied this would spell out a B half diminished 7th chord. While this sonority is technically more acceptable, this jumps out to my ear as awkward in context. I'm using a recording to double check myself, and the players actually substitute a G major chord in first inversion. Which one is correct?
Thanks for taking a look, I would appreciate any insight!