Can anyone help identify this antique marble table?

Try looking up Antique Marble tables, Eastlake Antique Walnut tables.

My great grandmother has some similar. Made in later part of the 1800's. Worth is dependent upon condition between 300+, usually under 1,000.

Edit: My great grandmothers table, which is authentic, and very much resembles yours in the pic does have the very same small wheels and pretty much the same curves of the legs, particularly at the bottom and the lines on the side are also similar. This to me is a pretty ornate table as it has more markings than a table of this picture. Perhaps I see more because it is similar to hers.

I'm not an expert on time periods, but know quite a bit about furniture construction, so here we go...

- commonly referred to as a marble top parlor table, though it can also be referred to as a side or occasional table

- according to pix in Judith Miller's book "Furniture" - it's a great guide you can find in most libraries, it will help you narrow down the style if you can find a copy - the style would most likely be Victorian, though possibly the more traditional definition of Queen Anne. (If you look up pix of Queen Anne furniture online, you will see a bunch of junk that looks like it came from the Bombay Company store at the mall. Real Queen Anne furniture was much more ornate.)

-from the chip on the center of the apron, it looks like there are veneered elements to the table (as opposed to all solid pieces of wood), but it's REALLY hard to see details in such a murky picture.

- the rounded legs in the middle would be referred to as "turned", which is the method used to make them round and add the beads (the ball-looking parts). If you want to know more, the search terms "turned legs furniture" will get you lots of examples. This is a descriptive term that if told to a furniture period expert, would help the expert identify more about the table.

-Again, it's hard to tell from the murky photo, but it's most likely walnut, with mahogany being the next most likely.

-The REALLY old original pieces of Victorian and Queen Anne furniture generally don't have wheels. It's likely to be a reproduction, still a very old table... though I suppose it's possible someone could've added the wheels to an original. Highly unlikely, but possible.

It's not an exact answer, but it's a start. It may be easiest to just take this to a reputable antique dealer for identification.

And lastly... there may be a maker's mark on the underside of the table somewhere, or if you can move the marble top easily, under it. That will be your biggest clue if you can find it.