Touche!! LOL. It would not be closure if I did not admit outright, that you were indeed correct in calling it an oak tree, more specifically a Texas Live Oak, quercus virginiana! Following is an excert I copied:
"In many towns, including San Antonio to our east, live oaks are often the main street tree, and this is the time of year when falling leaves must be dealt with. Many property owners now find outside their doors what's shown below:
The shiny leaves are live oak leaves, and the dark brown, wormylike items are discarded catkins of male flowers, also from the live oaks. Sometimes a little rain creates considerable dams of live-oak leaves and catkins.
On leafing-out live oaks male catkins are hard to overlook, but unless you know what you're looking for you may not find female flowers, which will mature into the future acorns. They're tiny, greenish things in the axils of expanding new leaves toward the tips of new branches, shown below"
Note: I couldn't copy the picture, which showed the leaves as identical to the ones you posted. Admittedly, I have learned so much in the last few hours about Texas Live Oaks, that I am now suffering from information overload! I can't remember, but it just may be that time of year, when it normally drops it's leaves.
Thank you, I have learned a lot!! Cheers!