Dessicated Toothed Crust (Basioradulum radula), on oak.
Peziza. agg. I did think they were Palomino Cup (Peziza repanda), but I am not one hundred percent sure.
This group above, were the most mature specimens and they were found on the lower section of the oak log and the margins of the fruit bodies were red and warty.
The largest was approximately 6-7 cm diameter x 3 cm tall.
Immature specimens were approximately 1 cm diameter.
Last but not least, I found a Ophiocordyceps ditmarii, approximately 2.5-3 cm cm tall growing on an insect underground, unfortunately I did not uncover the buried host. I originally thought it to be a Xylaria until I found another specimen on the 17-05-13.