Layer Estimates:

Layer: Dinosaurs (ID:0)
Count: 12
Extent:

XMin: -9657534.7301
YMin: 510805.6778
XMax: -9653560.4323
YMax: 516937.841899998
Spatial Reference: 102100 (3857)

Layer: Other_Structures (ID:1)
Count: 2
Extent:

XMin: -9656521.2387
YMin: 514687.7883
XMax: -9654931.2919
YMax: 516482.216499999
Spatial Reference: 102100 (3857)

Layer: JP_Buildings (ID:2)
Count: 3
Extent:

XMin: -9657078.3572
YMin: 511844.463300001
XMax: -9653941.2291
YMax: 514285.832300002
Spatial Reference: 102100 (3857)

Layer: JP_Roads (ID:3)
Count: 6
Extent:

XMin: -9657269.1468
YMin: 511556.637699999
XMax: -9653388.3932
YMax: 516638.734599999
Spatial Reference: 102100 (3857)