Marshalls Creek Mastodon

Marshalls Creek Mastodon is a Pennsylvania historical marker in Middle Smithfield Twp., Monroe County, dedicated 2016.

Milford Rd. (Rt. 209) in front of Wendy's, near Oak Grove Dr., Middle Smithfield Twp.

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In 1968, John W. Leap and workers at a nearby peat bog discovered the bones of a large mastodon that died about 12,000 years ago. These large, tusked mammals (Mammut americanum) lived throughout North America from 5.2 million to 10,000 years ago. The Marshalls Creek specimen, now in the collection of the State Museum of Pennsylvania in Harrisburg, ranks among the most complete mastodon skeletons found on the East Coast.

TodayHistorical map

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David Rumsey Map Collection, Stanford Libraries

Historical maps covering this location

1834 · New Jersey (H. S. Tanner, 1834) (Barry Lawrence Ruderman Map Collection, Stanford Libraries)
1847 · New Jersey (H. S. Tanner, 1847) (Barry Lawrence Ruderman Map Collection, Stanford Libraries)
1871 · Plate F. East Central Pennsylvania. (David Rumsey Map Collection, Stanford Libraries)
1873 · Map of The State of New Jersey (Lionel Pincus and Princess Firyal Map Division, The New York Public Library)
1944 · Bushkill, Pennsylvania (USGS Historical Topographic Map Collection)

New Jersey (H. S. Tanner, 1847), 1847, covering the location of Marshalls Creek Mastodon, with a pin at the marker's coordinates — New Jersey (H. S. Tanner, 1847), 1847, covering this location. Barry Lawrence Ruderman Map Collection, Stanford Libraries. The pin is ours, placed from the marker's coordinates.

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Marker data: Pennsylvania Historical and Museum Commission via data.pa.gov

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