Oak Park in Cook County, Illinois — The American Midwest (Great Lakes)

Amphibians

Photographed by Sean P. Flynn, March 27, 2025

1. Amphibians Marker

Inscription.
400 Million Years Ago

Amphibians crawl from the sea

Topics. This historical marker is listed in these topic lists: Animals • Anthropology & Archaeology • Parks & Recreational Areas.

Location. 41° 53.075′ N, 87° 48.111′ W. Marker is in Oak Park, Illinois, in Cook County. It is on South Marion Street 0.1 miles south of Pleasant Street, on the right when traveling north. The stone is a part of the labyrinth located on the western edge of Mills Park. Touch for map. Marker is at or near this postal address: 217 Home Avenue, Oak Park IL 60302, United States of America. Touch for directions.

Regionally, this marker is in Greater Chicago.

It is also in the American Midwest

and on the Great Lakes.

Globally, it is in North America,

the Western Hemisphere,

the Western World,

and the Anglosphere.

Historically, it finds itself in what was once the Viceroyalty of New France,

the territory of the Mississippian Culture,

and the Northwest Territory.

Other nearby markers. At least 25 other markers are within walking distance of this marker: Ancient Illinois Climate

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(here, next to this marker); Illinois Tulley Monster (here, next to this marker); Cambrian Sea (here, next to this marker); The Age of Mammals (here, next to this marker); Volcanoes (a few steps from this marker); Sabre Tooth Tigers (a few steps from this marker); Solar System (a few steps from this marker); Beginning of the Wisconsin Ice Age (a few steps from this marker); Oak Park Sand Spit (a few steps from this marker); End of the Wisconsin Ice Age (a few steps from this marker); Hunter Gatherers (a few steps from this marker); Oak Savanna (a few steps from this marker); Potowatamie (a few steps from this marker); First European Settlers in Illinois (a few steps from this marker); Mills Park Labyrinth (within shouting distance of this marker); Pleasant Home Foundation (within shouting distance of this marker); The Kettlestrings (within shouting distance of this marker); Mills Estate Purchase (within shouting distance of this marker); Mills Park and Pleasant Home (within shouting distance of this marker); Herbert S. Mills (within shouting distance of this marker); Village of Oak Park (within shouting distance of this marker); Pleasant Home

Mills Park Labyrinth image. Click for full size.

Photographed by Sean P. Flynn, March 27, 2025

2. Mills Park Labyrinth

(within shouting distance of this marker); a different marker also named Mills Park and Pleasant Home (about 300 feet away, measured in a direct line); a different marker also named Mills Park and Pleasant Home (about 400 feet away); a different marker also named Mills Park and Pleasant Home (about 400 feet away). Touch for a list and map of all markers in Oak Park.

More about this marker. The stone is one of about 20 pavers in Mills Park that show the history of Oak Park from the dawn of the solar system through 2012. The pavers are part of a labyrinth embedded into the ground near the western entrance into Mills Park.

Related marker. Click here for another marker that is related to this marker. The Mills Park Labyrinth marker page includes a list of all 21 stones in the labyrinth in chronological order

Photographed by Sean P. Flynn, March 27, 2025

3. Mills Park labyrinth

Photographed by Sean P. Flynn, March 27, 2025

4. Mills Park labyrinth

A nearby historical marker says that the labyrinth's artistic style was inspired by the architect George W. Maher, who designed the Pleasant Home, located in this park.

Credits. This page was last revised on March 31, 2025. It was originally submitted on March 29, 2025, by Sean P. Flynn of Oak Park, Illinois. This page has been viewed 94 times since then and 13 times this year. Photos: 1, 2. submitted on March 29, 2025, by Sean P. Flynn of Oak Park, Illinois. 3, 4. submitted on March 27, 2025, by Sean P. Flynn of Oak Park, Illinois.