e860c3d1-5700-4bc4-8f6f-a0672b89b577

Ptychopariid trilobite

Round shaped fossil in a rock

YELL-92020: This head of a roughly 520 million year old Ptychopariid trilobite (YELL-92020) is one among many identified from the Pilgrim Limestone, on Mt. Holmes in Yellowstone National Park. Trilobite order Ptychopariid, was abundant during the early Cambrian and became extinct at the end of the Ordovician (~444 million years ago). But, at the end of the Permian all trilobites vanished, along with over 95% of all marine life.; Megan Norr; March 2016; Catalog #20801d; Original #YELL_92020

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NPS/Megan Norr

Public domain:Full Granting Rights

Image

Yellowstone National Park, Code: YELL

Yellowstone National Park
Latitude: 44.581298828125, Longitude: -110.490097045898

NPS.gov Collection

03/02/2016

03/02/2016

Public Can View

Tuesday, November 6, 2018 11:22:41 AM

Tuesday, November 6, 2018 11:22:41 AM

20801d YELL-92020.jpg

NIKON CORPORATION NIKON CORPORATION, NIKON D5200

10/600 sec at f / 5.6

55 mm

ISO 640

Wednesday, March 2, 2016 6:09:13 PM

jpg

7.0 MB

2016-10-26T14:13:55-06:00

Scenic