Qualla: Kolponomos

Kolponomos: Introduction

Sat, 21 Mar 2026 00:00:00 GMT

Photo credit Baker, Samuel White, modified by A. C. Tatarinov, Public domain. The Smithsonian Institution's paleontology laboratory has prepared fossils from every continent and every era of Earth's history. When a rock-hard concretion containing the skull of Kolponomos newportensis arrived on their bench, technicians called it "the most difficult material ever encountered by our laboratory." The concretion had been squeezed by millions of years of tectonic stress until it was harder than the bone inside it, and extracting the specimen required a combination of techniques and two full decades of patient work. What emerged was one of the strangest marine mammals ever discovered -- a creature that bit like a sabertooth cat and crunched like a bear, yet lived the life of a sea otter.

Read more: Kolponomos on Qualla

Image: Baker, Samuel White, modified by A. C. Tatarinov | Public domain

Kolponomos: The Clallam Bay Discovery

Sat, 21 Mar 2026 00:00:00 GMT

Photo credit Llez (H. Zell)., CC BY-SA 3.0. Kolponomos first surfaced in 1957, when a partial skull -- technically a rostrum, the front portion of the face -- was found at Slip Point near Clallam Bay, Washington, eroding from rocks of the Clallam Formation. Paleontologist Ruben A. Stirton of the University of California Mu...

Read more: Kolponomos on Qualla

Image: Llez (H. Zell). | CC BY-SA 3.0

Kolponomos: A Fossil Collector's Persistence

Sat, 21 Mar 2026 00:00:00 GMT

Photo credit Llez (H. Zell)., CC BY-SA 3.0. The second species, Kolponomos newportensis, owes its discovery to Douglas Emlong, an Oregon fossil collector with an extraordinary eye for marine mammal remains along the Pacific Coast. Near Newport, Oregon, Emlong found a concretion in two pieces -- the first in 1969, the secon...

Read more: Kolponomos on Qualla

Image: Llez (H. Zell). | CC BY-SA 3.0

Kolponomos: Sabertooth Bite, Otter Table Manners

Sat, 21 Mar 2026 00:00:00 GMT

Photo credit Llez (H. Zell)., CC BY-SA 3.0. Kolponomos lived during the early Miocene epoch, about 20 million years ago, when the coastline of what is now the Pacific Northwest looked nothing like it does today. The animal was bear-sized and powerfully built, with a feeding strategy unlike any living mammal. Research publi...

Read more: Kolponomos on Qualla

Image: Llez (H. Zell). | CC BY-SA 3.0

Kolponomos: A Stem on the Pinniped Tree

Sat, 21 Mar 2026 00:00:00 GMT

Photo credit Llez (H. Zell)., CC BY-SA 3.0. Before the discovery of K. newportensis, scientists debated where Kolponomos fit in the mammalian family tree. The raccoon hypothesis was the best guess available from the fragmentary K. clallamensis material. The complete Oregon specimen changed everything, placing Kolponomos as...

Read more: Kolponomos on Qualla

Image: Llez (H. Zell). | CC BY-SA 3.0