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![Smithsonian researchers eat a meal in preparation for a fossil excavation](/sites/default/files/styles/3_2_small/public/2023-11/Team_Breakfast_Pyenson_small.jpg.webp?itok=HD1SScLI)
slideshow
A Squalodontid Success
On a beach in Piña, Panama the tide is rolling out. Faint outlines of skeletal......![Photograph of the model of a Giant Megatooth Shark, taken from the front..](/sites/default/files/styles/3_2_small/public/2023-11/megalodon-full_1.jpg.webp?itok=_9a3fhql)
slideshow
Shark Ancestors
Long before great white sharks appeared, much larger ancestors roamed the ocean.......![A rendering of an underwater marine scene from the Cambrian Period, featuring an arthropod, annelids, and other animals.](/sites/default/files/styles/3_2_small/public/2023-11/602P01G01Burgess_Shalew.jpg.webp?itok=xUubUiMY)
slideshow
A Collection of Cambrian Fossils
When you're standing in a museum surrounded by fossils, you can almost imagine......![the skull of a mosasaur](/sites/default/files/styles/3_2_large/public/2023-11/Image_from_iOS_%2814%29.jpg.webp?itok=y5p5wSQe)
Article
Meals of the Mighty Mosasaur
Between 100 and 65 million years ago, at the time when dinosaurs reigned on land,......
November 2018
![Fossil mosasaur skull and partial skeleton sitting in what looks like the dirt it was excavated from.](/sites/default/files/styles/3_2_large/public/2023-11/hsj_4315_mosasaur_skull_small.jpg.webp?itok=0SVo5e_o)
Article
If You Build An Ocean, Sea Monsters Will Come
Building a productive ocean is complicated. The process is long (on the order of......
October 2018
![an ammonite fossil with a carved snake head](/sites/default/files/styles/3_2_small/public/2023-11/8466450028_8f7ab1da00_o.jpg.webp?itok=RbkBZAFM)
Photo
Snakestones
Here is an ammonite, an extinct, shelled cephalopod related to the...![A shark tooth embedded in a bone](/sites/default/files/styles/3_2_large/public/2023-11/Embedded_Tooth.JPG.webp?itok=OBR412Kc)
Article
What the Megalodon Left Behind
The largest shark ever to exist on this planet, Carcharocles megalodon, could grow......
July 2018
![A 3-D reconstruction of the skull of a fin whale fetus. A 3-D reconstruction of the skull of a fin whale fetus.](/sites/default/files/styles/3_2_large/public/2023-11/Yamato_Striking_Image_USNM268884.jpg.webp?itok=AqVz8n4B)
Article
Keeping An Ear Out For Whale Evolution
Large whales are notoriously hard to study. Except when rising to breathe, they......
March 2015
![Desmostylia A hippopotamus-like creature swims underwater](/sites/default/files/styles/3_2_large/public/2023-11/Desmostylia.jpg.webp?itok=bIRBFWJr)
Article
Flippers or Feet? An Extinct Mammal May Have Been Replaced By Today's Sea Cows
In the seagrass beds and kelp forests of the Oligocene-Miocene transition, nearly......
August 2016
![Although in reality an ichthyosaur and plesiosaur would have likely never battled, this widely shared lithograph by artist, geologist and paleontologist Henry De la Beche even inspired author Jules Verne to pen a similar scene in his book, Journey to the C](/sites/default/files/styles/3_2_large/public/2023-11/DG001578_tif.jpg.webp?itok=iIsSv7-e)
Article
Unearthing History: Mary Anning's Hunt for Prehistoric Ocean Giants
You may not have realized it, but you’ve been acquainted with Mary Anning since......
March 2016