“Unnatural” Selection
Humans driveevolutionof conch size
Marzo 21, 2014
Thousands of years of hunting has turned a substantial meal into a bite-sized snack.
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Displaying 10 of 75 results.
Window to the past
How long has Central America been so biologically diverse?
Septiembre 28, 2017
20-million-year-old fossil seeds shed light on origins of plant biodiversity in Panama.
Declining reefs
What were Caribbean coral reefs like before humans?
Septiembre 29, 2017
Fossil reefs from around the Caribbean show how biologically rich these ecosystems once were — and provide goalposts for conservationists hoping to restore them.
Paradox explained
Fast growth despite phosphorus limitation
Marzo 07, 2018
Individual tree species, not forest communities, respond to changes in phosphorus levels.
Flowers from Darkness
“Tropical forests are the result of an accident of history.” - Carlos Jaramillo.
Abril 23, 2018
About 66 million years ago, a radical change on the Earth filled tropical forests with flowers. A new catalog of fossil pollen grains may hold an explanation.
Redefining Pristine
Modern marine oxygen-deficiency research inspires search for fossil record
Mayo 11, 2018
Smithsonian scientists who documented massive mortality of corals and reef organisms meticulously studied one of the apparent causes: oxygen deficiency. A Smithsonian paleobiologist asks if the recent fossil record shows signs of similar hypoxia events.
Not Resilient
Old Species Learn New Tricks…Very Slowly
Agosto 23, 2018
Perhaps old species, like some older people, gradually lose their ability to deal with changes in their environment. Aaron O’Dea and colleagues show that when the Caribbean was cut off from the Pacific by the rise of the Panama land bridge, evolutionarily old species took longer to expand into new habitats than evolutionarily younger species did.
Hitch-hiking barnacles
Deep time tracking devices
Abril 02, 2019
Long-distance migrations are common for large whales, but when in their evolutionary past did they begin to migrate and why? Fossil whale barnacles may have the answers
Habitat symbiosis
Punta Galeta, where sea and earth coexist
Abril 15, 2019
The Smithsonian’s first marine lab on Panama’s Caribbean coast invites visitors and researchers to experience the diversity of marine ecosystems within a protected space.
Platypus crab
Fossil crab reveals a new branch in the tree of life
Abril 25, 2019
By taking on characteristics from another, younger stage in its life-cycle, this fossil crab was probably able to adapt to new conditions.
