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Oldest Known Squawk Box Suggests Dinosaurs Likely Did Not Sing

By Guest PostJanuary 21, 2017Scienceage of dinosaurs, antarctic fossil, dinosaurs, fossilized syrinxes, franz goller, julia clarke, mesozoic era, oldest squawk box, sing, syrinx, vegavis iaai, vocal organ

AUSTIN, Texas — The oldest known vocal organ of a bird has been found in an Antarctic fossil of a relative of ducks and geese that lived more than 66 million years ago during the age of dinosaurs. (more…)

Placental Mammal Diversity Blossomed After Age of Dinosaurs

By Guest PostFebruary 9, 2013Nature, Scienceafrica today, afrotheria, age of dinosaurs, american museum, americas, amnh, andrea cirranello, anthropologist, boundary, branching history, brazil, cloud based, common ancestor, cretaceous age mammal, cretaceous paleogene extinction, cretaceous terrestrial revolution, cyberinfrastructure, diversification, dna sequence data, earth, elephants to aardvarks, encoded by dna, evolutionary history, evolutionary trees, extinct biotic groups, federal university, fernando perini, fossil species, fossils and anatomy, fragmentation of gondwana, genetic, genetic data, genomic data, genomics based model, h richard lane, insect eating animal, john wible, kpg event, late cretaceous, mammal relationships, marcelo weksler, mary silcox, massive dataset, maureen oleary, mesozoic era, michael novacek, minas gerais, molecular clock, molecules and morphology, morphobank, nancy simmons, national museum, national science foundation, natural history, non avian dinosaurs, nsf, optimization, paleontologist, phenomic data, phenomic matrix, phenomic systems, phylophenomics, physical traits, placental mammal diversity, placental mammal tree, publicly accessible database, robb brumfield, scarborough, stony brook university, time of origin, tree of life, university of toronto, well preserved fossils

Scientists build new ‘tree of life’ for placentals, visualize common ancestor

Scientists have reconstructed the common ancestor of placental mammals–an extremely diverse group including animals ranging from rodents to whales to humans–using the world’s largest dataset of both genetic and physical traits. (more…)

Asteroid that Killed the Dinosaurs also Wiped out the ‘Obamadon’

By Guest PostDecember 11, 2012Nature, Scienceage of dinosaurs, alberta, asteroid collision, asteroid strike, bhart anjan bhullar, boundary, canada, carnivorous lizards, cerberophis, cretaceous, dinosaur species, dinosaurs, diversification, ecosystem, edmontosaurus, evolution, extinct lizard, flood, fossils, gracilis, harvard, jacques a gauthier, kill, lizard, mammals, mass extinction, montana, new mexico, nicholas r longrich, North America, obamadon, obamadon gracilis, odon, palaeosaniwa, paleogene, political significance, polyglyphanodontia, slender, snake, species, survivor, swamps, t rex, taxonomy, tooth, triceratops, united states, us president, yale, yucatan peninsula

The asteroid collision widely thought to have killed the dinosaurs also led to extreme devastation among snake and lizard species, according to new research — including the extinction of a newly identified lizard Yale and Harvard scientists have named Obamadon gracilis.

“The asteroid event is typically thought of as affecting the dinosaurs primarily,” said Nicholas R. Longrich, a postdoctoral associate with Yale’s Department of Geology and Geophysics and lead author of the study. “But it basically cut this broad swath across the entire ecosystem, taking out everything. Snakes and lizards were hit extremely hard.” (more…)

Oceans Acidifying Faster Today Than in Past 300 Million Years

By Guest PostMarch 2, 2012Environmentage of dinosaurs, barbel honisch, benthic foraminifera, candace major, coral reefs, ellen thomas, fossil carbonate shells, great dying, jurassic era, ocean acidification, ocean ph, siberian traps, white plankton fossils

*Few parallels for today’s rapid ocean changes in geologic record*

The oceans may be acidifying faster today than they did in the last 300 million years, according to scientists publishing a paper this week in the journal Science.

“What we’re doing today really stands out in the geologic record,” says lead author Bärbel Hönisch, a paleoceanographer at Columbia University’s Lamont-Doherty Earth Observatory. (more…)

UF Study Names New Ancient Crocodile Relative from The Land of Titanoboa

By Guest PostSeptember 17, 2011Scienceacherontisuchus guajiraensis, age of dinosaurs, alex hastings, ancient crocodile, ancient crocodyliform, asteroid impact, atlantic ocean, caribbean, carlos jaramillo, catastrophes, cerrejon mine of northern colombia, changes in climate, christopher brochu, colombian coal mine, crocodiles, diversity of animals, dyrosaurid, ecological changes, environmental changes, fossils, freshwater environments, greek mythology, jonathan bloch, largest snake, oldest known rainforest ecosystem, open pit coal mines, palaeontology, Paleocene, river acheron, species, the river of woe, titanoboa, university of florida, warmer climate

GAINESVILLE, Fla. — Did an ancient crocodile relative give the world’s largest snake a run for its money?

In a new study appearing Sept. 15 in the journal Palaeontology, University of Florida researchers describe a new 20-foot extinct species discovered in the same Colombian coal mine with Titanoboa, the world’s largest snake. The findings help scientists better understand the diversity of animals that occupied the oldest known rainforest ecosystem, which had higher temperatures than today, and could be useful for understanding the impacts of a warmer climate in the future. (more…)

Tag Archives: age of dinosaurs

Oldest Known Squawk Box Suggests Dinosaurs Likely Did Not Sing

Placental Mammal Diversity Blossomed After Age of Dinosaurs

Asteroid that Killed the Dinosaurs also Wiped out the ‘Obamadon’

Oceans Acidifying Faster Today Than in Past 300 Million Years

UF Study Names New Ancient Crocodile Relative from The Land of Titanoboa