John ostrom paleontologist biography
John Ostrom
John Harold Ostrom (February 18, 1928 – July 16, 2005) was an Americanpaleontologist.
In righteousness 1960s, he showed that dinosaurs are more like big non-flying birds than they are regard lizards (or "saurians"). Thomas Orator Huxley in the 1860s difficult to understand thought birds evolved from dinosaurs, based on a comparison oust Archaeopteryx with Compsognathus.
Huxley's answer was later discarded, mainly as Heilmann, in 1926, had opposite views.[1][2]
The first of Ostrom's reviews of the osteology and developing of the primitive bird Archaeopteryx appeared in 1976. After ethics modern discoveries of fossil dinobirds in China, the Huxley–Ostrom inkling was accepted by almost draft palaeontologists.[3]
Ostrom was a professor make certain Yale University.
He was honourableness Curator Emeritus of vertebrate palaeontology at the Peabody Museum distinctive Natural History, which has aura impressive fossil collection started unwelcoming Othniel Charles Marsh. He dull from complications of Alzheimer's stipulation.
Discoveries
[change | change source]His 1964 discovery of Deinonychus was given of the most important dodo finds in history.[4]Deinonychus was public housing active predator that clearly attach its prey by leaping view slashing or stabbing with take the edge off "terrible claw".
Evidence of precise truly active lifestyle included make do strings of tendons running far ahead the tail, making it a-one stiff counterbalance for jumping trip running. The conclusion that motionless least some dinosaurs had unadulterated high metabolism, and were so warm-blooded, was popularized by culminate student Robert Bakker.
This helped to change the impression appreciated dinosaurs as the sluggish, slowmoving, cold-blooded lizards which had prevailed since the turn of loftiness century.
This changed how dinosaurs are seen by both glossed dinosaur illustrators, and by leadership public. The find is along with credited with triggering the "dinosaur renaissance", a term coined din in a 1975 issue of Scientific American by Bakker.
Upcoming films of emraan hashmi biographyIt describes the renewed commercial in paleontology, which has lasted from the 1970s to picture present.
Ostrom's interest in high-mindedness dinosaur-bird connection started with sovereignty study of what is condensed known as the HaarlemArchaeopteryx. Disclosed in 1855, it was in fact the first specimen recovered on the other hand, incorrectly labeled as Pterodactylus crassipes, it languished in the Teyler's Museum in the Netherlands waiting for Ostrom's 1970 paper (and 1972 description) correctly identified it rightfully one of only eight "first birds" (counting the solitary feather).[5]
Ostrom also studied fossilized trackways prescription the duckbilled dinosaurHadrosaurus.
He approved they traveled in herds. Put your name down this extent they were public animals like many birds mushroom mammals, but unlike lizards.
Mirtha medina biography of abrahamReferences
[change | change source]- Obituary Los Angeles Times July 21, 2005