Begin typing your search above and press return to search.
The new Parliament
access_time 25 Sep 2023 4:00 AM GMT
Amid India-Canada diplomatic row
access_time 22 Sep 2023 4:00 AM GMT
K Radhakrishnan
access_time 21 Sep 2023 4:00 AM GMT
Womens quota in legislatures
access_time 20 Sep 2023 5:24 AM GMT
Extended Congress CWC meet raises hopes
access_time 19 Sep 2023 5:11 AM GMT
Schools breeding hatred
access_time 14 Sep 2023 10:37 AM GMT
access_time 16 Aug 2023 5:46 AM GMT
Remembering the Teachers
access_time 5 Sep 2023 6:24 AM GMT
Homechevron_rightTechnologychevron_rightDinosaur eggs hatched...

Dinosaur eggs hatched slowly like reptiles, not birds: Study

Dinosaur eggs hatched slowly like reptiles, not birds: Study

New York: The eggs of non-avian dinosaurs took nearly between three to six months to hatch, similar to crocodiles and lizards, which explains the reason behind the extinction of the dinosaur species, scientists have found.

It was long assumed that the duration of dinosaur incubation was similar to birds, whose eggs hatch within 11 to 85 days, but they are more like of reptiles whose eggs take weeks to months to hatch.

"Some of the greatest riddles about dinosaurs pertain to their embryology -- virtually nothing is known. Did their eggs incubate slowly like their reptilian cousins? Or rapidly like living dinosaurs -- the birds," asked lead author Gregory Erickson, Professor at Florida State University.

For the study, the team examined the fossilised teeth of two extremely well-preserved ornithischian dinosaur embryos: Protoceratops -- a pig-sized dinosaur, whose eggs weighed 194 grams -- and Hypacrosaurus -- a very large duck-billed dinosaur, with eggs weighing more than 4-kg.

Analysing the pattern of "von Ebner" lines -- the growth lines that are present in the teeth of all animals, as well as humans --, the researchers found that the Protoceratops embryos were about three months old when they died and the Hypacrosaurus embryos were about six months old.

Show Full Article
Next Story