Wednesday, January 24, 2018
Contact us    |    Advertise    |   Help   RSS icon Twitter icon Facebook icon
    Home  ·  News  ·  Forum  ·  Stories  ·  Image Gallery  ·  Columns  ·  Encyclopedia  ·  Videos
Find: in

Dinosaurs died out due to incubation period


Posted on Tuesday, 3 January, 2017 | Comment icon 15 comments

It took some dinosaurs up to six months to hatch. Image Credit: CC BY-SA 3.0 Xenophon
A new theory has suggested that the dinosaurs became extinct because they couldn't hatch quickly enough.
The asteroid that struck the Earth at the end of the Cretaceous was unquestionably devastating, but while birds and mammals seemed to flourish after the disaster, the dinosaurs, which had ruled the planet for millions of years, struggled to survive and ultimately went extinct.

Now a new theory has suggested that this may have been because, unlike mammals, the dinosaurs had a particularly long incubation period that made it difficult for them to recover quickly enough.

The idea follows on from a new discovery by scientists at Florida State University and the University of Calgary who found that it is possible to calculate how long a dinosaur took to hatch by analyzing marks on the teeth of embryos and babies.

Using this new technique, the researchers were able to determine that the hatching process may have taken up to six months - an eternity compared to the incubation period of small mammals.

"Some of the greatest riddles about dinosaurs pertain to their embryology, virtually nothing is known," said biological scientist Professor Gregory Erickson.

"We suspect our findings have implications for understanding why dinosaurs went extinct at the end of the Cretaceous period, whereas amphibians, birds, mammals and other reptiles made it through and prospered."

Source: Telegraph | Comments (15)

Tags: Dinosaurs

Recent comments on this story
Comment icon #6 Posted by Carnoferox on 5 January, 2017, 2:59
Just a ceratopsian (Protoceratops) and hadrosaur (Hypacrosaurus), so even further limited to the Cerapoda. The results are not indicative of the Dinosauria as a whole, but rather this more limited clade.
Comment icon #7 Posted by Alston on 6 January, 2017, 1:30
Interesting theory. The meteor/asteroid extinction theory never really made sense to me, especially since birds and other forms of reptiles still exist today. Crocodiles I think are very ancient.
Comment icon #8 Posted by Carnoferox on 6 January, 2017, 2:28
If you actually read the paper, they are NOTproposing incubation rates as a cause of extinction. The impact theory is still the most widely accepted, with plenty of evidence supporting it (iridium layers, shocked quartz, magnetic anomalies, tsunami depositsetc.). Also note that only two species from the limited clade Cerapoda were sampled, meaning that the results aren't evenindicative of incubation rates for the whole Dinosauria. The article (not the paper) is the one suggesting that long incubation rates contributed to dinosaur extinction, following the popular and very outdated misconcep... [More]
Comment icon #9 Posted by Frank Merton on 6 January, 2017, 3:06
The message I got was not that the slower development caused extinction, but that it was a major factor in why dinosaurs did not survive the catastrophe. I guess scenarios that would support this are not hard to think up. One thing to keep in mind was that this was not a matter of, "Oh, you are a dinosaur, ZAP; oh, you are a bird, you pass." The vast majority of birds and everything else was killed -- what survived was probably a very few lucky individuals who happened to somehow survive (or their eggs).
Comment icon #10 Posted by Carnoferox on 6 January, 2017, 3:15
As I've already stated, the paper was limited to only two species, so average incubation rates for the whole Dinosauria remain unknown. I also said that many clades ofreptiles, birds, and mammalswent extinct during the K-Pg event. I think you might be confusing my wordswith Alston's.
Comment icon #11 Posted by Frank Merton on 6 January, 2017, 3:29
Yea, I read that, but found the criticism wanting. By the way, what people post isn't always about what you post.
Comment icon #12 Posted by Carnoferox on 6 January, 2017, 4:08
When you quote someone it usually means you are talking about what they havesaid. When you talk about someone else it is confusing.
Comment icon #13 Posted by paperdyer on 6 January, 2017, 19:20
So it might be possible that not all dinos were cold blooded! Now if some their cold blooded cousins, gators, crocs and snakes could have been devastated as well.....
Comment icon #14 Posted by Carnoferox on 6 January, 2017, 19:24
Many paleontologists think that dinosaurs would have been either endothermic ("warm-blooded") or mesothermic (in between "warm-blooded" and "cold-blooded"), rather than ectothermic ("cold-blooded"). This has been knownfor the past few decades.
Comment icon #15 Posted by Alston on 6 January, 2017, 19:59
It makes you wonder though, what caused these species to survive? What conditions they live under that enabled them to survive? Things that make you go hmmm...


Please Login or Register to post a comment.


  On the forums
Forum posts:
Forum topics:
Members:

6087278
260551
172676

 
One more Dead Sea Scroll has been deciphered
1-23-2018
One of the last two untranslated Dead Sea Scrolls has finally been pieced together by archaeologists.
Did Queen Nefertiti ever rule ancient Egypt ?
1-23-2018
One Egyptologist has put forward the idea that Nefertiti was not quite as powerful as history suggests.
Chunk of North America is part of Australia
1-23-2018
Scientists have identified an area of Australia that broke away from North America 1.7 billion years ago.
Study shows cats can be right or left-pawed
1-22-2018
It's not only humans who favor one hand over the other - cats seem to share this preference as well.
Featured Videos
Gallery icon 
Brian Cox talks to Buzz Aldrin
Posted 1-18-2018 | 1 comment
Professor Brian Cox discusses space travel with legendary astronaut Buzz Aldrin.
 
Typing vs handwriting
Posted 1-16-2018 | 2 comments
Is typing on a computer better or worse for your memory then writing on paper ?
 
Can coding help avoid job automation ?
Posted 1-12-2018 | 0 comments
Taking up coding and technical skills to avoid automation may be counter-productive.
 
Dinosaur death match
Posted 1-8-2018 | 0 comments
A look at how various dinosaurs might have fared against the predators of their day.
 
Best records of 2017
Posted 1-4-2018 | 0 comments
A look back at some of the most bizarre and amazing world records of the last year.
 
 View: More videos
Stories & Experiences
Strange feeling
1-18-2018 | Different places
 
Unexplained voices
1-18-2018 | United States
 
First college apartment
12-31-2017 | Daytona Beach, FL
 
The night my niece was murdered
12-19-2017 | Delhi, Louisiana
 
Mysterious Headlights
12-10-2017 | Morgan County, Alabama
 
Possibly a child ghost
12-10-2017 | Edgewater, Maryland
 
True story about black-eyed kids
12-10-2017 | Portland oregon
 
Alien or paranormal encounter ?
12-10-2017 | United States
 
Ouija board experience
12-10-2017 | Ohio
 

         More stories | Send us your story
 
Top   |  Home   |   Forum   |   News   |   Image Gallery   |  Columns   |   Encyclopedia   |   Videos   |   Polls
UM-X 10.7 Unexplained-Mysteries.com 2001-2017
Privacy Policy and Disclaimer   |   Cookies   |   Advertise   |   Contact   |   Help/FAQ