The Age of the Reptiles: A New Dinosaur Fossil Trackway Near Moab

Dinosaur footprints on a block of rock that became dislodged from higher above.  Two of my boys are serve as size references.  Image: Joel Duff

Moab will have yet another dinosaur attraction coming this fall.  More than 200 reptilian footprints scattered over an area less than a football field have been uncovered after a resident discovered a few tracks while hiking.  Dinosaur tracks are known from dozens of locations in this area but this site is unusual because of the […]

Exceptional Dinosaur Tracksite in Denali National Park Reveals Herd of Hadrosaurs

Figure showing 127  measured hadrosaur footprints from the Denali site in Alaska.  This figure if from Fiorillo et al. Geology 2014.

Thousands of dinosaur footprints have been found on a steep mountain slope in Denali National Park in Alaska.  These are not the first dinosaur tracks to be found in Denali but the size of the tracksite – at least 500 by 150 feet – and the exceptional preservation of the tracks makes this a notable […]

Mary Anning: Plesiosaurs, Pterosaurs and The Age Of Reptiles

Duria Antiquior - A more Ancient Dorset is a watercolour painted in 1830 by the geologist Henry De la Beche based on fossils found by Mary Anning, and was the first pictorial representation of a scene from deep time based on fossil evidence.  Image: Wikipedia

What do you think of when someone mentions the Jurassic or Cretaceous ages? Most likely you will immediately think of dinosaurs and other large reptiles such as pterosaurs.  Maybe you think of the movie Jurassic Park and the dinosaurs and lush vegetation.   These periods are also known as the Age of the Reptiles and aptly so since many […]

Historical Science and the Case of T. rex’s Puny Arms and Dinosaur Diets

An scan of a page from Ken Ham's "Dinosaurs in Eden" book. Here we can see Tyranosaurus-like dinosaurs with small arms enjoying a diet of flower plants.

Everyone has encountered a T. rex in books, movies or museums.   Besides its size and menacing jaws one of the most striking features of a T. rex is its diminutive arms.   So why were the arms of T. rex so short?   There have been many hypotheses including: 1) they had no use and […]

Juvenile Dinosaurs Found Huddling in a Nest: A Local or Global Catastrophe?

Remains of 15 baby dinosaurs in a nest. Click to enlarge this image. Image credit: Dr. Kh. Tsogtbaatar

We live in a new golden age of fossil discoveries.  It seems that every week a new and dramatic fossil find is revealed.  This fossil renaissance can be attributed to the opening up of new fossil sources, particularly China and Mongolia but also South America and to improved technology for retrieving and analyzing fossil remains. […]

Rapid Burial Allows Preservation of a Hadrosaur Fleshy Head Comb

An example of a duck-billed dinosaur (hadrosaur) skull that has a projection from its head that just have supported some sort of projection of tissue.  The fossil we are reporting here had no boney projection but the imprint in the rock showed that it had a fleshy comb above its head anyway. Later hadrosaurs may have evolved these bones projections to support even large fleshy head features.

A mummified fossil of common species of hadrosaur was found recently in South Dakota that showed that this particular hadrosaur had a rooster-like fleshy comb on its head.  Many hadrosaurs have exotic extensions of their cranial bones but this evidence that even the “boring” hadrosaurs had fleshy projections suggests that the hadrosaurs were an even […]

A Tour of The Dinosaur Trail of Mill Canyon (Moab, UT)

Dinosaut-trail-sign-mill-canyon-moab2-ut

What museum can you go to where  you can see real dinosaur bones, you don’t pay any fees, you can touch all the exhibits and there are no security cameras watching your every move (at least I don’t think there are:-)?  The answer is The Mill Canyon Dinosaur Trail near Moab, Utah.  This outdoor “museum” […]

NH Notes: Dino Doo-Doo (Coprolites) and the Genesis Flood

coprolite

Yep, dinosaurs are known by more than just their bones.  I have been reading quite a few research papers about dinosaurs as I prepare to write a long set of posts about Dr. Schweitzer and the significance of soft-tissue preservation in dinosaur bones.  During this reading I got distracted by a discussion about dinosaur coprolites […]

Did T. Rex Really Have Tiny Arms? – Historical Science and Creationism

T-rex-replica-person-scale-dinosaur

Everyone has encountered a T. rex in books, movies or museums.   Besides its size and menacing jaws one of the most striking features of a T. rex is its diminutive arms.   So why were the arms of T. rex so short?   There have been many hypotheses including: 1) they had no use and […]

Giant Dino Eggs Found? Bad Reporting on Bad Science

Picture of two of the claimed dinosaur eggs.

Dinosaur eggs are surprisingly (to the non-biologist) similar in size. Even the very largest dinosaurs laid eggs that were hardly any bigger than the largest eggs found today. These are observations from the fossil record and these observation make sense biologically even though all we see are fossilized eggs. Eggs are limited in the size they attain for several reasons but one of the most important is that the embryos in the eggs must have oxygen to grow.

Follow

Get every new post delivered to your Inbox.

Join 385 other followers