Paleontology

Category archives for Paleontology

Crocodile ancestors found in Sahara

A six-metre croc with three sets of fangs is among the five ancient relatives of modern-day crocodiles found in the Sahara Desert, scientists said Thursday. Three of the fossils, discovered by researchers led by Paul Sereno of the University of Chicago and Hans Larsson of McGill University, represent newly named species. The fossil remains were…

How Young is the Grand Canyon?

To answer that question briefly, it is really really old if you mean “how old are the oldest rocks that are exposed by the Grand Canyon,” and it is probably just a few million years old (5 or 6 by some estimates) if you mean “how long did the canyon itself take to form.” An…

Spoor of South African Dinos Analyzed

A new investigation of the sedimentology and ichnology of the Early Jurassic Moyeni tracksite in Lesotho, southern Africa has yielded new insights into the behavior and locomotor dynamics of early dinosaurs.

The evolutionary history of mammals can be reviewed as the evolutionary history of tooth loss. The early mammals had many teeth, and every now and then in evolutionary time, a tooth is lost wiht subsequent species arriving from that n-1 toothed form having that smaller number of teeth. With ver few exceptions, no mammals have…

New Dinosaur Species from Niger

Just reported in PLoS ONE is a new dinosaur. Spinophorosaurus nigerensis Here are the salient facts:

previously reviewed Giant Dinosaurs of the Jurassic is a children’s book for kids in third to fifth grade or, in my opinion, a little younger. Certainly this is an excellent choice, because of the cool illustrations, of a book to read aloud to the pre-literate little ones.

Ida the Fossil Primate

You probably know that there is a new primate fossil, nicknamed “Ida,” and that there is quite a buzz about it. Darwinius masillae, aka Ida Ida comes from fossil deposits in Germany, and was originally excavated in two different parts by private collectors, and only recently rejoined and recognized for the amazing fossil it is.…

Many years ago, a sudden event occurred that changed everything. Or at least, that is what we think now. But in truth, the event took longer than many today believe, and many of the specific details, the exact order of events, the actual meaning of each detail, are not fully understood. Indeed, in the process…

Keller has been one of the leading voices opposing the impact KT boundary extinction hypothesis. According to a press release from her university, she has more on this matter.

… has been found. Inside the fish’s skull, in fact. This is from a chimaeroid fish, which today are fairly rare but during the Carboniferoius were quite common and diverse. There are really two aspects of this find that are especially interesting. One is the 3D imagery that was obtained of the ancient fossilized brain,…