Tunisian dinosaur age mammal tracks discovery


This video from the USA says about itself:

During Demise Of Dinosaurs, Early Mammals Had Reason To Smile

Although humans never walked with dinosaurs, some of our earliest ancestors seem to have done so. Dr. Gregory P. Wilson, an Adjunct Curator of Vertebrate Paleontology and Assistant Professor of Biology at the Burke Museum of the University of Washington, is the lead author of a study that was published in Nature, titled Adaptive Radiation of Multituberculate Mammals Before the Extinction of Dinosaurs. Wilson’s findings challenge a long-held notion that the Cretaceous-Tertiary (K-T) extinction event was the launchpad for mammalian evolution into a diverse and proliferative group.

From Cretaceous Research:

First report of mammal-like tracks from the Cretaceous of North Africa (Tunisia)

Michela Contessi

Abstract

This paper describes Cretaceous mammal-like tracks from southern Tunisia. The tracks, referred to the Cenomanian Kerker Member of the Zebbag Formation, are the first mammal-like footprints reported from the Cretaceous of North Africa. The good preservation of the two tracks and their distinctive morphology support their attribution to a mammalian trackmaker, although the limited available data prevents attribution to a specific ichnotaxon. Morphologically, the Tunisian tracks resemble those of modern Mustelidae, however, based on mammalian faunas in the Cretaceous of Africa, they probably have affinity with members of Multituberculate family. Theropod dinosaur and bird tracks occur on the same track-bearing layer. The sediments are interpreted as an arid tidal flat environment, suggesting that African mammals might have shared their environment with a diverse fauna of larger animals.

Highlights

► Two mammal-like tracks from the Cenomanian of North Africa are described here. ► Footprints described here represent the oldest evidence of mammals in Tunisia. ► Available data suggest affinities of the trackmaker with a multituberculate mammal.

About these ads

10 thoughts on “Tunisian dinosaur age mammal tracks discovery

  1. Un squelette presque entier d’un dinosaure ayant vécu il y a environ 110 millions d’années a été découvert récemment au sud de Tataouine, par une équipe scientifique composée de chercheurs de l’Office national des mines et de l’Université italienne de Bologne.
    Le spécimen a été découvert à une profondeur de 50 cm de la surface de la terre. La longueur initiale de cet animal préhistorique est estimée à 15 m, selon Habib Aljène, ingénieur à l’Office national des mines.
    Aussi, des empreintes de pas d’un dinosaure carnivore avaient été découvertes dans une montagne à Chenini, dans la même région.
    Tataouine est au Sud de la Tunisie à 550 km environ de Tunis, la capitale.

  2. Pingback: Dinosaurs could swim, new research | Dear Kitty. Some blog

  3. Pingback: Mammals and the extinction of dinosaurs | Dear Kitty. Some blog

  4. Pingback: Spanish dinosaur-age turtle discovered | Dear Kitty. Some blog

  5. Pingback: First fossil mammal found in New Zealand | Dear Kitty. Some blog

  6. Pingback: Two dinosaur species now really extinct, new research | Dear Kitty. Some blog

  7. Pingback: Tunisian fossil primate discovery | Dear Kitty. Some blog

  8. Pingback: Utah dinosaur tracks site open to the public | Dear Kitty. Some blog

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s