Tribosphenic mammal from the North American Early Cretaceous

Article Abstract:

A new tribosphenic mammal from the Early Cretaceous of North America has been found in Carbon County, MT. This new taxon differs from primitive Tribosphenida in having a semimolarized last premolar and only three molars. It differs from early marsupials and marsupial-like taxa in postcanine tooth formula. The Meckelian groove and labial mandibular foramen, found in several Cretaceous mammals, are not present. This is clearly a tribosphenic mammal, as shown by the broad, basined, three-cusped molar talonids.

Geology, Stratigraphic, Stratigraphy, Cretaceous period, Mammals, Fossil, Fossil mammals

---

Dual origin of tribosphenic mammals

Article Abstract:

Advanced mammals are thought to have evolved in the southern hemisphere and moved north, but new research into the origin of tribosphenic mammals reveals they evolved both in the north and south.

Evolution, Paleontology, Paleobiogeography

---

Re-crowning mammals

Article Abstract:

The article discusses the history of the evolution of mammals through the study of their molecular structure and their fossils.

Science & research, Natural history, Molecular structure, Morphology (Animals), Animal morphology

Similar abstracts:

• Abstracts: Ice-sheet variability around the North Atlantic Ocean during the last deglaciation. Ice sheets by volume
• Abstracts: The role of mat-forming diatoms in the formation of Mediterranean sapropels. Early Oligocene initiation of North Atlantic deep water formation
• Abstracts: Correlation between climate events in the North Atlantic and China during the last glaciation. Evolution of Asian monsoons and phased uplift of the Himalaya-Tibetan plateau since Late Miocene times
• Abstracts: Visible flicker from invisible patterns. Realignment of cones after cataract treatment. Orientation-selective adaptation and tilt after-effect from invisible patterns
• Abstracts: Creation in silicon. Lighter than air. Formally speaking

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.