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Morphological disparity of early ammonoids


MORPHOLOGICAL CHARACTERS, SYSTEMATIC POSITION AND ...

The gap between the two successive whorls is termed whorl gap. Fig. 3.3: Shell of an ammonoid showing morphological features. In the interior or internal ...

Morphological Disparity during the Ammonoid Recovery after the ...

This project examines how morphological disparity in ammonoid fossils decouples from taxonomic diversity following the Permian mass extinction. I hypothesized ...

extinction selectivity for paleozoic ammonoid suture morphology

Analyses of temporal changes in morphological disparity can yield significant insight into potential selectivity during extinction events. ... During the early ...

The story of the phragmocones. Brief introduction to ammonites.

... differences between nautiloids and ammonoids is that nautiloids had a so called median siphuncle, which was located right in the center of ...

Giant Heteromorph Ammonite - Museum of the Earth

Diplomoceras maximum · Heteromorph ammonites were ammonoid cephalopods with unusual shell shape that were particularly diverse during the ...

Mosasaur - Wikipedia

Mosasaurs are an extinct group of large aquatic reptiles within the family Mosasauridae that lived during the Late Cretaceous. Their first fossil remains ...

Ammonites Part 2 | Struggle and Demise | Evolution Story - YouTube

The tragic evolutionary story of the ammonites spans millions of years and multiple mass extinction events. Despite surviving and thriving ...

The Amazing Shapes of Ammonites | AMNH

When you think of an ammonite, you probably think of a spiral-shelled sea creature. But in fact, this was just one of the many shapes that ammonites took.