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Discovery of New Intracellular Pathogens by Amoebal Coculture and Amoebal Enrichment Approaches

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Published on: October 27, 2013

A new species of

Yuzheng Ke¹, Imran A Rahman^2,3, Hanchen Song¹

¹School of Earth Science, China University of Geosciences (Wuhan), Wuhan, Hubei, People's Republic of China.

|June 5, 2023

Summary

This summary is machine-generated.

A new large turtle species, Nanhsiungchelys yangi, was discovered in China

Keywords:

Anterolateral processes Nanhsiungchelys Nanxiong Basin Phylogenetic analysis Upper Cretaceous

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Area of Science:

Paleontology
Vertebrate Paleontology
Mesozoic Reptiles

Background:

Nanhsiungchelyidae are extinct large turtles from the Cretaceous period.
Fossil discoveries provide insights into the evolution and diversity of ancient chelonians.

Purpose of the Study:

To describe a new species of nanhsiungchelyid turtle, Nanhsiungchelys yangi sp. nov.
To analyze the phylogenetic relationships within the Nanhsiungchelyidae family.
To investigate the potential function of unique carapace features in Nanhsiungchelys yangi.

Main Methods:

Morphological analysis of a well-preserved fossil skull, lower jaw, and partial carapace/plastron.
Comparative osteology with known Nanhsiungchelyidae species.
Phylogenetic analysis using morphological data.
Computational fluid dynamics simulations to assess the function of carapace processes.

Main Results:

Nanhsiungchelys yangi is described, distinguished by a triangular snout and wide anterolateral carapace processes.
Phylogenetic analysis places N. yangi and Nanhsiungchelys wuchingensis as sister taxa.
Anterolateral carapace processes, absent in extant turtles, may have aided in head protection or hydrodynamics.

Conclusions:

The discovery of Nanhsiungchelys yangi expands our understanding of Cretaceous turtle diversity in Asia.
The unique anterolateral processes suggest adaptations for defense or locomotion in aquatic environments.
Nanhsiungchelyids may have employed thermoregulatory behaviors, such as mud-bathing, in hot Cretaceous climates.