Published January 30, 2023 | Version v1
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Data from: Allometry in Late Devonian Podocopa ostracods (Crustacea) and its implications for Ostracoda ontogeny

  • 1. Nanjing Institute of Geology and Paleontology

Description

Podocopa ostracods abounds in various marine and non-marine habitats since the early Palaeozoic and leave diversified fossil records in strata worldwide. They are particularly useful for stratigraphic correlation and paleoenvironmental and paleogeographical reconstructions. However, being the most numerous ostracods during the Palaeozoic, their origins, evolution, ontogeny and phylogeny remain poorly defined. This paper represents the first study of morphological variation in Devonian Platycopida (an order of Podocopa) ostracods using a geometric morphometric approach. Our results identify substantial shape variation for Cribroconcha honggulelengensis from the Upper Devonian Hongguleleng Formation of western Junggar, NW China, demonstrating a remarkable change to those juveniles between stages A-3 and A-2. Using linear regressions between Principal component scores from right lateral view and carapace length, we demonstrate allometric growth patterns for the species C. honggulelengensis.The body plan of C. honggulelengensis developed along with the ontological variable, i.e., from an ovate outline with rare pores to an oblong outline with dense and large pores. Environmental factors play a major role in shape determination during ontogeny of C. honggulelengensis.

Notes

s1: Size information (length and height) and 74 Principal components (PC) of all the 178 specimens of Cribroconcha honggulelengensis Song & Crasquin, 2017.

Funding provided by: Strategic Priority Research Program (B) of Chinese Academy of Sciences*
Crossref Funder Registry ID:
Award Number: XDB26000000

Funding provided by: National Natural Science Foundation of China
Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100001809
Award Number: 41802002

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