PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Acratia changxingensis

Ostracoda - Podocopida - Acratiidae

Taxonomy

Pseudobythocypris changxingensis was named by Shi (1987). Its type specimen is NIGP 91861 and is a 3D body fossil. Its type locality is Sample CH2-2, which is in a Changhsingian carbonate limestone in the Changxing Formation of China.

It was recombined as Acratia changxingensis by Crasquin-Soleau et al. (2004), Crasquin and Forel (2010).

Sister species lacking formal opinion data

A. adunca, A. clinata, A. deloi, A. gassanovae, A. ljubzovi, A. magna, A. mucronata, A. pentagona, A. silincula, A. silincula, A. zadonica

Synonymy list

Year	Name and author
1987	Pseudobythocypris changxingensis Shi p. 57 figs. Pl 13, figs 18-32
2004	Acratia changxingensis Crasquin-Soleau et al. figs. Pl 3, figs 21-24
2010	Acratia changxingensis Crasquin and Forel p. 358 fig. 20H

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Ecdysozoa	Aguinaldo et al. 1997
—	Panarthropoda
phylum	Arthropoda	Latreille 1829
—	Deuteropoda
—	Mandibulata
—	Pancrustacea	Zrzavý and Štys 1997

Rank	Name	Author
—	Hymenostraca	(Rolfe 1969)
superclass	Oligostraca	Zrzavý et al. 1997
class	Ostracoda
subclass	Podocopa	Sars 1865
order	Podocopida	Sars 1866
suborder	Bairdiocopina	Grundel 1967
superfamily	Bairdioidea	(Sars 1888)
family	Acratiidae	Gründel 1962
genus	Acratia	Delo 1930
species	changxingensis	()

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

†Acratia changxingensis Shi 1987

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Diagnosis

No diagnoses are available

Measurements

part	N	mean	minimum	maximum	median	s.d.
carapace height	3	0.423	0.420	0.430	0.420	0.006

Composition:

low Mg calcitec

Environment:

hypersaline, marine, brackish, freshwaterc

Locomotion:

actively mobilec

Life habit:

epifaunalo

Diet:

detritivoreo

Diet 2:

grazero

Vision:

limitedc

Created:

2010-02-05 02:00:00

Modified:

2010-02-23 23:16:56

Source: o = order, c = class

References: Kiessling 2004, Jell and Adrain 2002

Age range: Changhsingian or 254.14000 to 251.90200 Ma

Collections (18 total)

Time interval	Ma	Country or state	Original ID and collection number
Changhsingian	254.14 - 251.902	China (Fujian)	Pseudobythocypris changxingensis (121208 121289 121291 121292 121293)
Changhsingian	254.14 - 251.902	China (Zhejiang)	Acratia changxingensis (97896) Pseudobythocypris changxingensis (117592 117601 117655 117664 117665 117666 117667 117668 117669 117670 117673 127570)