PBDB Taxon

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Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Baojingia quadrata

Artiopoda - Ptychopariida - Lisaniidae

Taxonomy

Eoshengia quadrata was named by Yang (1977) [Eoshengia quadrata Yang in Zhou et al. 1977].

It was recombined as Baojingia quadrata by Peng et al. (2004).

Sister species lacking formal opinion data

B. jiudiantangensis, B. paralala, B. tungrenensis, B. youshuiensis

Synonyms

Eoshengia paratenuis was named by Yang et al. (1993). It is not extant. Its type locality is Xiuzigou, bed 10b, which is in a Wangcunian/Guzhangian slope limestone/shale in the Xijiadian Formation of China.

It was synonymized subjectively with Baojingia quadrata by Peng et al. (2004).
Eoshengia rigida was named by Yang et al. (1993). It is not extant. Its type locality is Xiuzigou, bed 10b, which is in a Wangcunian/Guzhangian slope limestone/shale in the Xijiadian Formation of China.

It was synonymized subjectively with Baojingia quadrata by Peng et al. (2004).
Lisaniella elongataformis was named by Ergaliev (1980).

It was synonymized subjectively with Baojingia quadrata by Peng et al. (2004).
Eoshengia paragenalata was named by Yang (1977) [Eoshengia paragenalata Yang in Zhou et al. 1977].

It was synonymized subjectively with Baojingia quadrata by Peng et al. (2004).
Eoshengia xinjiangensis was named by Zhang (1981).

It was synonymized subjectively with Baojingia quadrata by Peng et al. (2004).

Synonymy list

Year	Name and author
1977	Eoshengia paragenalata Yang p. 51 figs. 17, 18, ? 19
1977	Eoshengia quadrata Yang p. 174 figs. pl. 51, figs. 14, 15
1980	Lisaniella elongataformis Ergaliev
1981	Eoshengia xinjiangensis Zhang p. 172 figs. pl. 63, figs. 16-19
1993	Eoshengia paratenuis Yang et al.
1993	Eoshengia rigida Yang et al. p. 195 figs. pl. 16, figs. 12, 13
2004	Baojingia quadrata Peng et al. pp. 104 - 107 figs. Plate 38, figures 10-13; Text-figure 17

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Ecdysozoa	Aguinaldo et al. 1997
—	Panarthropoda
phylum	Arthropoda	Gravenhorst 1843

Rank	Name	Author
class	Artiopoda	Hou and Bergstrom
class	Trilobita	Walch 1771
subclass	Libristoma
order	Ptychopariida	Swinnerton 1915
family	Lisaniidae	Chang 1963
genus	Baojingia	Yang 1977
species	quadrata	(Yang 1977)

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.

†Baojingia quadrata Yang 1977

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Invalid names: Eoshengia paragenalata Yang 1977 [synonym], Eoshengia paratenuis Yang et al. 1993 [synonym], Eoshengia rigida Yang et al. 1993 [synonym], Eoshengia xinjiangensis Zhang 1981 [synonym], Lisaniella elongataformis Ergaliev 1980 [synonym]

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

low Mg calcitec

Composition 2:

chitinc

Ontogeny:

molting, addition of partsc

Environment:

marinec

Locomotion:

fast-movingc

Life habit:

low-level epifaunalc

Diet:

carnivorec

Vision:

well-developedf

Created:

2010-01-04 05:23:59

Modified:

2010-01-04 07:23:59

Source: f = family, c = class

References: Whittington et al. 1997, Aberhan et al. 2004

Age range: base of the Zhanaarykian to the top of the Ayusokkanian or 503.00000 to 497.00000 Ma

Collections (18 total)

Time interval	Ma	Country or state	Original ID and collection number
Wangcunian - Guzhangian	504.5 - 497.0	China (Henan)	Eoshengia paratenuis, Eoshengia rigida (127076)
Zhanaarykian	503.0 - 500.5	Kazakhstan	Lisaniella elongataformis (118102)
Guzhangian	500.5 - 497.0	China (Hunan)	Baojingia quadrata (49176 126303 126306 126313)
Guzhangian	500.5 - 497.0	China (Henan)	Eoshengia xinjiangensis (127077)
Ayusokkanian	499.5 - 497.0	Kazakhstan	Eoshengia quadrata (118179 118182 118186) Lisaniella elongataformis (9943 9944 9947 9949 118158 118164 118166) Lisaniella elongataformis, Eoshengia quadrata (118177)