PBDB Taxon

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

Bairdia trianguliformis

Ostracoda - Podocopida - Bairdiidae

Taxonomy

Bairdia trianguliformis was named by Chen (1958). Its type specimen is NIGP 9082 and is a 3D body fossil.

Sister species lacking formal opinion data

B. africana, B. altifrons, B. anomala, B. antamputata, B. auricula, B. austriaca, B. billjohnsoni, B. birinae, B. bradfieldi, B. cassiana, B. ciscoensis, B. colonensis, B. condylus, B. confragosaeformis, B. crebra, B. croneisi, B. croskeina, B. cultrijugati, B. dissortis, B. dolicha, B. egorovi, B. eleziana, B. exoura, B. fabaeformis, B. fusca, B. gibbosa, B. gosportensis, B. haworthi, B. hilda, B. hisingeriformis, B. hispida, B. hiwannensis, B. hondurasensis, B. isoscelata, B. kaschewarovae, B. kawakensis, B. kelleri, B. kinderhookensis, B. knuepferi, B. legumen, B. longisetosa, B. meishanensis, B. moorei, B. mucronata, B. multihilosa, B. nitida, B. oklahomensis, B. opisthorhadina, B. paraproba, B. peneovoidea, B. philippovae, B. pinnula, B. proxischimensis, B. psiegorkiensis, B. rectifrontis, B. singularis, B. soldadensis, B. subcitriformis, B. subeleziana, B. subvexa, B. summa, B. turgida, B. urodeliformis, B. virga, B. feliumgibba, B. pompillioides, B. gliberti

Synonymy list

Year	Name and author
1958	Bairdia trianguliformis Chen p. 222 figs. Pl 6, figs 9-12
1964	Bairdia trianguliformis Ishizaki p. 154 figs. Pl 19, figs 4,5
1987	Bairdia trianguliformis Shi and Chen p. 37 figs. Pl 2, figs 1-8
2017	Bairdia trianguliformis Chitnarin p. 666 fig. 10G,H

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Ecdysozoa
—	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	Bairdiidae	Sars 1888
genus	Bairdia
species	trianguliformis

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.

†Bairdia trianguliformis Chen 1958

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Diagnosis

No diagnoses are available

Measurements

part	N	mean	minimum	maximum	median	s.d.
carapace height	3	0.777	0.700	0.870	0.770	0.085
valve height	1	0.660	-	-	-	-

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: base of the Asselian to the top of the Changhsingian or 298.90000 to 252.17000 Ma

Collections (10 total)

Time interval	Ma	Country or state	Original ID and collection number
Asselian	298.9 - 295.5	Thailand	Bairdia trianguliformis (223954)
Sakmarian	293.52 - 290.1	Thailand	Bairdia trianguliformis (137893 223957)
Kungurian	279.3 - 272.3	China (Jiangsu)	Bairdia trianguliformis (142162 142175)
Wordian	266.9 - 264.28	Thailand	Bairdia trianguliformis (137918 223978)
Capitanian	264.28 - 259.51	Japan	Bairdia trianguliformis (109844)
Wuchiapingian	259.9 - 254.17	China (Sichuan)	Bairdia trianguliformis (148477)
Changhsingian	254.17 - 252.17	China (Sichuan)	Bairdia trianguliformis (148507)