PBDB Taxon

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

Hadrotreta

Lingulata - Acrotretida

Taxonomy

Hadrotreta was named by Rowell (1966).

It was assigned to Acrotretinae by Brock and Cooper (1993); to Acrotretidae by Williams et al. (2000); to Acrotretida by Bengtson (1992) and Sepkoski (2002); and to Acrotretoidea by Skovsted et al. (2017).

Species

H. primaea, H. taconica

Synonymy list

Year	Name and author
1966	Hadrotreta Rowell
1992	Hadrotreta Bengtson p. 1030
1993	Hadrotreta Brock and Cooper p. 780
2000	Hadrotreta Williams et al. p. 112
2002	Hadrotreta Sepkoski
2017	Hadrotreta Skovsted et al.

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Spiralia
superphylum	Lophotrochozoa
—	Lophophorata

Rank	Name	Author
—	Panbrachiopoda	Carlson and Cohen 2020
phylum	Brachiopoda	Cuvier 1805
subphylum	Linguliformea	Williams et al. 1996
class	Lingulata	Gorjansky and Popov 1985
order	Acrotretida	Kuhn 1949
superfamily	Acrotretoidea
genus	Hadrotreta	Rowell 1966

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.

G. †Hadrotreta Rowell 1966

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†Hadrotreta primaea Walcott 1902

†Hadrotreta taconica Walcott 1887

†Vandalotreta djagoran Walcott 1902

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

phosphatico

Entire body:

yesg

Adult length:

1.0 to < 10g

Adult width:

1.0 to < 10g

Folds:

noneg

Ribbing:

noneg

Spines:

noneg

Internal reinforcement:

noneg

Environment:

marineuc

Locomotion:

stationaryo

Attached:

yeso

Life habit:

epifaunalo

Diet:

suspension feedero

Vision:

blindc

Comments:

BODY SIZE: Data from Williams et al. (2000).g

Created:

2009-06-04 15:08:13

Modified:

2009-06-04 17:08:13

Source: g = genus, o = order, c = class, uc = unranked clade

References: Hendy 2009, Nesnidal et al. 2013, Aberhan et al. 2004

Age range: base of the Toyonian to the top of the Delamaran or 512.90000 to 506.50000 Ma

Collections (71 total)

Time interval	Ma	Country or state	Original ID and collection number
Caerfai	538.8 - 509.0	USA (Nevada)	H. sp. (190)
Lenian	516.0 - 510.2	Antarctica (South Shetland Islands)	Vandalotreta djagoran (49692)
Dyeran	515.3 - 511.2	USA (Nevada)	H. primaea (96417)
Dyeran	515.3 - 511.2	Canada (Newfoundland)	H. sp., H. taconica (196284) H. taconica (196282 196283 196285 196286 196287 196288 196289 196295 196296 196318 196319 196320 196321 196322 196324 196328 196330 196331 196333 196335 196337 196339 196340 196342 196346 196347 196348 196349 196350 196351 196352 196353)
Dyeran	515.3 - 511.2	Canada (Labrador)	H. taconica (195907 196252 196253 196254 196256 196262 196263)
Dyeran	515.3 - 511.2	USA (Pennsylvania)	H. sp. (97879)
Toyonian	512.9 - 510.2	Australia (South Australia)	H. primaeva (64460 64461 64462) H. sp. (64459) Vandalotreta djagoran (96929)
Delamaran	511.2 - 506.5	USA (California)	Acrotreta primaeva (219701)
Solvan	510.2 - 504.5	Australia (New South Wales)	H. primaeva (56531)
Middle Cambrian	509.0 - 497.0	Australia (Northern Territory)	H. djagoran (59989 59991 59993 59994 59998 59999 60000 60014 60015 60018 60019 60022 60026 60028 60030 60034 60035 60045 60075) H. nyapungensis (60027)