PBDB Taxon

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Heckethornia

Artiopoda - Proetida - Dimeropygidae

Taxonomy

Heckethornia was named by McAdams and Adrain (2009). Its type is Heckethornia smithi.

It was assigned to Dimeropygidae by McAdams and Adrain (2009).

Species

H. alticapitis, H. ballionae, H. bowiei, H. hyndeae, H. morrisseyi, H. numani, H. smithi (type species)

Synonymy list

Year	Name and author
2009	Heckethornia McAdams and Adrain p. 880

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

Rank	Name	Author
phylum	Arthropoda	Gravenhorst 1843
class	Artiopoda	Hou and Bergstrom
class	Trilobita	Walch 1771
order	Proetida	Fortey and Owens 1975
family	Dimeropygidae	Hupe 1953
genus	Heckethornia

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. †Heckethornia McAdams and Adrain 2009

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†Heckethornia alticapitis Young 1973

†Heckethornia ballionae McAdams and Adrain 2009

†Heckethornia bowiei McAdams and Adrain 2009

†Heckethornia hyndeae McAdams and Adrain 2009

†Heckethornia morrisseyi McAdams and Adrain 2009

†Heckethornia numani McAdams and Adrain 2009

†Heckethornia smithi McAdams and Adrain 2009

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:

deposit feedero

Vision:

well-developedf

Created:

2010-02-06 03:21:36

Modified:

2010-02-06 05:21:36

Source: f = family, o = order, c = class

References: Fortey and Owens 1999, Alvarez et al. 2008, Aberhan et al. 2004

Age range: base of the Tulean to the top of the Whiterockian or 481.70000 to 457.30000 Ma

Collections (13 total)

Time interval	Ma	Country or state	Original ID and collection number
Tulean	481.7 - 475.3	USA (Nevada)	H. bowiei, H. morrisseyi (106447) H. hyndeae (106448) H. numani, H. hyndeae (106449)
Tulean	481.7 - 475.3	USA (Utah)	H. ballionae (106440 106441) H. bowiei (106442 106443) H. bowiei, H. morrisseyi (106444) H. numani, H. hyndeae (106445) H. smithi (228309)
Blackhillsian	475.3 - 471.3	USA (Utah)	H. alticapitis (105780) Psalikilopsis alticapitis (69261)
Whiterockian	471.3 - 457.3	USA (Utah)	H. alticapitis (106370)