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Ischyrotoma parallela

Trilobita - Proetida - Dimeropygidae

Ischyrotoma parallela was named by Boyce (1989) [Paratype: NFM F-86, F-112.]. Its type specimen is NFM F-178, a cephalon/head, and it is a 3D body fossil. Its type locality is BH-95A-114, which is in a Cassinian peritidal lime mudstone/wackestone in the Catoche Formation of Canada.

Sister species lacking formal opinion data

View classification of included taxa

Synonymy list
YearName and author
1989Ischyrotoma parallela Boyce p. 60 figs. Pl. 34, fig. 7-8

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EubilateriaAx 1987
phylumArthropodaLatreille 1829
classTrilobitaWalch 1771
orderProetidaFortey and Owens 1975
familyDimeropygidaeHupe 1953
genusIschyrotomaRaymond 1925

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.

No diagnoses are available
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Adult length: 10 to < 100g
Adult width: 10 to < 100g
Adult height: 1.0 to < 10g
Spines: noneg
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingc
Life habit: low-level epifaunalc
Diet: deposit feedero
Vision: well-developedf
Created: 2009-06-10 08:14:46
Modified: 2009-06-10 10:14:46
Source: g = genus, f = family, o = order, c = class
References: Aberhan et al. 2004, Hendy 2009, Alvarez et al. 2008, Fortey and Owens 1999

Age range: base of the Cassinian to the top of the Blackhillsian or 478.60000 to 471.80000 Ma

Collections (8 total)

Time interval Ma Country or state Original ID and collection number
Tulean485.4 - 471.8Norway (Spitsbergen) Ischyrotoma parallela (189832 189837)
Tulean - Blackhillsian485.4 - 471.8Canada (Newfoundland and Labrador) Ischyrotoma parallela (196381)
Jeffersonian485.4 - 468.1Canada (Newfoundland) Ischyrotoma parallela (195756 195785)
Jeffersonian485.4 - 468.1Canada (Newfoundland and Labrador) Ischyrotoma parallela (133147)
Cassinian478.6 - 468.1Canada (Newfoundland and Labrador) Ischyrotoma parallela (type locality: 106238 106239)