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Leiostegium (Perischodory)

Trilobita - Corynexochida - Leiostegiidae

Taxonomy
Perischodory was named by Raymond (1937) [Sepkoski's age data: O Trem-u]. It is not extant.

It was reranked as Leiostegium (Perischodory) by Berg and Ross (1959); it was reranked as Lloydia (Perischodory) by Lochman (1965).

It was assigned to Leiostegium by Berg and Ross (1959); to Lloydia by Lochman (1965); and to Corynexochida by Sepkoski (2002).

Synonymy list
YearName and author
1937Perischodory Raymond
1959Leiostegium (Perischodory) Berg and Ross
1965Lloydia (Perischodory) Lochman
2002Perischodory Sepkoski

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
EcdysozoaAguinaldo et al. 1997
Panarthropoda
phylumArthropodaLatreille 1829
subphylumArtiopoda(Hou and Bergstrom)
RankNameAuthor
classTrilobitaWalch 1771
orderCorynexochida
suborderLeiostegiinaBradley 1925
superfamilyLeiostegioideaBradley 1925
familyLeiostegiidaeBradley 1925
genusLeiostegiumRaymond 1913
subgenusPerischodory(Raymond 1937)

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.

Subg. †Leiostegium (Perischodory) Raymond 1937
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Perischodory incompertum Berg and Ross 1959
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Entire body: yesg
Adult length: 10 to < 100g
Adult width: 10 to < 100g
Spines: minorg
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: actively mobileo
Life habit: nektobenthico
Diet: carnivoreo
Vision: well-developedf
Created: 2009-06-10 08:32:32
Modified: 2009-06-10 10:32:32
Source: g = genus, f = family, o = order, c = class
References: Hendy 2009, Hendy et al. 2009, Aberhan et al. 2004, Whittington et al. 1997

Age range: base of the Tremadoc to the top of the Demingian or 486.40000 to 483.40000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Demingian486.85 - 483.4USA (Montana) Lloydia incomperta (69026)
Tremadoc486.4 - 477.1Canada (Northwest Territories) Perischodory incompertum (192761)