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Flexicalymene retrorsa

Trilobita - Phacopida - Calymenidae

Taxonomy
Calymene meeki retrorsa was named by Foerste (1910). It is a 3D body fossil. Its type locality is Half a mile above the mouth of Silver creek, east of Dunlapsville, which is in a Richmondian offshore ramp packstone/mudstone in the Waynesville Formation of Indiana.

It was recombined as Calymene retrorsa by Foerste (1919); it was recombined as Flexicalymene (Flexicalymene) retrorsa by Owen (1986); it was recombined as Flexicalymene retrorsa by Hunda and Hughes (2007).

Subspecies

Synonymy list
YearName and author
1910Calymene meeki retrorsa Foerste p. 85 figs. pl. 3 f. 19
1919Calymene retrorsa Foerste p. 76
1986Flexicalymene (Flexicalymene) retrorsa Owen
2007Flexicalymene retrorsa Hunda and Hughes pp. Table A1

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
EcdysozoaAguinaldo et al. 1997
Panarthropoda
phylumArthropodaLatreille 1829
subphylumArtiopoda(Hou and Bergstrom)
RankNameAuthor
classTrilobitaWalch 1771
orderPhacopidaSalter 1864
suborderCalymeninaSwinnerton 1915
familyCalymenidaeMilne-Edwards 1840
subfamilyFlexicalymeninae
genusFlexicalymene
speciesretrorsa()

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.

Flexicalymene retrorsa Foerste 1910
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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
Adult height: 1.0 to < 10g
Spines: noneg
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: actively mobileg
Life habit: nektobenthicg
Diet: carnivoref
Vision: well-developedf
Created: 2009-06-09 12:08:00
Modified: 2009-07-20 15:30:25
Source: g = genus, f = family, c = class
References: Harrington et al. 1959, Hendy 2009, Aberhan et al. 2004

Age range: base of the Maysvillian to the top of the Richmondian or 450.20000 to 445.50000 Ma

Collections (11 total)


Time interval Ma Country or state Original ID and collection number
Maysvillian450.2 - 449.6USA (Indiana) Flexicalymene retrorsa (192316)
Maysvillian450.2 - 449.6USA (Ohio) Flexicalymene retrorsa (192314 192315)
Maysvillian - Richmondian450.2 - 445.5USA (Ohio) Flexicalymene retrorsa (192312)
Maysvillian - Richmondian450.2 - 445.5USA (Kentucky) Flexicalymene retrorsa (192311)
Richmondian449.6 - 445.5USA (Ohio) Flexicalymene minuens (192307 192318) Flexicalymene retrorsa (192308 192309)
Richmondian449.6 - 445.5Canada (Québec) Flexicalymene retrorsa (192338)
Richmondian449.6 - 445.5USA (Indiana) Flexicalymene minuens (192305)