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Cyrtorostra varicostata

Bivalvia - Pectinida - Deltopectinidae

Taxonomy
Cyrtorostra varicostata was named by Branson (1930). It is not a trace fossil. Its type locality is Bull Lake (Ervay Mb), Cedar Ridge, Fremont County, which is in a Lopingian carbonate limestone in the Park City Formation of Wyoming.

It was synonymized subjectively with Cyrtorostra laticostata by Waterhouse (1987).

Synonyms
Synonymy list
YearName and author
1930Cyrtorostra varicostata Branson
1930Aviculopecten alatus Branson p. 47 figs. Pl 11, figs 9,10
1930Aviculopecten alternatus Branson p. 49 figs. Pl 11, figs 4-8
1963Cyrtorostra varicostata Ciriacks p. 57 figs. Pl 9, figs 1-14
1995Cyrtorostra varicostata Newell and Boyd p. 62 figs. 45, 46
2012Cyrtorostra varicostata Quiroz-Barroso et al. p. 168 fig. 4.3

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classBivalvia
—Eubivalvia
subclassAutobranchia(Groblen 1894)
infraclassPteriomorphia(Beurlen 1944)
—OstreomorphiFerussac 1822
RankNameAuthor
—OstreioniFerussac 1822
—OstreataFerussac 1822
superorderOstreiformiiFerussac 1822
orderPectinida(Gray 1854)
suborderAnomiidinaGray 1854
—AviculopectinoideiStarobogatov 1992
superfamilyAviculopectinoideaMeek and Hayden 1864
familyDeltopectinidae
subfamilyCyrtorostrinae()
genusCyrtorostraBranson 1930
speciesvaricostataBranson 1930

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.

†Cyrtorostra varicostata Branson 1930
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Invalid names: Aviculopecten alatus Branson 1930 [synonym], Aviculopecten alternatus Branson 1930 [synonym]
Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
shell height110.3----
valve height95.360.95637.15.1211.2

Composition: low Mg calciteo
Composition 2: aragoniteo
Environment: marineo
Locomotion: stationaryo
Life habit: epifaunalo
Diet: suspension feedero
Vision: blindc
Created: 2007-09-07 02:56:05
Modified: 2009-12-13 03:22:38
Source: o = order, c = class
References: Aberhan et al. 2004, Kiessling 2004

Age range: base of the Asselian to the top of the Capitanian or 298.90000 to 259.51000 Ma

Collections (62 total)


Time interval Ma Country or state Original ID and collection number
Asselian298.9 - 295.5USA (Texas) Cyrtorostra varicostata (43481)
Asselian298.9 - 295.5Mexico Cyrtorostra varicostata (117974)
Kungurian279.3 - 272.3USA (Texas) Cyrtorostra varicostata (43491 43494 43495 43513 43515 43517 43574 81651 101785 105839 105931 105935 105940)
Roadian272.3 - 268.8USA (Texas) Cyrtorostra varicostata (43512 43548 43553 43563 44242 81650 81693 101782 101783 101807 102603 102606 102611 102615 105874)
Wordian266.9 - 264.28USA (Wyoming) Aviculopecten alternatus (11225 11226)
Wordian266.9 - 264.28USA (Texas) Cyrtorostra varicostata (43550 43552 101867 105764 105977 106105)
Wordian266.9 - 264.28USA (Montana) Aviculopecten alternatus (11276)
Capitanian264.28 - 259.51USA (Texas) Cyrtorostra varicostata (106249)
Capitanian264.28 - 259.51USA (Montana) Cyrtorostra varicostata (105348)
Wuchiapingian259.9 - 254.17USA (Montana) Cyrtorostra varicostata (105338)
Wuchiapingian259.9 - 254.17USA (Wyoming) Cyrtorostra varicostata (82599 96806 105279 105290 105350 105366 105510) Cyrtorostra varicostata, Aviculopecten alternatus (11228)
Wuchiapingian259.9 - 254.17USA (Idaho) Cyrtorostra varicostata (96807)
Lopingian259.9 - 252.17USA (Wyoming) Aviculopecten alatus (87156) Cyrtorostra varicostata (82435 87294 96805 105344 105362 105363) Cyrtorostra varicostata, Aviculopecten alternatus (11223 type locality: 87153)
Lopingian259.9 - 252.17USA (Montana) Aviculopecten alternatus (11273) Cyrtorostra varicostata (105370)