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Mediospirifer audaculus

Rhynchonellata - Spiriferida - Spinocyrtiidae

Taxonomy
Delthyris audacula was named by Conrad (1842).

It was recombined as Spirifer audacula by Prosser and Kindle (1913); it was recombined as Brachyspirifer audaculus by Cooper (1944); it was recombined as Mediospirifer audaculus by Johnson (1970).

Sister species lacking formal opinion data

Synonymy list
YearName and author
1842Delthyris audacula Conrad p. 262
1913Spirifer audacula Prosser and Kindle pp. 192 - 193 figs. Plate XVIII, Figs. 7-9
1944Brachyspirifer audaculus Cooper p. 346
1970Mediospirifer audaculus Johnson p. 199

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
Lophophorata
PanbrachiopodaCarlson and Cohen 2020
phylumBrachiopodaCuvier 1805
RankNameAuthor
subphylumRhynchonelliformeaWilliams et al. 1996
classRhynchonellataWilliams et al. 1996
orderSpiriferida
suborderSpiriferidina
superfamilyCyrtospiriferoideaTermier and Termier 1949
familySpinocyrtiidaeIvanova 1959
genusMediospirifer
speciesaudaculus(Conrad 1842)

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.

Mediospirifer audaculus Conrad 1842
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Diagnosis
ReferenceDiagnosis
C.M. Prosser and E.M. Kindle 1913Shell medium size; valves moderately convex in young specimens, becoming ventricose in old shells; hinge-line generally ex· tended beyond the width of the shell below. Ventral valve usually more convex than the dorsal; incurved beak; cardinal area commonly of more than medium height; longitudinally striated and divided in the middle by the delthyrium which is about twice as high as wide; mesial sinus well defined, extending to the apex, of moderate width, rather deep and generally rounded at the bottom. Dorsal valve moderately convex; beak small and slightly incurved; cardinal area linear; mesial fold prominent, rising abruptly at the sides and rounded or slightly flattened on top; cardinal angles slightly reflected. Surface marked by twl'nty or more simple plications on each side of the fold and sinus and the principal ones, especially of the ventral valve, are often markl'd along the center by a threadlike groove; toward the front are numerous, often imbricating, concentric lines.
Measurements
No measurements are available
Composition: low Mg calcitep
Environment: marineuc
Locomotion: stationaryo
Attached: yesp
Life habit: epifaunalo
Diet: suspension feedero
Vision: blindc
Created: 2004-02-28 14:12:52
Modified: 2004-02-28 16:12:52
Source: o = order, c = class, p = phylum, uc = unranked clade
References: Nesnidal et al. 2013, Aberhan et al. 2004

Age range: Givetian or 387.70000 to 382.70000 Ma

Collections (186 total)


Time interval Ma Country or state Original ID and collection number
Eifelian - Givetian393.3 - 382.7Libya Mediospirifer audaculus (36178)
Middle Devonian393.3 - 382.7USA (New York) Mediospirifer audaculus (91091 91215 91216 91217 91225 91226 91228 91229 91233 91237 91239 91240 91242 91243 91244 91245 91246 91267 91268 91269 91271 91277 91278 91281)
Givetian387.7 - 382.7USA (Ohio) Brachyspirifer audaculus (38459 38460) Mediospirifer audaculus (38458) Mediospirifer audaculus, Brachyspirifer audaculus (38457)
Givetian387.7 - 382.7USA (Michigan) Brachyspirifer audaculus (38475 38476)
Givetian387.7 - 382.7USA (Indiana) Mediospirifer audaculus (55670 65999 66002 66003 66055)
Givetian387.7 - 382.7USA (New York) Brachyspirifer audaculus (10459) Mediospirifer audaculus (5661 5664 5665 8722 8723 8724 8725 8726 8727 8728 8729 8735 8813 8814 8815 8816 8817 8818 8819 8821 8822 8823 8825 8827 8828 8829 8830 8832 8833 8925 8932 8959 8962 8964 8968 8978 8980 8982 8983 8984 8987 8989 8991 8993 8994 8998 9000 9001 9002 9003 9006 9007 9014 9015 9016 9017 9018 9019 9020 9028 9029 9364 9366 10101 10107 10108 10109 10110 10119 86263 86641 86643 86645 86646 86657 89648 89651 89652 89653 89654 89655 89656 89657 89658 89659 89660 89661 89665 89667 89675 89676 89684 89685 89686 89688 89690 89695 89696 89697 89701 89703 89721 89726 89727 89729 89739 89741 89744 89756 89757 89766 89772 89774 89791 89812 89813 89876 89877 89878 89879 89882 89883 89885 89888 89899 94410 96209 96210 96211 96212 96213 96342 96343 96346 111330 111331)
Givetian387.7 - 382.7USA (Pennsylvania) Mediospirifer audaculus (9657 9659 9661 9662 9704 9707 9888 9893 9905 9911 9926)
Givetian387.7 - 382.7USA (West Virginia) Mediospirifer audaculus (96331)
Givetian387.7 - 382.7Libya Mediospirifer audaculus (36189)