Basic info Taxonomic history Classification Included Taxa
Morphology Ecology and taphonomy External Literature Search Age range and collections

Mimella globosa

Rhynchonellata - Orthida - Plectorthidae

Taxonomy
Pionodema globosa was named by Willard (1928). Its type specimen is M.C.Z. 8609, a shell, and it is a 3D body fossil.

It was recombined as Mimella globosa by Cooper (1956) and Mitchell (1977).

Sister species lacking formal opinion data
M. laticardinia

Synonyms
Synonymy list
YearName and author
1942Mimella superba Butts p. 93 figs. pl. 90, figs. 33-36
1956Mimella globosa Cooper pp. 472 - 474 figs. Plate 37, A, figures 1-4; plate 88, A, figures 1-30; plate 89, A, figures 1-14
1977Mimella globosa Mitchell

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
—Lophophorata
—PanbrachiopodaCarlson and Cohen 2020
phylumBrachiopodaCuvier 1805
RankNameAuthor
subphylumRhynchonelliformeaWilliams et al. 1996
classRhynchonellataWilliams et al. 1996
orderOrthidaSchuchert and Cooper 1932
suborderOrthidinaSchuchert and Cooper 1932
superfamilyPlectorthoideaSchuchert and Le Vene 1929
familyPlectorthidaeSchuchert and Le Vene 1929
genusMimellaCooper 1930
speciesglobosa(Willard 1928)

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.

†Mimella globosa Willard 1928
show all | hide all
Invalid names: Mimella superba Butts 1942 [synonym]
Diagnosis
ReferenceDiagnosis
G. A. Cooper 1956Shell large for the genus, wider thcin long with the greatest width at about the middle; hinge narrow; cardinal extremities obtuse. Sides and anterolateral extremities broadly rounded ; anterior margin nearly straight ; anterior commissure rectimarginate to faintly uniplicate. Costellae fine, about 10 to 13 in 5 mm. at the front margin of a large adult.

Pedicle valve moderately convex in lateral profile with the maximum convexity in the median region ; anterior profile gently and broadly convex ; umbo swollen ; median region and anterior half flattened to faintly sulcate ; lateral areas gently convex ; posterolateral slopes long, moderately steep. Interarea moderately long, apsacline: Muscle field heart shaped, deeply impressed, and with a thickened anterior rim ; adductor track wide ; pallial impressions commonly exquisitely preserved.

Brachial valve strongly convex in lateral profile and with the greatest convexity slightly posterior to the middle; anterior profile strongly convex with the median region somewhat narrowly rounded; umbo swollen, sulcus narrow, shallow, extending from umbo to anterior margin ; flanks bounding sulcus swollen ; lateral and posterolateral slopes long and steep. Notothyrial cavity of moderate size; brachiophore plates somewhat reclining; median ridge short; pallial marks fairly well impressed.
Measurements
No measurements are available
Composition: low Mg calcitep
Entire body: yesg
Adult length: 10 to < 100g
Adult width: 10 to < 100g
Environment: marineuc
Locomotion: stationaryo
Attached: yeso
Life habit: epifaunalo
Diet: suspension feedero
Vision: blindc
Created: 2009-06-02 13:49:22
Modified: 2009-06-02 15:49:22
Source: g = genus, o = order, c = class, p = phylum, uc = unranked clade
References: Hendy 2009, Aberhan et al. 2004, Nesnidal et al. 2013

Age range: base of the Caradoc to the top of the Ashbyan or 458.40000 to 449.60000 Ma

Collections (32 total)


Time interval Ma Country or state Original ID and collection number
Chazyan470.0 - 457.3Canada (Northwest Territories) Mimella globosa (24621)
Chazyan - Caradoc470.0 - 449.5Canada (Northwest Territories) Mimella globosa (25308 25309 25310)
Caradoc458.4 - 449.5USA (Virginia) Mimella globosa (34247 34248 34249 34250 34251 34252 37904) Mimella superba (34007 34028 34029 34030 34031 34032 34152 34153 34167 34168 34169)
Ashbyan457.3 - 449.6USA (Virginia) Mimella superba (33938 33980 33981 33982 33983 33984 33995 33996 33997)
Blackriveran457.3 - 449.6Canada (Northwest Territories) Mimella globosa (24628)