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Orbiculiformella mediocircus

Protozoa - Spumellaria - Orbiculiformidae

Discussion

Named by Dumitrica.

Original diagnosis: Test spongy, circular with a large central depression, a rounded sloping periphery and a thick spongy circular ridge between the two.

Original description: Test spongy, circular with a wide central depression bordered by a thick, high, spongy circular ring which is hemispherical in transverse section. Periphery of disc beyond the ring sloping resulting in a round-angled circular band without solid spines but having ine spinules. Meshwork of test with rounded polygonal meshes which are larger on the thick ring decreasing in size on the periphery.

Original remarks: This species is well distinguished from other species of the genus by its larger size and the presence of a thick circular ring between the central depression and sloping periphery.

Etymology: From the Latin medius in the middle and circus circle; noun.

Taxonomy
Orbiculiformella mediocircus was named by Gorican et al. (2006). Its type specimen is 1662D-R09-05 and is a 3D body fossil. Its type locality is Gümüslü, sample 1662D, which is in a Pliensbachian basinal (carbonate) limestone in the Sögütlü dere Formation of Türkiye.

Sister species lacking formal opinion data
O. lomgonensis, O. multibrachiata, O. radiata, O. robusta

Synonymy list
YearName and author
2006Orbiculiformella mediocircus Gorican et al. p. 264 figs. Pl. ORB11

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RankNameAuthor
—Life
—Eukaryota()
classProtozoaGoldfuss 1820
subphylumSarcodinaSchmarda 1871
classReticulareaLankester 1885
subclassRadiolaria(Müller 1858)
RankNameAuthor
orderSpumellariaEhrenberg 1875
superfamilyPyloniaceaHaeckel 1881
familyOrbiculiformidaePessagno 1973
genusOrbiculiformellaKozur and Mostler 1978
speciesmediocircus

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.

†Orbiculiformella mediocircus Gorican et al. 2006
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: silicap
Environment: marinep
Locomotion: passively mobilep
Life habit: planktonicp
Diet: omnivorep
Created: 2005-01-28 01:13:47
Modified: 2005-01-28 03:13:47
Source: p = phylum
Reference: Kiessling 1999

Age range: Pliensbachian or 192.90000 to 184.20000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Pliensbachian192.9 - 184.2Türkiye (Antalya) Orbiculiformella mediocircus (type locality: 81267)