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Katroma brevitubus

Protozoa - Nassellaria - Syringocapsidae

Discussion

Named by Dumitrica & Gorican.

Original description: Test composed of three segments and a tubular extension. Cephalis and thorax short, broadly conical, collar stricture not well pronounced externally. Apical horn indistinct, short, circular in cross-section. Cephalothorax bears small circular pores. Abdomen inflated, spherical, much larger than cephalothorax, covered with mediumsized hexagonal and pentagonal pore frames. Abdomen without circumferential spines. Tubular extension short, inverted conical, porous. Pores similar in size to those of abdomen. Tubular extension closed; in well-preserved specimens it ends with a short spine, circular in crosssection.

Original remarks: Katroma brevitubus n. sp. differs from K. angusta Yeh by having a much shorter terminal tube. It differs from Katroma ninstintsi Carter by having a shorter cephalothorax, more expanded abdomen, and shorter terminal tube.

Etymology: From Latin: brevis,-e (short) and tubus,-i (tube); noun.

Taxonomy
Katroma brevitubus was named by Gorican et al. (2006). Its type specimen is SG 022014 and is a 3D body fossil.

Sister species lacking formal opinion data
K. hocakoeyensis, K. megasphaera, K. ninstintsi, K. ornata, K. sashidai

Synonymy list
YearName and author
2006Katroma brevitubus Dumitrica and Gorican
2006Katroma brevitubus Gorican et al. p. 220 figs. Pl. KAT12

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RankNameAuthor
—Life
—Eukaryota()
classProtozoaGoldfuss 1820
subphylumSarcodinaSchmarda 1871
classReticulareaLankester 1885
subclassRadiolaria(Müller 1858)
RankNameAuthor
superorderPolycystina(Ehrenberg 1838)
orderNassellariaEhrenberg 1875
superfamilyAmphipyndaceaRiedel 1967
familySyringocapsidaeForeman 1973
genusKatromaPessagno and Poisson 1981
speciesbrevitubus

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.

†Katroma brevitubus 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: base of the Late/Upper Pliensbachian to the top of the Pliensbachian or 189.60000 to 182.70000 Ma

Collections (5 total)


Time interval Ma Country or state Original ID and collection number
Sinemurian - Pliensbachian199.3 - 182.7Japan Syringocapsa sp. B (119995 119996)
Late/Upper Pliensbachian189.6 - 183.0Austria (Styria) Katroma brevitubus (95555)
Early/Lower Toarcian183.0 - 182.0Japan Katroma brevitubus (124830) Syringocapsa sp. D (51710)