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Tetraphycus conjunctus
Tetraphycus conjunctus Lo Precambr. Res., 13: 150. Nov 1980
- Name
- Tetraphycus conjunctus
- Rank
- Species
- Original spelling
- conjunctum
- Generic Name
- [Genus] Tetraphycus
- Authors (Pub.)
- Lo S.-C. C.
- Publication
- Microbial fossils from the lower Yudoma Suite, earliest Phanerozoic, eastern Siberia [1980/11]
- Journal
- Precambrian research
- Volume
- 13
- Page number
- 150
- Year
- 1980
- Fossil Status
- vesicles
- Stratigraphy
- Ediacaran
- Strat. comment
- 600; Yudoma Formation
- Location
- right bank of the Aldan River, about 12 km upstream from the mouth of the Khanda (or Belaya) River, Yakutia republic, Russian Federation
- Paleoregion
- Pannotia (Siberia)
Data for Holotypus
- Repository
- University of California Santa Barbara, Biogeology Clean Laboratory, Santa Barbara, USA
- Repository Number
- C670(1); 13 mm above and 20.4 mm to the right of the reference "×"
- Diagnosis
- Cell-like units spheroidal, ellipsoidal or hemispheroidal. Surface smooth, light- to dark-brown. Wall thin, distinct, dark-brown. Cell-like units undivided, joined in groups of two to five, commonly in planar tetrads, occasionally in dyads, overlapped triads and chained triads; rarely in packets of five. Usually a common envelope and adherent matrix for each group appears to be absent. Rarely, planar tetrads are surrounded by single or double-layered common envelopes, but such envelopes do not surround individual cell-like units. Group of two to five cell-like units may be solitary or in planar clusters (one or two layers). Common envelope or encompassing amorphous matrix is not present in these clusters. Diameter of spheroids 3.1-- 6.2/~m, averaging 4.9 ~m (standard deviation = 0.78 ~m; 37 specimens measured). Clusters usually in groups of 18--45 spheroids and ellipsoids, ranging from 20--50 ~m across.
