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Impletosphaeridium polyozum
Impletosphaeridium polyozon (Brosius, 1963) Islam, 1993
Originally Baltisphaeridium (acritarch), subsequently Cleistosphaeridium?, thirdly Surculosphaeridium, fourthly (and now) Impletosphaeridium?. Questionable assignment: Islam (1993, p.87).
The epithet is derived from the Greek for "much branched", as implied by Brosius (1963). Since Principle 5 of the I.C.N. states that taxon names are to be treated as Latin, this epithet should be rendered as "polyozum" in agreement with the neuter gender of the generic name ("polyoza" would be the feminine form and "polyozus" the masculine form).
Holotype: Brosius, 1963, pl.1, fig.6.
Age: Late Oligocene.
Original description Brosius 1963 [translation PKB 2024]: Baltisphaeridium polyozon n. sp. (Plate 1, Figure 6; Plate 6, Figure 5, Figure 2 (2 a-d))
Diagnosis: Strong, fleshy, massive appendages with a widened base sit irregularly on a smooth, delicate capsule. They usually fork sim in half. The branches usually split into 2 (but also 3-5) parts, the ends of which (can only be observed under the highest magnification) can be slit into 3-7 small pins. There are usually more than 20 processes. Basal adhesions are not uncommon. Round to oval loopholes occur. The specimen shown by SCHERER under Figure 1 probably belongs to this species. However, it appears to be more oval than most of our shapes.
Derivatio nominis: πολύοζοϛ = full of branches.
Locus typicus: Firnsbach borehole (58-63.50 m).
Stratum typicum: Kassel sea sand (Upper Oligocene).
Holotype: Ri 23/36 (Plate 1 Image 6).
Paratypoid: Ri 23/37 (Plate 6, Figure 5).
Dimensions of the holotype: diameter of the capsule: 40 μ, length of the processes: 20 μ. Average capsule diameter: 33-36 μ. Length of the processes: 18-24 μ. Number of specimens examined: 25.
Occurrence: Glimmerode, Stolzenbach (15-18.3 m), Oberkaufungen 5/6 (42.8-44 m), Firnsbach (53-58 m).
Originally Baltisphaeridium (acritarch), subsequently Cleistosphaeridium?, thirdly Surculosphaeridium, fourthly (and now) Impletosphaeridium?. Questionable assignment: Islam (1993, p.87).
The epithet is derived from the Greek for "much branched", as implied by Brosius (1963). Since Principle 5 of the I.C.N. states that taxon names are to be treated as Latin, this epithet should be rendered as "polyozum" in agreement with the neuter gender of the generic name ("polyoza" would be the feminine form and "polyozus" the masculine form).
Holotype: Brosius, 1963, pl.1, fig.6.
Age: Late Oligocene.
Original description Brosius 1963 [translation PKB 2024]: Baltisphaeridium polyozon n. sp. (Plate 1, Figure 6; Plate 6, Figure 5, Figure 2 (2 a-d))
Diagnosis: Strong, fleshy, massive appendages with a widened base sit irregularly on a smooth, delicate capsule. They usually fork sim in half. The branches usually split into 2 (but also 3-5) parts, the ends of which (can only be observed under the highest magnification) can be slit into 3-7 small pins. There are usually more than 20 processes. Basal adhesions are not uncommon. Round to oval loopholes occur. The specimen shown by SCHERER under Figure 1 probably belongs to this species. However, it appears to be more oval than most of our shapes.
Derivatio nominis: πολύοζοϛ = full of branches.
Locus typicus: Firnsbach borehole (58-63.50 m).
Stratum typicum: Kassel sea sand (Upper Oligocene).
Holotype: Ri 23/36 (Plate 1 Image 6).
Paratypoid: Ri 23/37 (Plate 6, Figure 5).
Dimensions of the holotype: diameter of the capsule: 40 μ, length of the processes: 20 μ. Average capsule diameter: 33-36 μ. Length of the processes: 18-24 μ. Number of specimens examined: 25.
Occurrence: Glimmerode, Stolzenbach (15-18.3 m), Oberkaufungen 5/6 (42.8-44 m), Firnsbach (53-58 m).