Minylitha convallis

Set number: 468

1
2

10µm

Minylitha convallis, Late Miocene, Gulf of Mexico

Set number: 469

1
2

10µm

Minylitha convallis, Late Miocene, Gulf of Mexico

Set number: 470

1
2

10µm

Minylitha convallis, Late Miocene, Gulf of Mexico

Set number: 471

1
2

10µm

Minylitha convallis, Late Miocene, Gulf of Mexico

Set number: 472

1
2

10µm

Minylitha convallis, Late Miocene, Gulf of Mexico

Final Epithet

Minylitha convallis Bukry, 1973

Basionym

Minylitha convallis Bukry, 1973

Description

A kite shape nannolith in plan view whereas dog-bone shape at the side view. Having central depressions on both sides. The plan view is non-birefringent [arguable weekly birefringent] but strongly birefringent on its side view.

Remarks

Minylitha convallis is distinguished from Minylitha cancellata Browning & Bergen in Browning et al., (2017) by lacking longitudinal and traverse ridges.

References

Browning, E., Bergen, J. A., Blair, S. A., Boesiger, T. M. & de Kaenel, E., (2017): Late Miocene to Late Pliocene taxonomy and stratigraphy of the genus Discoaster in the circum North Atlantic Basin: Gulf of Mexico and ODP Leg 154.- Journal of Nannoplankton Research. 37(2-3): 189-214.

Bukry, D., (1973): Coccolith stratigraphy, eastern equatorial Pacific, Leg 16, Deep Sea Drilling Project. - Initial Reports of the Deep Sea Drilling Project. 16: 653-711.

Taxonomy

Minylitha

Biostratigraphy

Stratigraphic Range

Tortonian

Age (Ma)

9.75 - 7.73

Holotype

Minylitha convallis Bukry, 1973

Late Miocene

DSDP Leg 3, Site 15, Mid-Atlantic Ridge, Atlantic Ocean