Asapholithos porosuturalis
Set number: 2694
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10µm
Reworked
Discolithina? porosuturalis Bukry, 1969
Orastrum porosuturalis (Bukry, 1969) Farhan et al., 1994
The crystalline blocks exhibit whitish-grey interference colours, while the wall shows a white interference colour and has a beaded appearance.
Species of Asapholithos are characterised by four nearly equal-sized crystalline blocks separated by slightly curved, distinct axial and lateral sutures with pores, and are surrounded by a narrow wall. The lateral suture, often bearing a single row of pores, is displaced at its junction with the axial suture, which commonly features a decorated double row of pores.
Asapholithos porosuturalis is similar to Asapholithos clarusora, but it differs by lacking pores along the sutures.
Bukry, D. 1969. Upper Cretaceous coccoliths from Texas and Europe. University of Kansas Paleontological Contributions, Articles 51 (Protista 2): 1-79.
Farhan, A. J., Burnett, J. A., Bown, P. R. & Lord, A. R. 1994. Holococcoliths from the Upper Cretaceous of Alabama and Mississippi (USA). Cahiers de Micropaléontologie. 9: 57-73.
Holotype
Discolithina? porosuturalis
Bukry, 1969
Early Campanian
Lake Vaxahacie, Ellis County, Texas, USA