Asapholithos porosuturalis
Set number: 2694
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10µm
Reworked
Discolithina? porosuturalis Bukry, 1969
Orastrum porosuturalis (Bukry, 1969) Farhan et al., 1994
The segments 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 segments 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 and by having a wall with a beaded appearance.
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