arrayname: original 

Lithostromationaceae

Daughter taxa (time control age-window is: 0-800Ma)					Granddaughter taxa
				Lithostromation Triangular to stellate nannoliths with porous structure formed from small crystallites. All show 3-fold symetry but with a wide range of forms.	Lithostromation hohnensis Lithostromation pyramidale Trochoaster tripartitus Lithostromation martinii Lithostromation nodosum Lithostromation obscurum Lithostromation reginum Lithostromation operosum Lithostromation perdurum Lithostromation simplex Lithostromation biconvexitas Lithostromation sp.
				Planolithus	Planolithus eggeri Planolithus mihajlovicii
				Imperiaster Very large (15-30 µm) nannolith formed of 6 rays in two superposed offset triplets
				Martiniaster Disk-shaped with 10-12 radiate ridges	Martiniaster cecellanoriae Martiniaster fragilis Martiniaster menneri
				Isolithus Simple triradiate nannolith	Isolithus kovacii Isolithus pavelicii Isolithus semenenkoi

Taxonomy:

Distinguishing features:
Parent taxon (Nannolith families inc sed): Haptophytes forming calcareous structures not obviously homologous with heterococcoliths, holococcoliths, or discoasteralids
This taxon: Large (10-20µm) triangular to stellate nannoliths with porous structure formed from small crystallites. In xpl behave as single crystal unit with low birefringence

Original description: Parmi les nannofossiles calcaires incertae sedis que j'ai décrits, il me faut rappeler ici, parce qu'ayant peut-etre des affinités avec les astérolithes, le genre Lithostromation Defl. 1942. Ce type me parait aujourd'hui si particulier que je propose de le classer dans une famille spéciale Lithostromationidae fam. nov. Comme chez les Marthasterites, des deux faces sont semblables. Dans cette famille des Lithostromationidés, je placerai également le genre Polycladolithus Defl. 1954, dont j'ai retrouvé quelques représentants dans des localités autres que celles(Eocène sup. de Nouvelle-Zélande, Eocène moyen, Lutétien, des Landes) iudiquées initialement.

Farinacci & Howe catalog pages: Lithostromationaceae

Morphology:

Ecology & Biogeography

Geological Range:
Last occurrence (top): at top of NN19 zone (100% up, 0.4Ma, in Ionian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within Early Eocene Sub-Epoch (47.84-55.96Ma, base in Ypresian stage). Data source: Total of ranges of species in this database

Plot of occurrence data:

• Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
• Triangles indicate an event for which a precise placement has been suggested
• Neptune data: this is a higher taxon page so Neptune data is not plotted. For the customisable plot option go to a genus page Parent: Nannolith families inc sed

Lithostromationaceae compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 25-4-2025 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=828 Go to Archive.is to create a permanent copy of this page - citation notes

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