- Type images:
type image: A. cribosa
From Suzuki Paleotax db:
1913 Acrobotrissa cribosa n. sp. Popofsky p. 322, text-fig. 29
1971 Acrobotrissa cribosa Popofsky Casey pl. 23.2, figs. 3-4
1971 Botryopyle cribosa (Popofsky) Petrushevskaya p. 163, 165, pl. 84, figs. 1-3
1975 Botryopyle cf. cribrosa (Popofsky) group Nakaseko & Nishimura p. 57, pl. 7, figs. 6-9
1982 Acrobotrissa cribosa Popofsky Tan & Su p. 168, pl. 15, fig. 10
1983 Acrobotrissa cribosa Popofsky Benson p. 499, pl. 9, fig. 5
1985 Acrobotryssa cribosa Popofsky Boltovskoy & Jankilevich pl. 5, fig. 14
2003 Acrobotrissa cribosa Popofsky Tan & Su p. 110-111, pl. 19, fig. 8; text-fig. 88
Catalog entries: Acrobotrissa cribosa
type image: A. cribosaOriginal description: Der verhältnismäßig große Kopf besteht aus zwei "echten" Kammern, von denen die größere, erdbeerförmige etwa dreimal so groß ist wie die kleinere, ihr dicht anliegende zweite Kammer. An diese schließt sich noch eine "unechte" dritte Kammer an, als welche man den erweiterten basalen Teil des kurzen Vertikaltubus bezeichnen kann. An diese drei Kammern, die den kuppelförmig abgewölbten apikalen Teil des Thorax zur Basis haben, schließt sich ein bauchig erweiterter Thorax an, dessen Mündung zusammengezogen ist. In der Nackeneinschnürung zeigt sich der Dorsalstachel (D) klein und dornenförmig; ihm gegenüber, ebendort, steht der kurze, kraterartige Vertikalstachel (Vert.), dessen oberer Rand in einige kurze, spitze Dörnchen ausgezogen ist. Auf dem Köpfchen findet sich ein kleines, konisches Apikalhorn (in der Textfig. 29 durch die Schale verdeckt). Die ganze Schale ist von vielen ungleich großen Poren durchsetzt. Am Gipfel der beiden Kopfkammern liegen kleinere, rundliche Poren, in der Nähe der Nackenfurche größere und mehr unregelmäßig gestaltete, die im unteren Teile des Thorax immer kleiner werden und schließlich, reihenweise angeordnet, am unteren Rande als kleine Punkte erscheinen. Total length of the shell 87µm. maximum width 50µm.
Translated description: The relatively large head consists of two "real" chambers, of which the larger, strawberry-shaped one is about three times as large as the smaller, closely adjacent second chamber. This is followed by a "fake" third chamber, which can be described as the extended basal part of the short vertical tube. These three chambers, which have the dome-shaped apical part of the thorax as their base, are adjoined by a bulbously expanded thorax, the mouth of which is contracted. In the neck constriction, the dorsal spine (D) is small and thorn-shaped; Opposite it, right there, is the short, crater-like vertical spine (Vert.), the upper edge of which is extended into a few short, pointed spines. There is a small, conical apical horn on the head (hidden by the shell in Fig. 29). The entire shell is riddled with many pores of unequal size. At the top of the two head chambers there are smaller, rounded pores, near the neck furrow there are larger and more irregularly shaped ones, which become smaller and smaller in the lower part of the thorax and finally, arranged in rows, appear as small dots at the lower edge.||||Total length of the shell 87µm. maximum width 50µm. [gt]
Remarks on original description:
[unknown editor] Cited as Acrobotrissa cribosa in the text but this is a clear mispelling and it is cited as cribrosa in the figure caption.
[dbl] Why name changed from A. cribrosa as done by prior editor: Popofsky presumably was aware of Ehrenberg's similar species with the name cribrosa [note 'r'] but definitely described cribosa as a new species and in a new genus - one with only 2 chambers in the cephalis, as indeed his illustration shows. Ehrenberg's cribrosa has 3 chambers [confirmed in Tokyo monograph reexamination]. It is not clear if this justifies a new species let alone genus but the name cribosa is validly published and is not entered as cribrosa in the catalog.
Geological Range:
Last occurrence (top): Extant. Data source:
First occurrence (base): within Langhian Stage (13.82-15.97Ma, base in Langhian stage). Data source:
Plot of occurrence data:
References:
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Acrobotrys cribosa compiled by the radiolaria@mikrotax project team viewed: 19-11-2025
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