| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Pseudoristola megaglobosa
Original description: Test conical, without horn, with five to six post-abdominal chambers. Cephalis conical, remaining chambers trapezoidal in outline and gradually increasing in width as added. Earlier chambers closely spaced, sparsely perforate, covered with layer of microgranular silica. Post-abdominal chamber consisting of two to three rows of polygonal pore frames in each chamber. Final post abdominal chamber terminating in largesubspherical expansion. Pore frames subregular, slightly variable in size, with largest pore frames on bulbous expansion. Test without prominent circumferential ridges, with H-linked pattern along joints.
Etymology: Megaglobosa: mega (large) globosus-a-um (spherical).
| Year | Name and author |
|---|---|
| 1987 | Pseudoristola megaglobosa Yeh p. 96 figs. Pl. 14, fig. 13, Pl. 23, figs. 17, 22 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
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| Source: p = phylum | |||||
| Reference: Kiessling 1999 | |||||
Age range: base of the Late/Upper Pliensbachian to the top of the Early/Lower Toarcian or 192.90000 to 182.90000 Ma
Collections (24 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Pliensbachian | Canada (British Columbia) | Pseudoristola megaglobosa (119714 119716 119748 119765 119766 119767 119770 119773 119774 119775 119788 119789 119790 119792 119800 119808 119811) | |
| Late/Upper Pliensbachian | Canada (British Columbia) | Pseudoristola megaglobosa (71080 71100 119776) | |
| Early/Lower Toarcian | USA (Oregon) | Pseudoristola megaglobosa (type locality: 124328 124333 124334) | |
| Early/Lower Toarcian | Japan | Pseudoristola megaglobosa (124830) |