Basic info Taxonomic history Classification Relationships
Morphology Ecology and taphonomy External Literature Search Age range and collections

Holocystites (Megacystites) abnormis

Diploporita - Holocystitidae

Holocystites abnormis was named by Hall (1864).

It was recombined as Holocystites (Megacystites) abnormalis by Frest et al. (1999); it was recombined as Holocystites (Megacystites) abnormis by Frest et al. (2011).

Sister species lacking formal opinion data

View classification of included taxa

Synonymy list
YearName and author
1864Holocystites abnormis Hall p. 8
1999Holocystites (Megacystites) abnormalis Frest et al. pp. Table 45.42
2011Holocystites (Megacystites) abnormis Frest et al. p. 77

Is something missing? Join the Paleobiology Database and enter the data

classDiploporitaMüller 1854
superfamilySphaeronitidaNeumayr 1889
familyHolocystitidaeMiller 1889
genusHolocystitesHall 1864
speciesabnormis(Hall 1864)

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.

T. J. Frest et al. 2011Holocystites (Megacystites n. sgen.) with cylindrical theca; smooth, flat plates of two generations, with secondaries developed only aborally and without impressed sutures; adoral pole rounded; aboral pole prolonged into distinct aboral projection with small (⅓-½ thecal diameter) attachment area.
No measurements are available
Composition: high Mg calcitep
Ontogeny: accretion, addition of partsp
Environment: marinep
Locomotion: stationaryc
Attached: yesc
Life habit: intermediate-level epifaunalc
Diet: suspension feederc
Vision: blindc
Dispersal: waterp
Dispersal 2: planktonicp
Created: 2004-02-28 17:28:44
Modified: 2010-02-10 13:39:16
Source: c = class, p = phylum
References: Aberhan et al. 2004, Aberhan 1992

Age range: base of the Wenlock to the top of the Sheinwoodian or 433.40000 to 430.50000 Ma

Collections (5 total)

Time interval Ma Country or state Original ID and collection number
Telychian - Sheinwoodian438.5 - 430.5USA (Indiana) Holocystites abnormalis (26803)
Telychian - Wenlock438.5 - 427.4USA (Indiana) Holocystites abnormis (26805 26806)
Wenlock - Silurian433.4 - 419.2USA (Wisconsin) Holocystites abnormis (13069 13075)