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

Hemithylus

Echinoidea - Phymosomatidae

Taxonomy
Hemithylus is a genus. It is not extant.

It was assigned to Phymosomatidae by Fell and Pawson (1966); and to Phymosomatoida by Sepkoski (2002).

Synonymy list
YearName and author
1966Hemithylus Fell and Pawson p. U399
2002Hemithylus Sepkoski

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

RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
—Ambulacraria
phylumEchinodermata
subphylumEleutherozoa
—Echinozoa()
RankNameAuthor
classEchinoidea()
subclassEuechinoideaBronn 1860
superorderAcroechinoidea()
—Carinacea
—Calycina(Gregory 1900)
suborderPhymosomatoida()
familyPhymosomatidae
genusHemithylus

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.

show all | hide all
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: high Mg calcitesubo
Ontogeny: accretion, addition of partsp
Environment: marinep
Locomotion: slow-movingsubo
Life habit: low-level epifaunalsubo
Diet: omnivoresubo
Vision: limitedc
Dispersal: waterp
Dispersal 2: planktonicp
Created: 2004-02-29 10:30:22
Modified: 2009-12-13 03:47:39
Source: subo = suborder, c = class, p = phylum
References: Aberhan 1992, Aberhan et al. 2004, Kiessling 2004

Age range: Early/Lower Maastrichtian or 70.60000 to 66.00000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Early/Lower Maastrichtian70.6 - 66.0Germany (Mecklenburg-Vorpommern) H. alternatus (32022)