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Myelodactylus

Crinoidea - Myelodactylida - Myelodactylidae

Taxonomy
Myelodactylus was named by Hall (1852) [Sepkoski's age data: S Ldov-u D Give-l Sepkoski's reference number: 1066]. It is not extant. It is the type genus of Myelodactylacea.

It was assigned to Myelodactylidae by Moore and Jeffords (1968), Ubaghs et al. (1978); and to Disparida by Sepkoski (2002).

Synonymy list
YearName and author
1852Myelodactylus Hall
1968Myelodactylus Moore and Jeffords p. 32
1978Myelodactylus Ubaghs et al. p. T551
2002Myelodactylus Sepkoski

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
—Ambulacraria
phylumEchinodermata
subphylumBlastozoa
RankNameAuthor
classCrinoideaMiller 1821
subclassPentacrinoideaJaekel 1918
infraclassInadunata(Wachsmuth and Springer 1897)
—Disparida(Moore and Laudon 1943)
orderMyelodactylida
familyMyelodactylidaeMiller 1883
genusMyelodactylusHall 1852

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.

G. †Myelodactylus Hall 1852
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†Myelodactylus ammonis Bather 1893
†Myelodactylus rotundatus Foerste 1919
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: high Mg calcitec
Ontogeny: accretion, addition of partsp
Environment: marinep
Locomotion: stationaryg
Attached: yesg
Life habit: intermediate-level epifaunalg
Diet: suspension feederg
Vision: blindc
Dispersal: waterp
Dispersal 2: planktonicp
Comments: LIFE HISTORY: Stem lengths of 2-4 cm according to Brett (1984), therefore intermediate level epifaunal.g
Created: 2009-10-09 11:46:47
Modified: 2009-10-09 13:46:47
Source: g = genus, c = class, p = phylum
References: Hendy et al. 2009, Aberhan 1992, Aberhan et al. 2004, Kiessling 2004

Age range: base of the Rhuddanian to the top of the Early/Lower Frasnian or 443.10000 to 379.00000 Ma

Collections (29 total)


Time interval Ma Country or state Original ID and collection number
Rhuddanian443.1 - 440.5USA (Illinois) M. sp. (26692)
Llandovery443.1 - 432.9USA (New York) M. linae (26773)
Silurian443.1 - 419.62USA (Oklahoma) M. sp. (528)
Aeronian440.5 - 438.6USA (Ohio) Eomyelodactylus rotundatus (76119) M. sp. (22964)
Telychian438.6 - 432.9United Kingdom M. parvispinifer (224104)
Telychian - Sheinwoodian438.6 - 430.6USA (Iowa) M. sp. (26810)
Telychian - Sheinwoodian438.6 - 430.6USA (Indiana) M. sp. (26803)
Sheinwoodian432.9 - 430.6USA (Indiana) M. sp. (26805)
Wenlock432.9 - 426.7USA (Iowa) M. sp. (25019 25044 26812)
Wenlock432.9 - 426.7USA (Tennessee) M. sp. (26802)
Wenlock432.9 - 426.7USA (New York) M. convolutus (12933) M. sp. (541 13052)
Wenlock432.9 - 426.7USA (Indiana) M. convolutus, M. ammonis (26771)
Wenlock432.9 - 426.7USA (Wisconsin) M. sp. (13353)
Wenlock - Ludlow432.9 - 422.7USA (Illinois) M. sp. (26816)
Gorstian426.7 - 425.0Czechia M. sp. (14104)
Ludlow426.7 - 422.7USA (Missouri) M. n. sp. (26822)
Ludlow426.7 - 422.7USA (Oklahoma) M. sp. (26823)
Ludfordian - Pridoli425.0 - 419.62USA (Oklahoma) M. sp. (26824)
Pridoli422.7 - 419.62USA (West Virginia) M. keyserensis (26825)
Pridoli - Lochkovian422.7 - 413.02USA (Oklahoma) M. sp. (26826)
Lochkovian419.62 - 413.02Czechia M. spatulatus (94439)
Lochkovian - Pragian419.62 - 410.62France (Alsace) M. sp. (38802)
Pragian413.02 - 410.62France (Bretagne) M. sp. (81603)
Early/Lower Frasnian382.31 - 379.0Russian Federation (Orenburgskaya Oblast) M. bifurcatus (83918)