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Merriamaster

Echinoidea - Clypeasteroida - Dendrasteridae

Taxonomy
Merriamaster was named by Lambert (1911) [Sepkoski's age data: T Mi-u T Plio-u Sepkoski's reference number: 577].

It was assigned to Scutellidae by Grant and Hertlein (1938); to Dendrasteridae by Durham (1955), Durham (1966); and to Clypeasteroida by Sepkoski (2002).

Synonyms
Synonymy list
YearName and author
1911Merriamaster Lambert p. 64
1914Orchoporus Lambert and Thiery
1938Orchoporus Grant and Hertlein p. 50
1938Merriamaster Grant and Hertlein p. 64
1955Merriamaster Durham pp. 161 - 162 figs. Figs. 4, f; 35, c
1966Merriamaster Durham p. U480
2002Merriamaster Sepkoski

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
—Ambulacraria
phylumEchinodermata
subphylumEleutherozoa
—Echinozoa()
classEchinoidea()
subclassEuechinoideaBronn 1860
RankNameAuthor
superorderAcroechinoidea()
—Carinacea
—Irregularia()
—Microstomata
—Neognathostomata
orderClypeasteroida
suborderScutellina()
infraorderScutelliformes
familyDendrasteridae
genusMerriamasterLambert 1911

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. †Merriamaster Lambert 1911
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†Merriamaster perrini Weaver 1908
†Merriamaster weaveri Durham and Morgan 1978
Invalid names: Orchoporus Lambert and Thiery 1914 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: high Mg calcitec
Ontogeny: accretion, addition of partsp
Environment: marinep
Locomotion: slow-movingo
Life habit: semi-infaunalo
Diet: detritivoreo
Vision: limitedc
Dispersal: waterp
Dispersal 2: planktonicp
Created: 2004-02-28 18:19:59
Modified: 2009-10-08 15:05:22
Source: o = order, c = class, p = phylum
References: Kiessling 2004, Aberhan 1992, Aberhan et al. 2004

Age range: base of the Early/Lower Miocene to the top of the Piacenzian or 23.04000 to 2.58000 Ma

Collections (10 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Miocene23.04 - 15.98USA (California) Orchoporus lamberti (203418)
Early/Lower Pliocene5.333 - 3.6USA (California) Dendraster perrini (220183)
Pliocene5.333 - 2.58USA (California) Dendraster perrini (194664) M. weaveri (194689) Orchoporus koehleri (59922)
Blancan4.7 - 1.4USA (California) Dendraster perrini (19676 19678)
Late/Upper Pliocene3.6 - 2.58USA (California) M. sp. (238622)
Piacenzian3.6 - 2.58USA (California) M. perrini (189538 189543)