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Pachylasma

Thecostraca - Balanomorpha - Pachylasmatidae

Taxonomy
Pachylasma was named by Darwin (1854) [Sepkoski's age data: T Dani R Sepkoski's reference number: 346]. It is extant. It is the type genus of Pachylasmatidae, Pachylasmatinae.

It was assigned to Cirripedia by Sepkoski (2002); to Pachylasmatidae by Jones (2007); and to Pachylasmatinae by Chan et al. (2021).

Synonymy list
YearName and author
1854Pachylasma Darwin
2002Pachylasma Sepkoski
2007Pachylasma Jones p. 293
2021Pachylasma Chan et al.

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
Deuteropoda
Mandibulata
PancrustaceaZrzavý and Štys 1997
RankNameAuthor
subphylumCrustaceaBrünnich 1772
classThecostraca(Gruvel 1905)
subclassCirripedia(Rafinesque 1816)
infraclassThoracica(Darwin 1854)
superorderThoracicalcarea()
orderBalanomorpha(Pilsbry 1916)
superfamilyChthamaloideaDarwin 1854
familyPachylasmatidaeUtinomi 1968
subfamilyPachylasmatinaeUtinomi 1968
genusPachylasmaDarwin 1854

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. Pachylasma Darwin 1854
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Locomotion: stationaryc
Attached: yesc
Epibiont: yesc
Life habit: epifaunalc
Diet: suspension feederc
Vision: limitedc
Created: 2008-03-04 07:51:33
Modified: 2011-06-14 02:28:17
Source: c = class
Reference: Kiessling 2004

Age range: base of the Waipawan to the top of the Calabrian or 55.80000 to 0.77400 Ma

Collections (7 total)


Time interval Ma Country or state Original ID and collection number
Waipawan55.8 - 53.0New Zealand (Chatham Islands) P. veteranum (52559 52561)
Bortonian - Kaiatan42.6 - 36.7New Zealand P. distortum (52129 63107)
Aquitanian23.03 - 20.44New Zealand P. southlandicum (146341)
Messinian7.246 - 5.333Spain P. sp. (56687)
Calabrian1.8 - 0.774Greece P. giganteum (190371)