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Morphology Ecology and taphonomy   Age range and collections

Xysila astaca

Rhynchonellata - Atrypida - Protozygidae

Taxonomy
Xysila astaca was named by Copper (1995). It is not extant. Its type specimen is Gs85109, a shell (complete shell). Its type locality is A379, which is in a Katian carbonate mudstone in the Vaureal Formation of Canada. It is the type species of Xysila.

Synonymy list
YearName and author
1995Xysila astaca Copper p. 849 figs. 3, 4, 5.1-5.10

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Eutriploblastica
Neotriploblastica
Eucoelomata
superphylumLophotrochozoa
Lophophorata
phylumBrachiopodaCuvier 1805
RankNameAuthor
subphylumRhynchonelliformeaWilliams et al. 1996
classRhynchonellataWilliams et al. 1996
orderAtrypidaRzhonsnitskaya 1960
suborderLissatrypidinaCopper 1996
superfamilyProtozygoideaCopper 1986
familyProtozygidaeCopper 1986
genusXysila
speciesastaca

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.

Diagnosis
ReferenceDiagnosis
P. Copper 1995Small, elongate, globose, rectimarginate-bisul-cate shells; hypercline area; minute pedicle opening; medially directed spiralia with -four whorls; long jugum arising anteriorly.