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Svobodaina

Rhynchonellata - Orthida - Heterorthidae

Taxonomy
Svobodaina was named by Havlicek (1951) [Sepkoski's age data: O Llde O Cara-u Sepkoski's reference number: 1,25,36].

It was assigned to Orthida by Sepkoski (2002); and to Heterorthidae by Williams et al. (2000) and Colmenar et al. (2014).

Synonyms
Synonymy list
YearName and author
1951Svobodaina Havlicek
2000Svobodaina Williams et al. p. 804
2002Planoharknessella Sepkoski, Jr.
2002Svobodaina Sepkoski, Jr.
2014Svobodaina Colmenar et al. p. 204

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Eutriploblastica
Neotriploblastica
Eucoelomata
superphylumLophotrochozoa
Lophophorata
phylumBrachiopodaCuvier 1805
RankNameAuthor
subphylumRhynchonelliformeaWilliams et al. 1996
classRhynchonellataWilliams et al. 1996
orderOrthidaSchuchert and Cooper 1932
suborderDalmanellidinaMoore 1952
superfamilyDalmanelloideaSchuchert 1913
familyHeterorthidaeSchuchert and Cooper 1931
genusSvobodainaHavlicek 1951

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
J. Colmenar et al. 2014Gently to strongly dorsibiconvex shell, transversely elliptical to circular in outline and with a short hinge line. Ornamentation finely costellate with ribs curved posterolaterally to intersect the hinge line. Ventral muscle field large, with flabellate diductor scars with short and rectangular adductor scars normally not enclosed anteriorly by diductors. Dorsal adductor scars quadripartite, with their posterior pair smaller than the anterior pair. Cardinal process strong with ovoid base and with trilobed myophore.