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Ancillotoechia
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Rhynchonellida
Superfamily:
Rhynchotrematoidea
Family:
Trigonirhynchiidae
Formal Genus Name and Reference:
Ancillotoechia HAVLÍČEK, 1959, p. 78
Type Species:
Rhynchonella ancillans BARRANDE, 1879b, pl. 36, OD
Images
(Click to enlarge in a new window)
Fig. 711, 1a-b. *A. ancillans (Barrande), upper Silurian, Kopanina Limestone, Bohemia, $a-d$, lectotype, dorsal, ventral, anterior, and lateral views, Kopanina Limestone, basal Budnany, V Kozle, near Beroun, x3.5$ (new), $e-h$, serial sections $7.55, 7.50, 7.45, 7.40 \\mathrm{~mm}$ from anterior, x10$ (Havlíček, 1961).
Synonyms
Trigonirhynchioides
Geographic Distribution
cosmopolitan
Age Range
Beginning Stage in Treatise Usage:
middle Silurian (Wenlock)
Beginning International Stage:
Sheinwoodian
Fraction Up In Beginning Stage:
0
Beginning Date:
432.93
Ending Stage in Treatise Usage:
Lower Devonian (Lochkovian)
Ending International Stage:
Lochkovian
Fraction Up In Ending Stage:
100
Ending Date:
412.4
Description
Small with subcircular to elongate outline, dorsibiconvex profile. Beak suberect, delthyrium open or with disjunct deltidial plates. Fold and sulcus narrow, anterior commissure uniplicate, tongue high, serrate. Costae strong, simple, from beaks. Dental plates short, thin, vertical. Septalium with cover, dorsal median septum low, cardinal process absent.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Rhynchonellida
Superfamily:
Rhynchotrematoidea
Family:
Trigonirhynchiidae
Formal Genus Name and Reference:
Ancillotoechia HAVLÍČEK, 1959, p. 78
Type Species:
Rhynchonella ancillans BARRANDE, 1879b, pl. 36, OD
Images
(Click to enlarge in a new window)
Fig. 711, 1a-b. *A. ancillans (Barrande), upper Silurian, Kopanina Limestone, Bohemia, $a-d$, lectotype, dorsal, ventral, anterior, and lateral views, Kopanina Limestone, basal Budnany, V Kozle, near Beroun, x3.5$ (new), $e-h$, serial sections $7.55, 7.50, 7.45, 7.40 \\mathrm{~mm}$ from anterior, x10$ (Havlíček, 1961).
Synonyms
Trigonirhynchioides
Geographic Distribution
cosmopolitan
Age Range
Beginning Stage in Treatise Usage:
middle Silurian (Wenlock)
Beginning International Stage:
Sheinwoodian
Fraction Up In Beginning Stage:
0
Beginning Date:
432.93
Ending Stage in Treatise Usage:
Lower Devonian (Lochkovian)
Ending International Stage:
Lochkovian
Fraction Up In Ending Stage:
100
Ending Date:
412.4
Description
Small with subcircular to elongate outline, dorsibiconvex profile. Beak suberect, delthyrium open or with disjunct deltidial plates. Fold and sulcus narrow, anterior commissure uniplicate, tongue high, serrate. Costae strong, simple, from beaks. Dental plates short, thin, vertical. Septalium with cover, dorsal median septum low, cardinal process absent.