Petalosis clarus, Ernst & Fernández & Fernández-Martínez & Vera, 2012

Ernst, Andrej, Fernández, Luis Pedro, Fernández-Martínez, Esperanza & Vera, Carmen, 2012, Description of a bryozoan fauna from mud mounds of the Lebanza Formation (Lower Devonian) in the Arauz area (Pisuerga-Carrión Province, Cantabrian Zone, NW Spain), Geodiversitas 34 (4), pp. 693-738 : 708

publication ID

https://doi.org/ 10.5252/g2012n4a1

persistent identifier

https://treatment.plazi.org/id/03A6D074-FFE0-7E1C-FF33-FE52FB00FE8C

treatment provided by

Marcus

scientific name

Petalosis clarus
status

n. gen., n. sp.

Petalosis clarus n. gen., n. sp. ( Figs 9 View FIG C-H, 10A-C; Appendix)

ETYMOLOGY. — The species name refers to the distinct morphology of the species (derived from Latin “ clarus ” = clear, distinct).

HOLOTYPE. — SMF 21.194 About SMF .

PARATYPES. — SMF 21.194- SMF 21.206.

TYPE LOCALITY. — Arauz Sur (Arroyo section), Province of Palencia, NW-Spain (Cantabrian Mountains).

TYPE HORIZON. — Lebanza Formation, Lower Devonian (Pragian).

DIAGNOSIS. — As for genus.

DESCRIPTION

Encrusting colonies, secondary overgrowths common. Encrusting sheets 0.8 to 3.3 mm in thickness. Autozooecia growing from thick epitheca, bending sharply at their bases towards colony surface. Autozooecial apertures circular to oval. Basal diaphragms common to moderately abundant, closely spaced, thin, horizontal or inclined. Lunaria well developed, laminated, prominent, horseshoe shaped to triangular, often containing 2-3 styles. One or two pairs of spine-like indentions occurring in lateral parts of proximal ends of autozooecia. Vesicles large and high, irregularly shaped, polygonal in tangential section, box-like to hemispherical, with plane or concave roofs, 3-8 surrounding each autozooecial aperture. Bands of large and irregularly shaped vesicles present. Acanthostyles between autozooecial apertures common, 0.0.25- 0.035 mm in diameter, having distinct hyaline cores and wide laminated sheaths. Autozooecial walls granular, 0.005 -0.010 thick in endozones; thick, laminated in exozones. Maculae not observed.

Order TREPOSTOMATA Ulrich, 1882 Suborder HALLOPORINA Astrova, 1965

SMF

Forschungsinstitut und Natur-Museum Senckenberg

Kingdom

Animalia

Phylum

Bryozoa

Class

Stenolaemata

Order

Cystoporida

Family

Fistuliporidae

Genus

Petalosis

Loc

Petalosis clarus

Ernst, Andrej, Fernández, Luis Pedro, Fernández-Martínez, Esperanza & Vera, Carmen 2012
2012
Loc

TREPOSTOMATA

Ulrich 1882
1882
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