liik

Laufeldochitina toilaensis Nõlvak, Liang et Hints, 2019

Taksoni kirjeldused

Nõlvak et al., 2019

Diagnosis. Elongated species of Laufeldochitina with a claviform chamber, whole vesicle covered with longitudinal discontinuous striae (longitudinal ridges), sharp basal margin carries a very short thickened carina, flexure and shoulder inconspicuous.

Description. Its main characteristic is the presence of closely spaced linear striae (with height of 2–4 μm), which follow the outlines of the overall shape of the vesicle. The cylindrical neck comprises about 1/2 of the total length. The base is flat or rarely covered with concentric thickenings. The short carina at the margin of the flattened vesicles is often broken. The aperture is straight.

Sünonüümika
2002     Laufeldochitina stentor (Eisenack) — Sennikov et Obut, 2002 , joon. Pl. 1:10
2019     Laufeldochitina toilaensis n. sp. — Nõlvak et al.
Valik taksonit käsitlevast teaduskirjandusest
Nõlvak, J., Liang, Y., Hints, O. 2019. Early diversification of Ordovician chitinozoans on Baltica: New data from the Jägala waterfall section, northern Estonia. Palaeogeography, Palaeoclimatology, Palaeoecology 525, 14-24. DOI:10.1016/j.palaeo.2019.04.002
Sennikov, N. V., Obut, O. T. 2002. Testing the chitinozoan zonal succession according to the graptolite zonal scale (Ordovician, Gorny Altai and Moscow syneclise). Geologia i geofizika 5, 51-63.
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Klassifikatsioon
organismirühmBiota
riikAnimalia
klassChitinozoa
seltsProsomatifera
sugukondConochitinidae
alamsugukondTanuchitininae
perekondLaufeldochitina
liikstentor
striata
toilaensis
Levik kirjandusandmetel