liik

Schaubcylindrichnus heberti (Saporta, 1872)

Taksoni kirjeldused

Howard & Frey, 1984

Diagnosis Smooth walled, unomamented, thicklylined cylindrical burrows of somewhat variable orientation.

Pemberton & Frey, 1982

Straight to slightly curved, branched or unbranched, smooth-walled, cylindrical burrows; wall linings a significant part of the total diameter, the actual thicness varying with the size of the burrow. Exept among the collapsed specimens, the diameter of P. herberti segments tends to remain more or less constant, collapse are common, however, as are crossovers. Wall linings typically consist of agglutinated sediment, coarser and better sorted than that of adjacent rock; mica flakes, where present, are oriented concentrically with burrow walls. Preserved primarily as hypichnial ridges, less commonly as endichnia or epichnial grooves.

Sünonüümika
1872     Siphonotes herberti — Saporta , lk. 110, joon. 22:1-2
1883     Palaeophycus herberti — Saporta & Marion , lk. 97-98, joon. text fig. 23
1962     Palaeophycus herberti — Häntzschel , lk. W215
1975     Palaeophycus herberti — Häntzschel , lk. W106
1975     Palaeophycus herberti — Alpert , lk. 518
1982     Palaeophycus herberti (Saporta, 1872) — Frey & Howard , lk. 382, joon. 5.5; 5.9; 12; 16.10
1982     Palaeophycus herberti (Saporta, 1872) — Pemberton & Frey , lk. 861, joon. 1:4,9; 4:4
1984     Palaeophycus herberti (de Saporta, 1872) — Howard & Frey , lk. 206, joon. 12
1985     Palaeophycus cf. herberti — Frey & Bromley , joon. 13C
1998     Palaeophycus herberti (de Saporta, 1872) — Stanley & Pickerill , lk. 21, joon. 8:2
Valik taksonit käsitlevast teaduskirjandusest
Toom, U., Vinn, O., Hints, O. 2019. Ordovician and Silurian ichnofossils from carbonate facies in Estonia: A collection-based review. Palaeoworld 28, 1-2, 123-144. DOI:10.1016/j.palwor.2018.07.001
Loading...
Klassifikatsioon