Caulostrepsis Clarke, 1908
Wisshak et al., 2019a
Macroboring; substrate calcareous; tracemaker invertebrate
Buatois et al., 2017
Category of architectural design: 2.61. U-shaped borings.
Knaust, 2012a
Unbranched, U-shaped
Pokorný & Štofik, 2017
Diagnosis: Borings with one entrance or embedment structure, pouch-shaped, created by a U-shaped gallery. More complex structures can result from multiple lobes of similar structure. The individual limbs of the gallery can be clearly visible along their total length, they can be connected by the vane, or they can be fused in an oval or flattened pouch shape without the vane. The distal end has at least double the width of the apertural end. The cross-section is variably flat-oval, elliptical, constricted, or dumbbell-shaped. Symmetrical, radially organized grooves or deep pits can be developed near the aperture n some cases (normally 2 to 4 in number). The aperture may have similar form to the proximal cross-section or it may be modified by the development of superficial branches, grooves, and/or holes (Bromley and d’Alessandro, 1983).
organismirühm | Biota |
ihnorühm | Ichnofossils |
Bioerosional trace fossils | |
sugukond | Osteichnidae |
perekond | Asthenopodichnium |
Canaliparva | |
Caulostrepsis | |
liik | avipes |
biforans | |
contorta | |
cretacea | |
spiralis | |
taeniola | |
määratlemata | dunbari |
perekond | Maeandropolydora |
Osteichnus | |
Pseudopolydorites | |
Sertaterebrites |