liik
Gyrolithes gyratus (Hofmann, 1979)
Taksoni kirjeldused
Laing et al., 2018
Diagnosis: Unlined, smooth, narrow-form, tightly coiled Gyrolithes. High burrow radius to whorl radius ratio i.e. narrow-form (=0.5-1; avg. 0.8), low height between whorls to burrow width ratio i.e. tightly coiled (=1.3-2.5; avg. 1.6), and low height between whorls to whorl circumference ratio i.e. shallow whorl incline (=0.3-0.4; avg. 0.4).
Sünonüümika
1979 Skolithos gyratus isp. nov. — Hofmann , joon. 15A-E
2017 Skolithos annulatus — Herringshaw et al. , lk. 375, joon. 3A
2018 Gyrolithes gyratus (Hofmann, 1979) — Laing et al. , lk. 178, joon. Figs. 3D, F; 4A;
Klassifikatsioon
organismirühm | Biota |
ihnorühm | Ichnofossils |
Bioturbation trace fossils | |
perekond | Gyrolithes |
liik | davreuxi |
gyratus | |
lorcaensis | |
polonicus | |
scintillus | |
variabilis |