Abstract
The problematic small shelly fossil Mongolitubulus Missarzhevsky, 1977 is reported from the Henson Gletscher Formation of late Early Cambrian age (Bonnia-Olenellus Zone) in southem Freuchen Land, central North Greenland. Mongolitubulus is described from strata of similar Early Cambrian age (Botomian) in Mongolia and Kazakhstan, and is also reported from Antarctica. The Greenland Mongolitubulus is the first record of the genus from the North American continent.
Highlights
In this preliminary paper we briefly repart the occurrence af the problematic 'small shelly fossil' Mongolitubulus Missarzhevsky, 1977 from the Lower Cambrian Henson Gletscher Formation of southern Freuchen Land, central North Greenland
Missarzhevsky noted that the narrow, tubular fossils are characterised by a prominent scale-like ornamentation on the outer surface, consisting of densely-spaced, ovoid to diamond-shaped elements
Individual elements merge with the general surface of the tube at their abapical margin but are raised and slightly overhang the general surface at their adapical margin
Summary
The problematic small shelly fossil Mongolitubulus Missarzhevsky, 1977 is reported from the Henson Gletscher Formation of late Early Cambrian age (Bonnia-Olenellus Zone) in southem Freuchen Land, central North Greenland. In this preliminary paper we briefly repart the occurrence af the problematic 'small shelly fossil' Mongolitubulus Missarzhevsky, 1977 from the Lower Cambrian Henson Gletscher Formation of southern Freuchen Land, central North Greenland (figs 1, 2). Missarzhevsky & Mambetov (1981) subsequently described Mongolitubulus squamifer from the Geress sub-unit of the Shabakty Series in Maly Karatau, Kazakhstan, illustrating a specimen with more irregular ornamentation than illustrated by Missarzhevsky (1977) in the holotype from Mongolia. Missarzhevsky & Mambetov (1981) commented that the variation in ornamentation between the two small samples from Mongolia (4 specimens) and Maly Karatau (10 specimens) might reflect geographic separation. The large sample from Greenland preserves a spectrum of patterns of ornamentation encompassing both forms
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
