Species
Ancyrochitina mullinsi Nestor, 2005
Taxon description
Nestor, V., 2005
Diagnosis. Vesicle cylindro-conical with slightly developed flexure and shoulder. The base is flat or convex and broadly rounded basal edge carries 5ñ8 appendices, branching 4ñ5 times. The neck comprises about half the total length. The oral part of the neck bears very short simple or twice branching and vertically orientated spines. The middle part of the neck is sometimes provided with gently branching solitary spine(s). The aperture is smooth or finely fringed. Vesicle wall is smooth or finely granulated.
Type specimen data
Synonymy list
2005 Ancyrochitina mullinsi sp. nov. — Nestor, V. , pp. 107 , fig. Pl II, fig. 13, 14
Selection of related publications
Männik, P., Loydell, D. K., Nestor, V., Nõlvak, J. 2015. Integrated Upper Ordovician–lower Silurian biostratigraphy of the Grötlingbo-1 core section, Sweden. GFF 137, 3, 226-244. DOI:10.1080/11035897.2015.1042032
Loydell, D. K., Nestor, V., Männik, P. 2010. Integrated biostratigraphy of the lower Silurian of the Kolka-54 core, Latvia. Geological Magazine 147, 2, 253-280. DOI:10.1017/S0016756809990574
Nestor, V. 2005. Chitinozoans of the Margachitina margaritana Biozone and the Llandovery-Wenlock boundary in West Estonian drill cores. Proceedings of the Estonian Academy of Sciences. Geology 54, 2, 87-111. DOI:10.3176/geol.2005.2.02
Occurrence in samples (CONOP)
Are 171 borehole : 5 sample(s)
Kõrkküla 863 borehole : 6 sample(s)
Kaugatuma 509 borehole : 9 sample(s)
Kolka 54 borehole : 3 sample(s)
Ohesaare borehole : 1 sample(s)
Nässuma 825 borehole : 4 sample(s)
Uulu 345 borehole : 1 sample(s)
Ruhnu 500 borehole : 5 sample(s)
Varbla 502 borehole : 3 sample(s)
Tinuri 818 borehole : 1 sample(s)
Viki borehole : 6 sample(s)
Pärnu (Livonia) borehole : 4 sample(s)
Nurme puurauk : 1 sample(s)
Grötlingbo 1 borehole, Gotland : 6 sample(s)
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Classification
References based on distribution
- Nestor, V., 2005 Kaugatuma 509 borehole 252 - 242.1 Adavere Stage
Occurrence in samples