Order

Pseudorthocerida Flower et Caster, 1935

Aiheeseen liittyvät julkaisut

Manda, Š., Turek, V. 2015. Colour patterns on Silurian orthocerid and pseudorthocerid Conchs from Gotland - palaeoecological implications. Estonian Journal of Earth Sciences 64, 1, 74-79. DOI:10.3176/earth.2015.13

Stumbur, H. A. 1956. On the nautiloids of Kohila Subseries (Upper Ordovician of East Baltic). Tartu Riikliku Ülikooli Toimetised 42, 176-185.

Stumbur, H. 1955. Eesti NSV ülem-ordoviitsiumi nautiloiididest [Diplomitöö]. pp. 1-159.

List of species

1. Lyecoceras gotlandense Mutvei, 1957

2. Lyecoceras? columnare (Marklin, 1857)

3. Spyroceras perlaeve (Strand, 1934) | Upper Ordovician

Luokittelu

Organism group	Biota
Kingdom	Animalia
Phylum	Mollusca
Class	Cephalopoda
Subclass	Orthoceratia
Order	Astroviida
	Bajkalocerida
	Dissidoceratida
	Endoceratida
	Orthocerida
	Pseudorthocerida
Family	Spyroceratidae
Genus	Lyecoceras
Order	Rioceratida