Spatial and temporal distribution of Auguritidae and Pinacitidae in the Devonian. A, Phylogeny and stratigraphic ranges of studied Devonian ammonoids. Stratigraphic ranges of taxa compiled from [74–77, 88, 91, 93, 202] and own unpublished data. The phylogenetic bifurcations are at an arbitrary stratigraphic position; thick vertical bars indicate temporal ranges based on fossil evidence (black = stratigraphic range after [77, 88]; grey = stratigraphic range after literature, see text). B, Palaeogeographical maps (modified from ; see http://www.scotese.com) for the Early and Middle Devonian showing auguritid (bottom) and pinacitid (top) occurrences: AA: Anti-Atlas, Morocco; CA: Cantabrian Mountains, Spain; CE: Celtiberian Mountains, Spain; NU: Northern Urals; ZG: Zeravshan-Gissar Range, Uzbekistan.