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1 June 2004 Early Triassic Neospathodus (Conodonta) apparatuses from the Taho Formation, southwest Japan
Toshio Koike
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Abstract

Two conodont apparatuses, Neospathodus symmetricus Orchard, 1995 and N. chionensis (Bender, 1967) are reconstructed on the basis of the material from the Spathian (Lower Triassic) limestone in the Taho Formation of Ehime Prefecture, southwest Japan. The Neospathodus apparatuses are composed of eight types of elements: digyrate (cypridodelliform) M, alate S0, digyrate (enantiognathiform) S1, digyrate (grodelliform) S2, bipennate S3/4, angulate P2, and segminate P1 elements. This apparatus structure is the same as that for Neogondolella and is comparable to the standard 15-element plan of the Carboniferous ozarkodinids.

Toshio Koike "Early Triassic Neospathodus (Conodonta) apparatuses from the Taho Formation, southwest Japan," Paleontological Research 8(2), 129-140, (1 June 2004). https://doi.org/10.2517/prpsj.8.129
Received: 23 October 2002; Accepted: 1 March 2004; Published: 1 June 2004
KEYWORDS
Gondolellidae
multielements
Neospathodus
Taho Formation
Triassic
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