Aulacognathus sp.

Waid, Christopher B. T. & Cramer, Bradley D., 2017, Telychian (Llandovery, Silurian) conodonts from the LaPorte City Formation of eastern Iowa, USA (East-Central Iowa Basin) and their implications for global Telychian conodont biostratigraphic correlation, Palaeontologia Electronica 42 (6), pp. 1-37 : 23

publication ID

https://doi.org/ 10.26879/685

persistent identifier

https://treatment.plazi.org/id/BD71879D-676E-FFCF-5E4A-20E3F36BFF19

treatment provided by

Felipe

scientific name

Aulacognathus sp.
status

 

Aulacognathus sp.

Figure 10.20 View FIGURE 10 -21

Description. P 1 element slightly stellate, blade slightly bowed in oral view, with an outer lateral lobe and an anteriorly-oriented inner lateral process. Denticles in center of blade slightly taller than those towards the posterior or anterior ends of the element. Inner lateral process contains small denticles. Outer lateral lobe without ornamentation. Basal cavity wide and highly excavated under basal platform.

Remarks. The geometry of the blade and inner lateral process and highly excavated basal cavity is similar to many species of Aulacognathus . However, no features diagnostic of a species within Aulacognathus are present. The specimens are very small and are interpreted as being juveniles, so either the specimens may represent a heretofore undescribed species, or diagnostic features are not developed.

Material examined. Two P 1 elements.

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