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Titanambonites incertus

Strophomenata - Strophomenida - Leptellinidae

Titanambonites incertus was named by Williams (1962). Its type specimen is (BB. 15424, a valve (Internal and external mould of pedicle valve), and it is a 3D body fossil. Its type locality is 500 yards south-south-east of Glendrissaig Farm, which is in a Burrellian offshore mudstone in the Balclatchie Formation of the United Kingdom.

Synonymy list
YearName and author
1962Titanambonites incertus Williams pp. 160 - 161 figs. Pl. XIV, figs. 36-38; P1. XV, figs. 1-4, 6
2014Titanambonites incertus Candela and Harper pp. Supplement 1

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phylumBrachiopodaCuvier 1805
subphylumRhynchonelliformeaWilliams et al. 1996
classStrophomenataWilliams et al 1996
orderStrophomenidaOpik 1934
superfamilyPlectambonitoideaJones 1928
familyLeptellinidaeUlrich and Cooper 1936
subfamilyPalaeostrophomeninaeCocks and Rong 1989

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

A. Williams 1962Elongately semi-oval and deeply concavo-convex Titanambonites with the suggestions of a slight carina in the pedicle valve and a poorly defined geniculate zone anteriorly; ornamentation consisting of differentially accentuated costellae, commonly numbering 6 or 7 per millimetre antero-medianly, together with fine concentric lamellae and irregularly spaced thickened bands representing crowded lamellose outgrowths; ventral muscle-scar subcordate, just over one-half as long as wide, occupying the umbonal region and extending anteriorly for less than one-fifth the length of the pedicle valve; vascula media divergent and branching laterally and medianly from nodes at just over two-fifths the length of the valve; dorsal interior imperfectly known but with a subdued median ridge and a well-developed secondary bar just anterior to and parallel with the hinge-line, as well as divergent weak septa in the adductor muscle-field.