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Supraspecific Names Based Upon Fossil Types
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acutely rounded adductor muscle scar anterior adductor muscle antero-dorsal margin Arcopagia Beaks bluntly truncate broadly arcuate broadly rounded cardinal is small coalescent with pallial concentric ridges Conrad Cretaceous depressed ligamental groove Deshayes dorsal margin Dorsal view elongate-ovate end is rounded end of ligamental entirely coalescent Eocene escutcheon Exterior of left Exterior of right figs figured specimen fold is obsolete genus geologic range habitat Hanley height holotype inequilateraI Interior Iredale Lamarck lamellar laterals of left left anterior cardinals left posterior cardinals left valve length Linnaeus lunule Macoma margin is broadly margin is coalescent mid-length millimeters moderately oblique Olsson Pallial sinus periostracum Pliocene posterior and left posterior end postero-dorsal margin postero-umbonal fold Quadrans radial striae right posterior right valve Römer rostrate Sculpture consists Shell of medium Shell small sinus is large species Strigilla Subgenus suborbicular Tellina Tellinidae thickness thin trigonal type-species USNM valve are obsolete valves are absent ventral margin