Genus: Microconodon OSBORN, 1886
Etymology: Greek, mikros, “small”, Greek, konos, “cone” and Greek, odon, “tooth”: Little cone tooth.
= Tytthoconus PALMER, 1903
Etymology: Greek, tytthos, “small” and Greek, konos, “cone”: Small cone.

Species: tenuirostris OSBORN, 1886
Etymology:
= Tytthoconus tenuirostris (OSBORN, 1886) PALMER, 1903

Holotype: ANSP 10248

Locality: Sanford Basin, Chatham County, North Carolina.

Horizon: Cumnock Formation, Newark Supergroup.

Biostratigraphy:

Age: Late Carnian Stage, Early Late Triassic Epoch, Late Triassic.

Material: Teeth.

Referred material:

SUES, 2001

Locality: USNM Locality 39981, 0.16 km (0.1 miles) east of the eastern branch of the Little Tomahawk Creek, along the former course of VA 652 (old Hundred Road), near Midlothia, 77°40’17”N, 37°27’50”W, Hallsboro 7.5 Minute Quadrangle, Chesterfield County, Virginia.

Horizon: Tomahawk Creek Member, Vinita (Turkey Branch) Formation, Newark Supergroup.

Biostratigraphy:

Age: Early to Middle Carnian Stage, Early Late Triassic Epoch, Late Triassic.

Material:

USNM 437637: Incomplete left dentary lacking much of the articular and coronoid processes, with alveoli for 3 incisors and the canine, 7 mostly broken postcanine teeth, and attached left symphseal end of right dentary.

ROM 44300: Incomplete left dentary with alveoli for one incisor and the canine, 3 postcanine teeth, and the basal portions of 4 postcanines, mandibular symphysis for the most part preserved only as an impression and posterior portion of dentary broken and displaced anterolaterally.

ROM 44301: Anterior portion of right dentary with alveolus for canine, 5 preserved postcanine teeth, and alveoli for 3 postcanines.

USNM 448579: Isolated complete postcanine tooth.

USNM 448600, ROM 44301: Isolated postcanine teeth with most of the root broken off.