Genus:
Scalenodon CROMPTON, 1955
Etymology: Greek, skalenos, “unlike, unequal” and Greek, odon,
“tooth’: Unequal tooth.
Species: angustifrons
(PARRINGTON, 1946) CROMPTON, 1955
Etymology:
= Trirachodon
angustifrons PARRINGTON, 1946
Holotype: CAMZM
T907 (field number MCZ 120B
Locality: Stockley's bone Locality B29, between Gingama and Tschikonge,
Horizon: Lifua Member of the Manda Beds (Upper bone-bearing series).
Biostratigraphy:
Age: Late Anisian Stage/Early Ladinian Stage, Mid Triassic Epoch, Middle Triassic.
Material: Skull.
Referred material:
CROMPTON, 1955
CAMZM T908 (field number MCZ 120A), CAMZM T909 (field number
MCZ 111B): Fragmentary mandibles.
CAMZM T910 (field number MCZ 110A): Mandible.
CAMZM T911 (field number MCZ 134B), CAMZM T912 (field number 112B): Fragment of left maxillae.
CAMZM T913 (field number MCZ 111C): Fragment of right maxilla.
CAMZM T914 (field number MCZ 131): Right maxilla.
CAMZM T915 (field number MCZ 129A): Fragmentary mandible.
CAMZM T916 (field number MCZ 113D): Badly crushed snout.
CAMZM T917 (field number MCZ 112C): Fragmentary maxilla.
CAMZM T918 (field number MCZ 119B):
CAMZM T925:
CAMZM T946:
ANGIELCZYK, HANCOX & NABAVIZADEH, 2017
Locality: 4.6 km northeast of the village school in Litumba Nydosi, and about 1.4 km from the closest approach of the Ruhuhu River, Ketewaka-Mchuchuma sub-basin, Ruhuhu Basin, Southern Province, Tanzania, East Africa.
Note: Exact locality data available to qualified researchers from the National Museum of Tanzania.
Horizon: Manda Formation.
Biostratigraphy:
Age: Anisian Stage, Lower Mid Triassic Epoch, Late Triassic.
Material:
NMT RB31: Skull.
NMT RB32, RB33, RB34, RB35: Edentulous cynodont jaws.
BRINK, 1986/KEYSER, 1973
Locality: Etjo mountain, Kalkfeld, Nambia.
Horizon: Omingonde Formation.
Biostratigraphy:
Age: Middle Triassic.
Material:
GSO R327: Small skull, complete with lower jaw occlued and
some postcranial elements.
GSO R569: Medium-sized skull with lower jaw partially
occluded and some postcranial elements.
GSO R570: Medium sized snout, not teeth, badly preserved.
GSO R571: Medium sized right posterior portion of skull.
GSO R572: Large skull, distorted, with dislocated lower
jaw, all upper teeth missing and some postcranial elements.
KULIK, 2023 (published 2024)
Locality: Locality Z80, Southern Tanzania.
Horizon: Manda Beds, Lifua Member.
Biostratigraphy:
Age: ?Upper Anisian Stage, Lower Mid Triassic Epoch, Late Triassic.
Material:
NMT RB581: A mostly articulated articulated skeleton including skull with lower jaws, at least 26 articulated vertebrae, articulated partial scapula, coracod, complete humerus, and porximal ulna, proximal partial huemrus, complete left femur, distal right femur, parts of both tibiate and fibulae, serval ribs and unprepared pieces.
Locality: Locality Z29, Southern Tanzania.
Horizon: Manda Beds, Lifua Member.
Biostratigraphy:
Age: ?Upper Anisian Stage, Lower Mid Triassic Epoch, Late Triassic.
Material:
NMT RB864: Isolated distal femur.
Locality: Locality Z198, Southern Tanzania.
Horizon: Manda Beds, Lifua Member.
Biostratigraphy:
Age: ?Upper Anisian Stage, Lower Mid Triassic Epoch, Late Triassic.
Material:
NMT RB1530: Isolated left femur.
_____________________________________________________________________________________
Species: ribeiroae MELO, MARTINELLI & SOARES, 2017
Etymology:
Holotype: UFRGS-PV-0239-T
Locality: Rinacao do Binhal site, Agudo Municipality, Rio Grande do Sul State, Brazil.
Horizon:
Biostratigraphy:
Age: Late Ladinian Stage, Mid Triassic Epoch, Middle Triassic.
Material: Fragmentary skull.