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PELOROPLITES

a polacanthid ankylosaurian dinosaur from the Late Cretaceous of North America
Pronunciation: peh-LOR-oh-PLY-teez
Meaning: Monster armored soldier
Author/s: Carpenter et al. (2008)
Synonyms: None known
First Discovery: Utah, USA
Acta Ordinal: #657

Peloroplites cedrimontanus

(Monstrous heavy one of Cedar Mountain)Etymology
Peloroplites is derived from the Greek "peloros" (monstrous, gigantic) and "hoplites" (heavily armed), and as a subjunctive, a heavily armed soldier.
The species epithet, cedrimontanus, is derived from the Latin "cedrus" (cedar) and "mont-" (mountain), referring to its discovery in the Cedar Mountain formation.
Discovery
The remains of Peloroplites were discovered at Price River II Quarry (locality number EM 372) in the base of the Mussentuchit Member of the Cedar Mountain Formation, Emery County, Utah, near the quarry that produced the holotype of Cedarpelta bilbeyhallorum.
The holotype of Peloroplites (CEUM 26331) is a partial skull.
A plethora of paratypes were also recovered from the same quarry, including five neck vertebrae (CEUM 11342, CEUM 11354, CEUM 11682, CEUM 26283, CEUM 36714), seven back vertebrae (CEUM 8080, CEUM 11355, CEUM 11654, CEUM 11702, CEUM 11720, CEUM 12829, CEUM 36701), a "synsacrum" of one back vertebra fused to the front end of a block of three hip vertebrae and two tail vertebrae fused to the back end (CEUM 11889), nineteen tail vertebrae (CEUM 19481, CEUM 22684, CEUM 31961, CEUM 31971, CEUM 32003, CEUM 32022, CEUM 36696, CEUM 11330, CEUM 36703, CEUM 36709, CEUM 39582, CEUM 50410, CEUM 11624, CEUM 11681, CEUM 11632, CEUM 12755, CEUM 12846, CEUM 14382, CEUM 36186), chevrons (CEUM 11735, CEUM 19507, CEUM 11670, CEUM 14381), a shoulder girdle (CEUM 11706, CEUM 11719), four right upper arm bones (CEUM 10614, CEUM 11334, CEUM 11639, CEUM 12831), eight forearm bones (radii = CEUM 11631, CEUM 11655, CEUM 11712, CEUM 11718 / ulnae = CEUM 11708, CEUM 11347, CEUM 11888, CEUM 11669), five pelvic bones (ilia = CEUM 26342, CEUM 50418, CEUM 50427 / pubis = CEUM 11626 / ischium = CEUM 11313), four thigh bones (CEUM 22682, CEUM 11319, CEUM 11321, CEUM 11676), three shin bones (CEUM 12837, CEUM 11640, CEUM 11710), two calf bones (CEUM 12836, CEUM 12158), five hand bones (CEUM 12187, CEUM 12188, CEUM 12189, CEUM 12191, CEUM 12193), one foot bone (CEUM 11605), sixteen bones that could be from the hand or foot... or both (metapodials = CEUM 10638, CEUM 11606, CEUM 11617, CEUM 11639, CEUM 11641, CEUM 11649, CEUM 11665, CEUM 11666, CEUM 11672, CEUM 11673, CEUM 11700, CEUM 14390, CEUM 26286 CEUM 19527, CEUM 31239, CEUM 35866), fifteen finger or toe bones (phalanges = CEUM 11357, CEUM 11618, CEUM 11623, CEUM 11882, CEUM 11646, CEUM 11656, CEUM 12190, CEUM 12192, CEUM 12219, CEUM 12220, CEUM 12222, CEUM 12834, CEUM 20562, CEUM 32011, CEUM 50383), twelve finger or toe tips (unguals = CEUM 11645, CEUM 11647, CEUM 12164, CEUM 11671, CEUM 12218, CEUM 12221, CEUM 12223, CEUM 12797, CEUM 13286, CEUM 26324, CEUM 19553, CEUM 32002), and twenty pieces of armour (CEUM 1344, CEUM 11971, CEUM 11346, CEUM 11350, CEUM 11973, CEUM 11356, CEUM 11607, CEUM 11650, CEUM 11697, CEUM 12825, CEUM 36404, CEUM 14050, CEUM 12388, CEUM 12867, CEUM 26291, CEUM 20561, CEUM 26333, CEUM 34578, CEUM 38748, CEUM 14331).
Estimations
Timeline:
Era: Mesozoic
Epoch: Late Cretaceous
Stage: Cenomanian-Turonian
Age range: 98-93 mya
Stats:
Est. max. length: 6 meters
Est. max. hip height: ?
Est. max. weight: 2 tons
Diet: Herbivore
References
• Carpenter K, Kirkland JI, Birge D and Bird J (2001) "Disarticulated skull of a new primitive ankylosaurid from the Lower Cretaceous of Utah". In "The Armored Dinosaurs". [Cedarpelta bilbeyhallorum.]
• Carpenter K, Bartlett J, Bird J and Barrick R (2008) "Ankylosaurs from the Price River Quarries, Cedar Mountain Formation (Lower Cretaceous), east-central Utah". Journal of Vertebrate Paleontology, 28(4): 1089-1101. DOI: 10.1671/0272-4634-28.4.1089.
• Vickaryous MK, Maryanska T and Weishampel DB (2004) Chapter 17: "Ankylosauria". In Weishampel, Dodson and Osmólska (eds.) "The Dinosauria: Second Edition".
• Paul GS (2016) "The Princeton Field Guide to Dinosaurs: Second Edition".
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To cite this page:
Atkinson, L. "PELOROPLITES :: from DinoChecker's dinosaur archive".
›. Web access: 09th Sep 2026.
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