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Propanoplosaurus marylandicus

Osteichthyes - Nodosauridae

Taxonomy
Propanoplosaurus marylandicus was named by Stanford et al. (2011). Its type specimen is USNM 540686, a partial skeleton, and it is a mold. Its type locality is Langley Park, which is in an Aptian fluvial-deltaic sandstone/claystone in the Patuxent Formation of Maryland. It is the type species of Propanoplosaurus.

Synonymy list
YearName and author
2011Propanoplosaurus marylandicus Stanford et al. p. 918 fig. 3–5
2015Propanoplosaurus marylandicus Weems and Bachman p. 214

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
subclassEureptilia()
RankNameAuthor
—Romeriida
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Ornithischia()
—Genasauria
—Thyreophora()
—Ankylosauria()
familyNodosauridae
genusPropanoplosaurus
speciesmarylandicus

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.

†Propanoplosaurus marylandicus Stanford et al. 2011
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Diagnosis
ReferenceDiagnosis
R. Stanford et al. 2011A nodosaurid ankylosaur that differs from all others, including Panoplosaurus mirus, in having a relatively narrow rostrum; a large, well-delimited, and more rostrally-placed
triangular ornamentation (from the maxillae?) on the dorsum of the skull; a shorter skull roof (and presumably shorter braincase, with the intersection of the frontoparietal joint and the midline more caudally placed; large, but undifferentiated circumorbital ornamentation.
Measurements
No measurements are available
Composition: hydroxyapatiteo
Entire body: yeso
Adult length: 10 to < 100o
Adult width: 1.0 to < 10o
Adult height: 1.0 to < 10o
Architecture: compact or denseo
Ontogeny: accretion, modification of partso
Grouping: gregariouso
Environment: terrestrialo
Locomotion: actively mobileo
Life habit: ground dwellingo
Diet: herbivoreo
Reproduction: oviparouso
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2004-12-14 12:50:52
Modified: 2004-12-14 14:50:52
Source: o = order
References: Kiessling 2004, Marsh 1875

Age range: Late/Upper Aptian or 119.57000 to 113.20000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Late/Upper Aptian119.57 - 113.2USA (Maryland) Propanoplosaurus marylandicus (type locality: 124206)