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Pardirallus lacustris

Osteichthyes - Gruiformes - Rallidae

Taxonomy
Porzana lacustris was named by Brodkorb (1958). Its type specimen is UMMP 33916, a limb element (right humerus), and it is a 3D body fossil. Its type locality is Hagerman west 1, which is in a Pliocene lacustrine - large horizon in the Hagerman Formation of Idaho.

It was recombined as Pardirallus lacustris by Olson (1977).

Synonymy list
YearName and author
1958Porzana lacustris Brodkorb p. 237 figs. Figure 1
1967Porzana lacustris Brodkorb p. 121
1977Pardirallus lacustris Olson p. 350

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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()
—Romeriida
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
RankNameAuthor
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Saurischia()
—Theropoda()
—Neotheropoda
—AverostraPaul 2002
—Tetanurae
—Coelurosauria()
—Maniraptora
—Paraves
classAves
subclassNeornithesGadow 1893
—Neognathae(Pycraft 1900)
—NeoavesSibley et al. 1988
—Terrestrornithes
—Telmatorae
superorderCharadriimorphaeHuxley 1867
orderGruiformesBonaparte 1854
familyRallidaeVigors 1825
genusPardirallusBonaparte 1856
specieslacustris()

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.

†Pardirallus lacustris Brodkorb 1958
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Diagnosis
ReferenceDiagnosis
P. Brodkorb 1958Differs from living Porzana carolina (Linnaeus), Porzana guti (Brodkorb, 1952), and Porzana auffenbergi Brodkorb (1954), the latter two both from the Illinoian stage of the Pleistocene of Florida, as follows: entepicondyle straighter, wider, not oming to a rounded point; ectepicondylar process more rounded and less produced; size larger. Distal width, 6.0; width of shaft, 2.7 mm.
Larger than Rallus prenticei Wetmore (1944) from the upper Pliocene of Kansas, besides differing in generic characters. The humerus of Porzana differs from that of Rallus in having the entepicondyle produced, with a notch separating it from the internal condyle; external condyle scarcely bent.
The new species is much smaller than other American fossil rails.
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: solitaryo
Environment: terrestrialo
Locomotion: actively mobileo
Life habit: ground dwellingo
Diet: carnivoresubo
Reproduction: oviparouso
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2009-01-03 20:39:15
Modified: 2009-01-03 22:39:15
Source: subo = suborder, o = order
References: Marsh 1875, Kiessling 2004, Benton 1983

Age range: Late/Upper Pliocene or 3.60000 to 2.58000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Late/Upper Pliocene3.6 - 2.58USA (Idaho) Porzana lacustris (type locality: 176409)