The cretaceous birds of New JerseyOlson, Storrs L.
Science
The cretaceous birds of New Jersey
Olson, Storrs L.
Birds, Fossil; Paleontology -- Cretaceous; Paleontology -- New Jersey
[Illustration: Figure 8.--Distal end of right tibiotarsus of (_a,c,e_)
_Laornis edvardsianus_, holotype, YPM 820, compared with (_b,d,f_) the
same element enlarged in _Presbyornis_ sp., UW BQ305: _a,b_, anterior
views; _c,d_, lateral views (note large foramen in peroneus brevis
groove of _Laornis_); _e,f_, distal views. (_a,c,e_, × 1.5, _b,d,f_, ×
4; specimens coated with ammonium chloride to enhance detail.)]
=_Palaeotringa littoralis?_=
Figure 9_a_
Referred Material.--Distal portion of a left humerus, NJSM 11303.
Locality and Horizon.--Collected from the main fossiliferous layer of
the Inversand Company marl pit, Sewell, Gloucester County, New Jersey;
Hornerstown Formation, latest Cretaceous (Maastrichtian); collected 27
September 1972 by David C. Parris.
Measurements (in mm).--Distal width 12.8, depth through dorsal condyle
6.9, width of shaft at proximal extent of brachial fossa 8.2.
Comparisons.--This interesting specimen, although considerably worn,
clearly has the overall “graculavid” morphology but shows sufficient
differences from the humeri of _Telmatornis_ or _Anatalavis_ to warrant
its generic separation from them. In size it is about equal to the
modern form _Burhinus bistriatus vocifer_ and hence would be compatible
with _P. littoralis_. It differs from _Telmatornis_, _Anatalavis_, or
_Presbyornis_, and is more similar to _Burhinus_ in having (1) the
brachial depression wider, shallower, and more proximally situated.
Although affected by wear, (2) the dorsal condyle is nevertheless
considerably smaller and not produced as far proximally as in any of
the preceding genera, although _Presbyornis_ is more similar in this
respect than the others. In distal view the specimen is more similar
to _Presbyornis_ than to the other Cretaceous humeri, although (3) the
olecranal fossa is shallower. If this specimen is correctly referred
to _Palaeotringa_, it shows that genus to be distinct from any of the
others yet known in the fauna except possibly _Graculavus_, for which
the distal end of the humerus is unknown.
=_Palaeotringa vagans_ Marsh, 1872=
Figure 7_m_
_Palaeotringa vagans_ Marsh, 1872:365.
Holotype.--Fragmented distal two-thirds of a left tibiotarsus lacking
the external condyle and the anterior portion of the internal condyle,
YPM 835.
Locality and Horizon.--From Hornerstown, Upper Freehold Township,
Monmouth County, New Jersey; collected by J.G. Meirs; Late Cretaceous
(Maastrichtian), “about ten feet below the surface of the marl” (Marsh,
1872:365), either basal Hornerstown Formation or Navesink Formation.
Measurements (in mm).--Width of shaft just proximal to external condyle
5.8.
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