منابع مشابه
Two new fossil flowers of magnoliid affinity from the Late Cretaceous of New Jersey.
Two taxa of cupulate magnoliid fossil flowers, Cronquistiflora and Detrusandra, are described from the Late Cretaceous (Turonian, ∼90 million years before present [MYBP]) Raritan (or lower Magothy) Formation of New Jersey. The fossil taxa are represented by flowers at various stages of development, associated fragments of cup-shaped floral receptacles with attached anthers, and isolated anthers...
متن کاملA formicine in New Jersey cretaceous amber (Hymenoptera: formicidae) and early evolution of the ants.
A worker ant preserved with microscopic detail has been discovered in Turonian-aged New Jersey amber [ca. 92 mega-annum (Ma)]. The apex of the gaster has an acidopore and, thus, allows definitive assignment of the fossil to the large extant subfamily Formicinae, members of which use a defensive spray of formic acid. This specimen is the only Cretaceous record of the subfamily, and only two othe...
متن کاملShell Color and Predation in the Cretaceous Oyster Pycnodonte Convexa from New Jersey
Original shell coloration, preserved as radial bands in a gryphaeid oyster species from the Upper Cretaceous Navesink Formation in New Jersey, record a history of predation attempts by durophagous predators through the life of the oyster. A majority of left valves of the oyster Pycnodonte convexa preserve original shell coloration in the form of reddish brown radial bands, similar to those repo...
متن کاملMetal concentrations in three species of passerine birds breeding in the Hackensack Meadowlands of New Jersey.
The New Jersey Meadowlands is an important natural area, a diverse mosaic of wetland habitats positioned within the heavily urbanized NY City Metropolitan area and the NY/NJ Harbor. Persistent contaminants may pose threats to wildlife inhabiting these habitats, affecting reproduction, egg hatchability, nestling survivorship, and neurobehavioral development. Metals of concern in the Meadowlands ...
متن کاملnew semigroup compactifications via the enveloping semigroups of associated flows
this thesis deals with the construction of some function algebras whose corresponding semigroup compactification are universal with respect to some properies of their enveloping semigroups. the special properties are of beigan a left zero, a left simple, a group, an inflation of the right zero, and an inflation of the rectangular band.
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ژورنال
عنوان ژورنال: Smithsonian Contributions to Paleobiology
سال: 1987
ISSN: 0081-0266
DOI: 10.5479/si.00810266.63.1