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Carnassiform notches improve the functional efficiency of bat molar shearing crests

100%

Czaplewski N. J., Baker C. G.

Acta Palaeontologica Polonica

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2022

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tom 67

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nr 1

2

Ungulates of the middle Miocene Monarch Mill Formation, Churchill County, Nevada, USA

81%

Smith K. S., Czaplewski N. J., Coombs M. C.

Acta Palaeontologica Polonica

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2022

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tom 67

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nr 1

3

Molossid bats from the late Tertiary of Florida with a review of the Tertiary Molossidae of North America

81%

Czaplewski N. J., Morgan G. S., Naeher T.

Acta Chiropterologica

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2003

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tom 05

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nr 1

The fossil history of molossids in the North American Tertiary is among the poorest for any family of bats. The oldest definite record is of Wallia scalopidens of middle Eocene (Uintan) age from Saskatchewan, Canada. One of the youngest records is of Eumops cf. E. perotis from the late Pliocene (late early Blancan) of Arizona, USA. New occurrences detailed herein from the middle and late Tertiary of Florida, USA, begin to fill in the 40-million-year gap between the previous records. They are: (1) an abraded upper molar of an indeterminate genus from the Brooksville 2 locality, Hernando County, of late Oligocene (Arikareean) age; (2) a large and a small upper molar pertaining to two congeneric species similar to Tadarida and Mormopterus, from the Thomas Farm local fauna, Gilchrist County, of early Miocene (early Hemingfordian) age; and (3) a distal humerus from a Tadarida of an unknown species that is larger than extant Tadarida brasiliensis and similarly sized but differently proportioned than in the extinct Pleistocene species Tadarida constantinei. The last specimen is from the Macasphalt Shell Pit, Sarasota County, and is of late Pliocene (late Blancan) age.

4

A new genus of eomyid rodent from the Miocene of Nevada

80%

Smith K. S., Cifelli R. L., Czaplewski N. J.

Acta Palaeontologica Polonica

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2006

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tom 51

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nr 2

The description of a new genus (Apeomyoides) of eomyid rodent from the Miocene of Nevada increases the diversity of known taxa, enhances the geographic range, and extends the biochronology for the Apeomyinae (Eomyidae). Three groups of Eomyidae are known from the fossil record of North America. Of the three groups, Neogene taxa include four genera representing the Eomyinae and two genera representing the Apeomyinae; no genera of the subfamily Yoderimyinae are known from the Neogene of the continent. This diversity represents a significant reduction of eomyid taxa compared to the Paleogene, from which 17 genera of eomyines and three genera of yoderimyines are known. In Eurasia, 11 genera of eomyids occurred during the Neogene, with a few taxa that persisted until about 2 million years before present. At present, there are no known eomyids from the last 4.5 million years of the Neogene in North America. Apeomyoides savagei is referable to the subfamily Apeomyinae based on several key structures of the teeth and mandible. This new eomyid is part of the Eastgate local fauna, collected from volcanic ash deposits of the Monarch Mill Formation, Churchill County, Nevada. Apeomyoides has an occlusal pattern that shares characteristics of apeomyines from both North America (Megapeomys and Arikareeomys) and Eurasia (Apeomys and Megapeomys). The unique occlusal pattern and large size of Apeomyoides demonstrates that not all eomyids from North America were small or that their lineages decreased in size through time. Apeomyoides also may provide evidence, which challenges the hypothesis that eomyids within a single lineage from North America became more lophodont in geologically younger genera.

5

First fossil record of Amorphochilus schnablii (Chiroptera: Furipteridae), from the late Quaternary of Peru

80%

Morgan G. S., Czaplewski N. J.

Acta Chiropterologica

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1999

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tom 01

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nr 1

6

The paleoecology of the Late Miocene mammals from the Optima Local Fauna of Oklahoma, USA

61%

Frederickson J. A., Cohen J. E., Engel M. H., Hunt T. C., Wilbert G. A., Castaneda O. S., Czaplewski N. J.

Acta Palaeontologica Polonica

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2022

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tom 67

|

nr 1

Ograniczanie wyników

4 Acta Palaeontologica Polonica

2 Acta Chiropterologica

6 Czaplewski N. J.

2 Morgan G. S.

2 Smith K. S.

1 Baker C. G.

1 Castaneda O. S.

1 Cifelli R. L.

1 Cohen J. E.

1 Coombs M. C.

1 Engel M. H.

1 Frederickson J. A.

1 Hunt T. C.

1 Naeher T.

1 Wilbert G. A.

3 2022

1 2006

1 2003

1 1999

Carnassiform notches improve the functional efficiency of bat molar shearing crests

Ungulates of the middle Miocene Monarch Mill Formation, Churchill County, Nevada, USA

Molossid bats from the late Tertiary of Florida with a review of the Tertiary Molossidae of North America

A new genus of eomyid rodent from the Miocene of Nevada

First fossil record of Amorphochilus schnablii (Chiroptera: Furipteridae), from the late Quaternary of Peru

The paleoecology of the Late Miocene mammals from the Optima Local Fauna of Oklahoma, USA