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 Title Page
 Frontispiece
 A new species of osteoborus from...
 Acknowledgement
 References






Group Title: Contributions to Florida vertebrate paleontology. Paper
Title: Contributions to Florida vertebrate paleontology
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Permanent Link: http://ufdc.ufl.edu/AM00000222/00001
 Material Information
Title: Contributions to Florida vertebrate paleontology
Series Title: Special publication
Physical Description: v. : ill. ; 23 cm.
Language: English
Creator: Florida Geological Survey
Publisher: Florida Geological Survey
Place of Publication: Tallahassee
Publication Date: 1956-
Frequency: completely irregular
 Subjects
Subject: Paleontology -- Florida   ( lcsh )
Vertebrates, Fossil   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
 Notes
Dates or Sequential Designation: No. 1-
 Record Information
Bibliographic ID: AM00000222
Volume ID: VID00001
Source Institution: Florida A&M University (FAMU)
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 09270575
lccn - a 56009592

Table of Contents
    Title Page
        Page i
    Frontispiece
        Page ii
    A new species of osteoborus from the bone valley formation of Florida
        Page 1
        Page 2
        Page 3
    Acknowledgement
        Page 4
    References
        Page 4
        Page 5
Full Text










STATE OF FLORIDA
STATE BOARD OF CONSERVATION
Ernest Mitts, Director


FLORIDA GEOLOGICAL SURVEY
Herman Gunter, Director



SPECIAL PUBLICATION NO.-2



CONTRIBUTIONS TO FLORIDA

VERTEBRATE PALEONTOLOGY




PAPER NO. 1



A NEW SPECIES OF OSTEOBORUS FROM

THE BONE VALLEY FORMATION OF FLORIDA



By

S. J. Olsen
Florida Geological Survey


Tallahassee, Florida
June, 1956
















FIG.2






FIG.3







64746

PLATE 1
FIG.lLabia/, FIG.2 occ/usal, and FIG.3 lingual viaws of
Ose oborus crassipineafusO/sen F. ..S NV5644xl









A NEW SPECIES OF OSTEOBORUS FROM


THE BONE VALLEY FORMATION OF FLORIDA

S. J. Olsen
Vertebrate Paleontologist
Florida Geological Survey

The phosphate pits of Florida have produced many inter-
esting and scientifically important vertebrate fossils in the
past and specimens recently acquired by the Florida Geolog-
ical Survey indicate that more new forms may indeed turn up
in the future from these mineral deposits.

Due to the methods employed inthe mining of phosphates,
it is only through the keen observations of the men engaged
in this work that any of the larger vertebrates are saved from
complete destruction by the mining machinery.

Although Dr. T. E. White described a borophagine skull
from the Bone Valley gravels, this is the first additional
material representing these carnivores that is complete
enough for a comparison to be made between it and other
related forms.

Family CANIDAE

Subfamily BOROPHAGINAE
Osteoborus crassapineatus n. sp.

Referred material. F.G.S. V-5644 (plate 1). Partial right
mandible lacking anterior portion of symphysis and
ascending ramus. C, P4-M1 present and alveolus of P3.

Horizon and locality. Bone Valley formation. Pit of the
American Agricultural Chemical Company, Pierce, Polk
County, Florida.

1 Investigations are underway to determine the exact age of
the Bone Valley formation but present indications place
this formation in the middle and upper Miocene. The re-
ferred specimen was collected with insufficient data to
pinpoint it stratigraphically, but because of its distribu-
tional importance it is worthy of recording.

64746







FLORIDA GEOLOGICAL SURVEY


Characters. A borophagine having the same characters in
P4 and M1 as those found in Osteoborus cyonoides, but a
larger form with a canine twice the size of the Pliocene
form from Texas.

Discussion. White erected a new genus for the borophagine
that he described from the same beds in which 0. crassa-
pineatus occurred. His description was based on'the char-
acters of the skull, all dentition except p3 being absent
(White 1941).

Among the unidentified specimens in the collections of
the Florida Geological Survey was a lower jaw of a canid;
although fragmentary, it is important enough to warrant
description. In view of the fact that enough of the lower den-
tition of this new form is present to definitely place it in the
genus Osteoborus, a re-examination and comparison of
Pliogulo may abolish this genus and place White's species in
the genus Osteoborus.

Description. The mandible of 0. crassapineatus when com-
pared with other members of this genus is more massive
and heavier in build than 0. cyonoides (U.C. Mus. Pal. 30663)
and more closely approaches 0. hilli in size (Johnston 1939).

0. validus has similar massive characteristics, but has
an overall size which is considerably larger. This form was
first described as a mutationbecause of the shorter and more
crowded premolar region, the reduction of the tubercular
teeth, and the slight enlargement of the carnassial (Matthew
and Cook 1909). Additional material of this carnivore was
collected from the Pliocene of Texas and described by C. S.
Johnston (1939).

The canine was not preserved in either of these speci-
mens, but the alveolus of the canine was preserved in the
Texas form, indicating a smaller tooth proportionally than
that which is present in 0. crassapineatus.

Although the anterior portion of the symphysial surface
has been restored, the root of the canine is in place, estab-
lishing its position in the jaw. The huge canine is completely
outside the observed ranges of variation for any sample of






CONTRIBUTIONS TO FLORIDA VERTEBRATE PALEONTOLOGY 3

borophagine dogs and may be just an anomalous individual
that would not be representative of the borophagine population
from the Bone Valley formation. Enough of the bottom of the
alveolus of the double rooted P3 is preserved to restore it
as indicated (pl. 1, fig. 2). The alveolus of P2 was restored
by comparing with that of 0. cyonoides. P4 is a subtrigonid
tooth with the principal cusp pitched backward. The heel is
a wide transverse crest having a posterior accessory cusp
which is small and close to the heel crest and tends to fuse
with it. These characters, along with the metaconid on M1,
which is present in the referred specimen, were listed as
being diagnostic for Borophagus cyonoides by Drs. Matthew
and Stirton (1930), but a further study of this material by
Stirton and Vanderhoof (1933) resulted in erecting the new
genus Osteoborus for these same specimens (Richey 1938).

CHART

Measurements (in millimeters) of Mandible and teeth


0. 0. 0.
cyonoides hill crassapineatus


Depth of jaw below P4

Width of jaw below P4

Depth of jaw below M1

Width of jaw below M1

Anteroposterior diameter P4

Transverse diameter P4

Anteroposterior diameter M1

Transverse diameter M1


27.5 34.9

16.7 18.7

31.6 36.4

16.7 18.2

16.5 19.0

11.0 12.8

27.7 30.0

12.7 12.0


A more thorough check of the phosphate pits of Polk
County, Florida, may in time yield more of this interesting
carnivore and help in establishing its phyletic position.


34.5

17.5

33.0

16.5

18.0

13.0

31.0

13.0







FLORIDA GEOLOGICAL SURVEY


ACKNOWLEDGMENTS

I am grateful to Dr. H. Gunter for his permission to
describe this specimen and to Dr. R.A. Stirton for the loan
of a specimen of 0. cyonoides for comparison. I also wish
to thank Dr. D.E. Savage for his helpful suggestions in pre-
paring this description.

The figure is the work of Andrew Janson, Scientific Illus-
trator of the Florida Geological Survey.

REFERENCES

Johnston, C. S.
1939 Preliminary report on the late middle Plio-
cene, Axtel locality, and the description of a
new member of the genus Osteoborus: Am.
Jour. Sci., vol. 237, pp. 895-898.

1939 A skull of Osteoborus validus from the early
middle Pliocene of Texas: Jour. Paleontology,
vol. 13, pp. 526-538.

Matthew, W. D.
1909 (and Cook, J. H.) A Pliocene fauna from
western Nebraska: Am. Mus. Nat. History
Bull., vol. 26, art. 27, pp. 361-414.


1930



Richey, K. A.
1938




Stirton, R. A.
1933


(and Stirton, R. A.) Osteology and affinities
of Borophagus: California Univ., Dept. Geol.
Sci., Bull., vol. 19, pp. 171-216.


Osteoborus diabloensis, a new dog from the
Black Hawk Ranch fauna, Mt. Diablo, Cali-
fornia: California Univ., Dept. Geol. Sci.,
Bull., vol. 24, pp. 303-308.


(and Vanderhoof, V. L.) Osteoborus, a new
genus of dogs, and its relations to Borophagus
Cope: California Univ., Dept. Geol. Sci., Bull.,
vol. 23, pp. 175-182.







FLORIDA GEOLOGICAL SURVEY


ACKNOWLEDGMENTS

I am grateful to Dr. H. Gunter for his permission to
describe this specimen and to Dr. R.A. Stirton for the loan
of a specimen of 0. cyonoides for comparison. I also wish
to thank Dr. D.E. Savage for his helpful suggestions in pre-
paring this description.

The figure is the work of Andrew Janson, Scientific Illus-
trator of the Florida Geological Survey.

REFERENCES

Johnston, C. S.
1939 Preliminary report on the late middle Plio-
cene, Axtel locality, and the description of a
new member of the genus Osteoborus: Am.
Jour. Sci., vol. 237, pp. 895-898.

1939 A skull of Osteoborus validus from the early
middle Pliocene of Texas: Jour. Paleontology,
vol. 13, pp. 526-538.

Matthew, W. D.
1909 (and Cook, J. H.) A Pliocene fauna from
western Nebraska: Am. Mus. Nat. History
Bull., vol. 26, art. 27, pp. 361-414.


1930



Richey, K. A.
1938




Stirton, R. A.
1933


(and Stirton, R. A.) Osteology and affinities
of Borophagus: California Univ., Dept. Geol.
Sci., Bull., vol. 19, pp. 171-216.


Osteoborus diabloensis, a new dog from the
Black Hawk Ranch fauna, Mt. Diablo, Cali-
fornia: California Univ., Dept. Geol. Sci.,
Bull., vol. 24, pp. 303-308.


(and Vanderhoof, V. L.) Osteoborus, a new
genus of dogs, and its relations to Borophagus
Cope: California Univ., Dept. Geol. Sci., Bull.,
vol. 23, pp. 175-182.







CONTRIBUTIONS TO FLORIDA VERTEBRATE PALEONTOLOGY 5


White, T. E.
1941


Additions to the fauna of the FloridaPliocene:
Proc. New England Zool. Club, vol. 18, pp. 67-
70.




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