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Table 2 Description of ammonites in the “sculpture”

From: 3-D orientation and distribution of ammonites in a concretion from the Upper Cretaceous Pierre Shale of Montana

Study no.

AMNH no.

Species

Size (mm)

M/m

Description

Predation

Location of damage

Hollow phrag?

7A1

85445

crassus

58.3

m

Incomplete adult

?

Phrag + apt

Yes

7D1

85454

crassus

54.7

m

Incomplete adult

Yes

Puncture in phrag + apt

 

8A1

85450

crassus

97.9

M

Incomplete adult

Yes

Venter of shaft

Yes

8A2

85453

salt

78.0

M

Incomplete adult

?

Apt

?

8A3

85447

salt

53.9

M

Incomplete adult

Yes

Adoral bc

No

8A4/10A

85443

salt

64.9

M

Incomplete adult

?

Adoral bc

No

8A5

85449

salt

69.0

M

Incomplete adult

Yes

Adap bc + phrag

No

8A6

85446

crassus

58.0

m

Incomplete adult

Yes

Missing adoral bc

No

8A7

85452

salt

47.8

m

Incomplete adult

Yes

Adap bc

No

8A8

85451

plenus

41.0

?

Incomplete adult

Yes

bc

No

8A9

85448

?

16.8

?

Piece of phrag (juv?)

Yes

10A1

85444

crassus

104.5

 

Incomplete adult

Yes

Adap bc + apt

No

12B1

85482

plenus

23.3

?

Piece of bc (adult?)

?

bc

12C1

85481

plenus

42.7

?

Incomplete adult

Yes

bc

No

12C2

85483

crassus

12.6

?

Piece of phrag

?

Isolated piece

Yes

12C3

85479

crassus?

48.8

?

Incomplete adult

Yes

Along side

Yes

12D1

85480

salt

36.4

m

Incomplete adult

?

Apt

Yes

13A1

85455

crassus

107.0

M

Incomplete adult

Yes

Venter of bc

No

13A2

85456

?

17.5

Juvenile (broken in prep)

 

Yes

14A1

85461

crassus

113.0

M

Nearly complete adult

Yes

Venter of shaft

Yes

14A2

85458

salt

27.0

m?

Incomplete adult

Yes

Adap bc

Yes

14A4

85457

crassus

32.3

m

Incomplete adult

Yes

bc

No

14A5

85467

crassus

80.0

m

Complete adult

No

14A7

85468

?

11.7

?

Small part of phrag

?

?

No

16-1

85465

crassus

66.6

m

Incomplete adult

Yes

Side near apt

?

16-2

85463

crassus

54.5

m

Complete adult

No

16-3

85470

crassus

87.9

M

Incomplete adult

Yes

Phrag + adoral part of bc

No

16-4

85471

salt

41.1

m

Complete adult

  

No

16-5

85473

plenus

75.2

M

Incomplete adult

Yes

Venter of bc

Yes

16-6

85469

?

22.0

?

Small fragment of bc (juv?)

?

bc

16-7

85472

crassus

62.0

m

Incomplete adult

Yes

Part of phrag + both ends of bc

16-8

crassus

21.0 (exposed part)

?

Incomplete adult

Yes

Piece of bc

16-9

85464

plenus

35.0

?

Incomplete adult

?

Phrag + bc

  1. plenus = Hoploscaphites plenus, crassus = H. crassus, salt = H. saltgrassensis, adap = adapical, apt = aperture, bc = body chamber, juv = juvenile, phrag = phragmocone, prep = preparation, M = macroconch, m = microconch