Globator bulloides Cragin, 1893
Plate: GaBu-10
Series: Lower Cretaceous Group: Washita Formation: Weno
Locale: Kent County: Culberson Stage: Albian
Length: 17.4 mm Width: 15.9 mm Height: 12.7 mm
Specimen in photo: NPL 83003 (Hypotype)
Repository: Non-vertebrate Paleo. Lab., Univ. of Texas
HOLOTYPE INFO:
Holotype: Geological Survey of Texas Collection (Cragin, 1893); likely housed at NPL (UT Austin).
Locality: Castle Mountains, Crane County, Texas (Cragin, 1893).
Stratigraphy: Exogyra texana beds (Fredericksburg Group) (Cragin, 1893).
SYNONYMY
Class: Echinoidea Leske, 1778
Subclass: Euechinoidea Bronn, 1860
Infraclass: Irregularia Latreille, 1825
Superorder: Echinoneidea Kroh & Smith, 2010
Order: Echinoneoida H. L. Clark, 1925
Family: Conulidae Lambert, 1911
Genus: GLOBATOR L. Agassiz, 1840
Species: Globator bulloides (Cragin, 1893)
TYPE SPECIES: Globator nucleus L. Agassiz, 1840
STRATIGRAPHICAL OCCURRENCE & DISTRIBUTION
Group: Washita ; Fredericksburg (Cragin, 1893)
Formations: Weno Formation ; Exogyra texana beds (Comanche Peak/Walnut equivalent) (Cragin, 1893)
Stratigraphic Units: Lower Cretaceous, Albian
Counties: Culberson ; Crane (Cragin, 1893)
DESCRIPTION
TOP: Length, width, height: 17.4 mm L × 15.9 mm W × 12.7 mm H ; Type: 15 mm L × 14.5 mm W × 12.5 mm H (Cragin, 1893)
Top shape: Spherical from above ; Rotund-ovate to broadly oval; broadest opposite anterior paired ambulacra (Cragin, 1893)
Top domed: Summit spherically arched (Cragin, 1893); Top slightly pointed
SIDE: Ambitus: About 45% from bottom
Side shape: Very globose; elevated, somewhat bullet-like; lateral walls high and subvertical (Cragin, 1893; Thompson, 2016)
BOTTOM: Bottom shape: Base small, flattened; taking up about 45% of bottom (Cragin, 1893)
AMB: Amb shape: Flush, narrow; come to point at apical disc; gently flexed (Cragin, 1893; Thompson, 2016)
Amb width: Widest at ambitus; narrow again by half at peristome . Paired ambulacra about half as broad as posterior paired interambulacral areas (Cragin, 1893).
INTERAMB: Interamb width: 2.5 times wider than ambulacra
TUBERCLES: Primary tubercles: Areolas sunken; numerous, but more so on bottom 2/3rds
APICAL SYSTEM: Size / Location: Central, small ; Compact (Cragin, 1893)
Plates: Plates irregular in size and shape; oculars as large as or larger than genitals (Cragin, 1893)
Genital pores: Posterior genital absent (4 pores) (Cragin, 1893)
Madreporite: Much larger than other genital plates; mainly central; sparingly perforate (Cragin, 1893)
PERIPROCT (ANUS): Shape & Size: Moderate size; ovate, pointed upward (Cragin, 1893)
Location: Located halfway below ambitus ; Placed about midway of the height of the test (Cragin, 1893)
PERISTOME (MOUTH): Size: Small; diameter takes up only 1/8th of diameter of test
Shape: Oval
Location: Nearly centrally placed (Cragin, 1893)
SPECIMENS STUDIED & CONDITION: Hypotype NPL 83003 .
ETYMOLOGY: From the Latin bulla ("bubble" or "knob") + -oides ("resembling"), referring to the bulbous, bullet-like shape.
REMARKS & COMPARISONS
Comparisons: Cragin (1893) noted this species was found associated with Pyrina parryi (Globator parryi) and Coenholectypus planatus, but distinguished it by its bullet-like, elevated shape.
Plate: GaBu-10
Series: Lower Cretaceous Group: Washita Formation: Weno
Locale: Kent County: Culberson Stage: Albian
Length: 17.4 mm Width: 15.9 mm Height: 12.7 mm
Specimen in photo: NPL 83003 (Hypotype)
Repository: Non-vertebrate Paleo. Lab., Univ. of Texas
HOLOTYPE INFO:
Holotype: Geological Survey of Texas Collection (Cragin, 1893); likely housed at NPL (UT Austin).
Locality: Castle Mountains, Crane County, Texas (Cragin, 1893).
Stratigraphy: Exogyra texana beds (Fredericksburg Group) (Cragin, 1893).
SYNONYMY
- Pyrina bulloides Cragin, 1893
Class: Echinoidea Leske, 1778
Subclass: Euechinoidea Bronn, 1860
Infraclass: Irregularia Latreille, 1825
Superorder: Echinoneidea Kroh & Smith, 2010
Order: Echinoneoida H. L. Clark, 1925
Family: Conulidae Lambert, 1911
Genus: GLOBATOR L. Agassiz, 1840
Species: Globator bulloides (Cragin, 1893)
TYPE SPECIES: Globator nucleus L. Agassiz, 1840
STRATIGRAPHICAL OCCURRENCE & DISTRIBUTION
Group: Washita ; Fredericksburg (Cragin, 1893)
Formations: Weno Formation ; Exogyra texana beds (Comanche Peak/Walnut equivalent) (Cragin, 1893)
Stratigraphic Units: Lower Cretaceous, Albian
Counties: Culberson ; Crane (Cragin, 1893)
DESCRIPTION
TOP: Length, width, height: 17.4 mm L × 15.9 mm W × 12.7 mm H ; Type: 15 mm L × 14.5 mm W × 12.5 mm H (Cragin, 1893)
Top shape: Spherical from above ; Rotund-ovate to broadly oval; broadest opposite anterior paired ambulacra (Cragin, 1893)
Top domed: Summit spherically arched (Cragin, 1893); Top slightly pointed
SIDE: Ambitus: About 45% from bottom
Side shape: Very globose; elevated, somewhat bullet-like; lateral walls high and subvertical (Cragin, 1893; Thompson, 2016)
BOTTOM: Bottom shape: Base small, flattened; taking up about 45% of bottom (Cragin, 1893)
AMB: Amb shape: Flush, narrow; come to point at apical disc; gently flexed (Cragin, 1893; Thompson, 2016)
Amb width: Widest at ambitus; narrow again by half at peristome . Paired ambulacra about half as broad as posterior paired interambulacral areas (Cragin, 1893).
INTERAMB: Interamb width: 2.5 times wider than ambulacra
TUBERCLES: Primary tubercles: Areolas sunken; numerous, but more so on bottom 2/3rds
APICAL SYSTEM: Size / Location: Central, small ; Compact (Cragin, 1893)
Plates: Plates irregular in size and shape; oculars as large as or larger than genitals (Cragin, 1893)
Genital pores: Posterior genital absent (4 pores) (Cragin, 1893)
Madreporite: Much larger than other genital plates; mainly central; sparingly perforate (Cragin, 1893)
PERIPROCT (ANUS): Shape & Size: Moderate size; ovate, pointed upward (Cragin, 1893)
Location: Located halfway below ambitus ; Placed about midway of the height of the test (Cragin, 1893)
PERISTOME (MOUTH): Size: Small; diameter takes up only 1/8th of diameter of test
Shape: Oval
Location: Nearly centrally placed (Cragin, 1893)
SPECIMENS STUDIED & CONDITION: Hypotype NPL 83003 .
ETYMOLOGY: From the Latin bulla ("bubble" or "knob") + -oides ("resembling"), referring to the bulbous, bullet-like shape.
REMARKS & COMPARISONS
Comparisons: Cragin (1893) noted this species was found associated with Pyrina parryi (Globator parryi) and Coenholectypus planatus, but distinguished it by its bullet-like, elevated shape.
