PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Pantanellium brevispinum

Protozoa - Spumellaria - Pantanelliidae

Discussion

Named by Carter.

Original description: Cortical shell relatively large, spherical to subspherical with medium-sized pores and very low rounded nodes at pore frame vertices. Pore frames pentagonal and hexagonal, thicker in Z direction than in Y direction; five pore frames visible along AA, six visible along BB. Polarspines very short, less than one-quarter diameter of test; spines strongly tapering, one slightly longer than the other. Spines usually triradiate in axial section with three, narrow ridges and three relatively wide grooves.

Original remarks: Pantanellium brevispinum n. sp. differs from P. haidaense Pessagno & Blome by having much shorter polar spines, and lower nodes at pore frame vertices.

Etymology: From the Latin brevis spinus, -a, -um (with short spines).

Taxonomy

Pantanellium brevispinum was named by Gorican et al. (2006). Its type specimen is GSC 111730 and is a 3D body fossil. Its type locality is Rennell Junction, Graham Island; GSC loc. C-080611, which is in a Pliensbachian marine shale in the Ghost Creek Formation of Canada.

Sister species lacking formal opinion data

P. aduncum, P. baileyi, P. berriasium, P. buntonense, P. butonense, P. carpathicum, P. cumshewaense, P. darlingtonense, P. dawsoni, P. fishcreekensis, P. haidaense, P. huazalingoense, P. lanceola, P. latum, P. malheurense, P. moscowiense, P. oligoporus, P. rothwelli, P. suessi, P. tredecimporatum, P. ventosum, P. vigrassi, P. virgeum

Synonymy list

Year	Name and author
2006	Pantanellium brevispinum Gorican et al. p. 264 figs. Pl. PAN20

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Rank	Name	Author
—	Life
—	Eukaryota	()
class	Protozoa	Goldfuss 1820
subphylum	Sarcodina	Schmarda 1871
class	Reticularea	Lankester 1885
subclass	Radiolaria	(Müller 1858)

Rank	Name	Author
order	Spumellaria	Ehrenberg 1875
family	Pantanelliidae	Pessagno 1977
subfamily	Pantanelliinae	Pessagno 1977
genus	Pantanellium	Pessagno 1977
species	brevispinum

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

†Pantanellium brevispinum Gorican et al. 2006

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Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

silicap

Environment:

marinep

Locomotion:

passively mobilep

Life habit:

planktonicp

Diet:

omnivorep

Created:

2005-01-28 01:13:47

Modified:

2005-01-28 03:13:47

Source: p = phylum

Reference: Kiessling 1999

Age range: base of the Early/Lower Pliensbachian to the top of the Early/Lower Bajocian or 192.90000 to 168.60000 Ma

Collections (10 total)

Time interval	Ma	Country or state	Original ID and collection number
Early/Lower Pliensbachian	192.9 - 184.2	Canada (British Columbia)	Pantanellium brevispinum (119765 119770 119771 119773 119774 type locality: 119799 119800)
Early/Lower Aalenian - Middle Aalenian	174.7 - 170.9	Japan	Pantanellium sp. C (51711)
Late/Upper Aalenian	174.7 - 170.9	Japan	Pantanellium brevispinum (51712)
Early/Lower Bajocian	170.9 - 168.6	Japan	Pantanellium sp. C (51713)