NY67-7.7 (Ordovician of the United States)

Where: Montgomery County, New York (43.0° N, 74.3° W: paleocoordinates 31.7° S, 68.5° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Rossodus manitouensis conodont zone, Sprakers Member (Tribes Hill Formation), Tremadocian (485.4 - 477.7 Ma)

• bed-level stratigraphic resolution

Environment/lithology: peritidal; lithified, intraclastic grainstone

• Environment based on Landing et al 1996 (J of P 70:656-680), which is revised from Westrop et al 1993.
• "Medium- to thin-bedded, intraclast-fossil hash limestone and calcisiltite...In sections adjacent to major faults, the member is dolomitized and weathers buff or tan. Non-dolomitized sections weather light grey, and the limestones are medium to dark grey."

Size class: mesofossils

Collected by S. Westrop, L. Knox, E. Landing; reposited in the NYSM

Collection methods: chemical,

Primary reference: E. Landing, S. R. Westrop, and L. A. Knox. 1996. Conodonts, Stratigraphy, and Relative Sea-Level Changes of the Tribes Hill Formation (Lower Ordovician, East-Central New York). Journal of Paleontology 70(4):656-680 [M. Hopkins/M. Hopkins]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 174039: authorized by Melanie Hopkins, entered by Melanie Hopkins on 23.10.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

• The "Bellefontia Biofacies" of Westrop et al 1993 occurs in this member (includes the trilobites Bellefontia and Clelandia, and more rarely the the gastropods Ophilita, Bucanella, and Raphistomina rarely)
Show authors, comments, and common names
Conodonta
 Protopanderodontida - Oneotodontidae
Semiacontiodus iowensis
Semiacontiodus iowensis Fürnish 1938 conodont
 Protopanderodontida - Acanthodontidae
Acanthodus uncinatus, Scalpellodus longipinnatus
Acanthodus uncinatus Furnish 1938 conodont
 Protopanderodontida - Protopanderodontidae
Variabiloconus bassleri
Variabiloconus bassleri Furnish 1938 conodont
 Protopanderodontida - Drepanoistodontidae
Laurentoscandodus triangularis
Laurentoscandodus triangularis Furnish 1938 conodont
 Proconodontida - Cordylodontidae
Cordylodus angulatus
Cordylodus angulatus Pander 1856 conodont