Fossil Menu

St. Louis Pennsylvanian Fossils of the Altamont Formation

Middle Pennsylvanian Series - Desmoinesian Stage
Marmaton Group - Altamont Formation

Fossil List   Recent Additions and Updates   Library

Phylum Porifera (sponges)
Phylum Cnidaria (corals)
Phylum Ectoprocta (bryozoans)
Phylum Brachiopoda (brachiopods)
Phylum Mollusca (
chitons, cephalopods, clams, gastropods, rostroconchs)
Phylum Arthropoda (trilobites)
Phylum Echinodermata (crinoids)
Phylum Chordata (sharks & bony fish - Tetrapod)
Trace Fossils

Click on pictures

Phylum Porifera (sponges)

Class Calcarea

Regispongia contorta (King) & spicule

Regispongia contorta (King)
attached to a crinoid column

Sponge holdfast

Phylum Cnidaria

Class Tabulata

Michelinia sp.

Phylum Ectoprocta (bryozoans)

Prismopora triquetra Hall 1883

Phylum Brachiopoda (brachiopods)

Class Inarticulata

Orbiculoidea missouriensis (Shumard, 1858)

Class Articulata

Composita subtilita (Hall, 1852)

Beecheria bovidens (Morton, 1836)

Derbyia crassa (Meek & Hayden, 1859)

Crurithyris planoconvexa (Shumard, 1855)

Hustedia mormoni (Marcou, 1858)

Kozlowskia haydenensis (Girty, 1903)

Kozlowskia splendens

Meekella striatocostata Cox

Useful Rules for Identification
Brachiopods and Bivalves

Phylum Mollusca

Class Polyplacophora (chitons)

chiton head valve
Glaphurochiton carbonarius (Stevens, 1858)

chiton intermediate valve
Glaphurochiton carbonarius (Stevens, 1858)

chiton tail valve
Glaphurochiton carbonarius (Stevens, 1858)

Class Cephalopoda (cephalopods)

Domatoceras sp.

Temnocheilus annulonodosus ?

Parametacoceras bellatulum Miller & Owen, 1934

Class Bivalvia (clams)

Astartella concentrica (Conrad, 1842)

Astartella varica McChesney, 1859

Nuculopsis girtyi

Parallelodon sp.

Useful Rules for Identification
Brachiopods and Bivalves

Class Gastropoda (gastropods - snails)

Amphiscapha reedsi

Jedria sp.

Jedria meeki (Knight, 1933)

Orthonema chorda

Platyceras (Orthonychia) parva

Pseudozygopleura scitula (2 cm)

Pseudozygopleura scitula (3 cm)

Shansiella carbonaria

Shansiella carbonaria (early juvenile)

Strobeus sp.

Strobeus sp.

Strobeus primigenius (Conrad, 1835)

Trachydomia nodosa (Meek & Worthen, 1861)

Trepospira depressa and Trepospira minima

Class Rostroconchia (rostroconchs)

Pseudobigalea crista Hoare et al., 1982

Pseudoconocardium sp.

Phylum Arthropoda

Class Trilobita

Ditomopyge scitula (enrolled)

Ditomopyge sp.

Phylum Echinodermata

Class Crinoidea

Arm plates of disparid inadunates crinoids

Ethelocrinus sp. (plates)

Phylum Chordata

Sharks and bony fish

dermal denticles (oscicles)

Petrodus sp. - dermal denticles

Shark Spines & Scales phosphatic nodules

Listracanthus sp.

Fish scale?

Assortment of unbroken nodules



Agassizodus sp.

Edestus sp.

Petalodus sp.


Tetrapod (rib fragment)


Stigmaria sp. - Lycopod root fragment

Trace Fossils

Borings and markings

Borings on crinoid columns

Unusual parasitic markings
on crinoid column

Worm tube constructions

Serpulid worm tubes on a bivalve

Predator borings on Inarticulate Brachiopod

Rooting traces

root molds

root molds

Distinguishing roots from burrows
Dr. Andrew K. Rindsberg

Some Useful Rules of Fossil Identification

Fossil Menu (top of page)

Site Menu

St. Louis Pennsylvanian Fossils of the Altamont Formation

Other Projects

Mississippian Fossils of Missouri

Other Fossils (USA and World Wide)

Carboniferous Fossils of Russia
Produced by: Barry Sutton, Alexander Davydov and Tom Yancey
This website is presented to showcase Carboniferous fossils of the
Moscow region of Russia; an area that is world famous for beautifully
preserved fossils.

Russia-USA joint venture Paleontology project
Language separates us ... Pictures bring us together
Alexander Davydov (Moscow, Russia)
Barry Sutton (St. Louis, Missouri - USA)

Paleontology and Geology of Missouri
Home Page

 Site Search Engine
search all projects

Barry Sutton ("That Guy on the Side of the Road")

Copyright © All rights reserved -
The pictures on this web site are the sole and
personal property of Barry Sutton.
Permission is granted to those wishing to use pictures
for educational purposes.

This web site is dedicated to my Dad.  He taught me to be
curious, research the unknown, network to find help or the
answers and never be embarrassed to say ... "I don't know."

Top of Page