Crawfordsville Crinoids Fossils
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Crawfordsville Crinoid Fossils


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Also see: Crawfordsville Crinoid Site
 

Crawfordsville Indiana Crinoids
Camerate Crawfordsville Crinoid Association with Symbiotic Gastropod
Crinoids - Actinocrinites gibsoni (Family Actinocrinitidae), Macrocrinus mundulus pair (Family Batocrinidae), , Gastropod - Platyceras aequilateralis
Crawfordsville Crinoids Structure Study: Cyathocrinites iowensis (Family Cyathocrinidae - left) with Platycrinites saffordi stem (right); the stem served two main functions: (1) placing the crown into the water column to filter out food particles, and (2) anchoring the crinoid in the substrate
The example of Agaricocrinus americanus is exceptionally well preserved in very three-dimensional relief, showing the fine pinnulation needed to filter food from the water column
Example of the Camerate crinoid Macrocrinus mundulus (Family Batocrinidae) with preserved anal tube. This is another of the very 3-D preserved crinoids for which the Crawfordsville deposits are well known.
Well-preserved example of an Inadunate crinoid Pachylocrinus aequalis of Family Euspirocrinidae. This is a fine example of the variety of diverse crinoids to be found in the Crawfordsville deposits.
A fine example of an Inadunate Cladid crinoid (Family Scytalocrinidae) known as Parascytalocrinus validus from the famous Crawfordsville crinoid beds. Preservation on this specimen is remarkably complete, down to the fine pinnules on the arms.
Remarkably preserved Camerate crinoid from Family Staphylinocrinidae known as Abrotocrinus unicus from Crawfordsville. On the reverse is a section of the fenestrate bryozoan Archimedes.
A large example of the Camerate crinoid Platycrinites brevinodus (Family Platycrinitidae)
Four species - A museum quality example of an Inadunate Cladid crinoid (Family Scytalocrinidae) known as Histocrinus coreyi from the famous Crawfordsville crinoid beds showing over 200 mm of attached stem complete with attached cirri. Cirri found near the holdfast base were used as additional anchors in the sea floor. This spectacular crinoid is found in association with a fine Platycrinites hemisphericus (Camerate crinoid, Family Platycrinitidae) showing the characteristic spiral stem of the genus. The smallest crinoid is a Scytalocrinus robustus (Cladid, Family Scytalocrinidae). Preservation on this specimen is remarkably complete, down to the fine pinnules on the arms. They are found in association with a fragment of the coral Cladochonus beecheri. Crinoids like this could be found in association because their differing stem lengths allowed them each to feed in their own level of the water column.
A fine example of an Inadunate Cladid crinoid (Family Blothocrinidae) known as Ulrichicrinus coryphaeus from the famous Crawfordsville crinoid beds. It is in a fine state of preservation, with all the arms intact. It is well centered on its 120 mm by 70 mm siltstone matrix.
Inadunate crinoid Cyathocrinites multibrachiatus
Seven Species of Crawfordsville Crinoids
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Camerate crinoid Agaricrinus splendens
Museum quality specimen of Inadunate crinoid Cyathocrinites multibrachiatus
Museum-quality is probably an understatement for this crinoid plate from the famous Crawfordsville beds. It contains 8 crinoids across 7 distinct species, and all prepped by one of the best in the world. Among the seven species are representatives of Inadunate, Camerate and Flexible crinoids. The crinoid associations are an amazing example of the propensity of nature to fill all the niches in an environment.
Camerate crinoid Agaricrinus splendens with 55 mm crown
Flexible crinoid Taxicrinus colletti
Rare crinoid Sarocrinus varsourensis
Flexible crinoid Taxicrinus colletti with 10 mm crown
Onychocrinus exculptus with Parascytalocrinus validus
Rare crinoid Sarocrinus varsourensis with 18 mm crown and long, 50 mm stem
An uncommon Inadunate Cladid crinoid Catillocrinus-tennesseeae, of the Family Catillocrinidae. The generic name refers to the location where the first one was collected; crinoids of this taxon are found in Tennessee, Kentucky, Iowa, and Indiana.
Two examples of the Camerate crinoid Camptocrinus (Family Dichocrinidae) appearing much as they are thought to have been in life. They are believed to have lain at the sea floor curled much as you see them here, unrolling to filter feed when conditions were right.
Inadunate crinoid Parisocrinus labyrinthicus, Family Euspirocrinidae
Example of the Camerate crinoid Macrocrinus mundulus (Family Batocrinidae) that displays the elongated anal tube. This is another of the very 3-D preserved crinoids for which the Crawfordsville deposits are well known.
Well-preserved and immactulately prepared example of the Inadunate Cladid crinoid Barycrinus stellatus (Family Barycrinidae), Note the exceptional preservation in very three-dimensional relief.
Well-preserved and immactulately prepared example of a pair of Crawfordsville crinoids. The larger example is Agaricocrinus americanus (Family Coelocrinidae), while the smaller is a Parisocrinus crawfordsvillenesis (Family Euspirocinidae). Both crinoids show the fine pinnulation needed to filter their food from the water column.
Description: A well-preserved and meticulously prepared example of a pair of Inadunate Cladid crinoids. The larger example is Cyathocrinites harrodi (Family Cyathocrinitidae), while the smaller is a Parisocrinus crawfordsvillenesis (Family Euspirocinidae).
Scytalocrinus decadactylus
Inadunate Cladid crinoid Saccosomopsis insperatus
Forbesiocrinus multibrachiatus
A fine example of an Inadunate Cladid crinoid (Family Scytalocrinidae) known as Scytalocrinus decadactylus from the famous Crawfordsville crinoid beds. Preservation on this specimen is remarkably complete, down to the fine pinnules on the arms.
A fine example of an Inadunate Cladid crinoid (Family Cyathocrinidae) known as Saccosomopsis insperatus from the famous Crawfordsville crinoid beds. Preservation on this specimen is remarkably complete, down to the fine pinnules on the arms.
Forbesiocrinus multibrachiatus (Family Synerocrinidae)