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Biformites

Biformitidae

Discussion

Biformites is interpreted to be the imprints of arms of walking ophiuroids ( Bell, 2004 and Schlirf, 2012). Secondary successive branching refers to instances where the animal followed an earlier imprint for some distance (overlapping due to walking), giving the false impression of a branched imprint (D'Alessandro and Bromley, 1987).

Taxonomy
Biformites was named by Linck (1949). Its type is Biformites insolitus.

It was assigned to Ichnofossils by Hantzschel (1975); and to Biformitidae by Knaust and Neumann (2016).

Species
B. insolitus (type species), B. zhadaensis

Synonymy list
YearName and author
1949Biformites Linck
1975Biformites Hantzschel
2016Biformites Knaust and Neumann

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RankNameAuthor
—Ichnofossils
familyBiformitidae
RankNameAuthor
genusBiformitesLinck 1949

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.

G. †Biformites Linck 1949
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†Biformites insolitus Linck 1949
†Biformites zhadaensis Yang and Song 1985
Diagnosis
ReferenceDiagnosis
W. Hantzschel 1975Bimorphous form, consisting of narrow section, partly divided by longitudinal furrows, continuing into wider section with prominent transverse ribs; resembles shafted hand grenade; fillings visible at lower surface of layers.
D. Knaust and C. Neumann 2016Narrow, bedding-parallel, vermiform, hook-shaped or sinuous imprints with slightly tapering terminations, unbranched or with secondary successive branching, with or without ornament.
Measurements
No measurements are available
No ecological data are available
Collections
No collection or age range data are available